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What Is Congenital Heart Disease (CHD)?

For general awareness of CHO, one is required to know about the anatomy of the heart for practical purposes.

‘The heart is a four-chambered organ. The upper two (small) chambers are called auricles and the lower two (larger) are called ventricles. The auricles on each side are connected with their respective ventricles through an orifice/ opening, the left one is called mitral orifice and the right one is called tricuspid orifice. The orifices are guarded by valves (called the mitral valve and the tricuspid valve) so that blood flows in one direction only i.e. from auricles to ventricles, on each side.

The left side of the heart contains pure or oxygenated blood. After oxygenation, the blood comes from the lungs to the left upper chamber i.e. the left auricle through the pulmonary veins. From left auricle, the blood goes to the left ventricle through the mitral orifice, and from the left ventricle, the blood is pushed/pumped into the aorta (through the aortic orifice, guarded by The Aortic Valve) i.e. the main blood vessel which supplies blood to the entire body through its several branches.

From the body, the blood has to return to the heart for further oxygenation. This blood enters into the upper right chamber of the heart (right auricle), through superior vena cava which returns the blood from the upper half of the body and through the inferior vena cava, which returns the blood from the lower half of the body. The blood then goes to the right ventricle through the tricuspid orifice. The right ventricle further pushes the blood through the pulmonary orifice (guarded by Pulmonary Valve) into the pulmonary trunk, which divides into right and left pulmonary arteries for carrying the blood further to the right and left lung respectively, for oxygenation.

It is obvious from the above that the left side chambers contain oxygenated blood while the right side chambers contain impure blood. The right and left side chambers of the heart are not connected in any way, so that there is no mixing of pure and impure blood.

The main pulmonary artery/trunk which carries blood from right ventricle to the lungs for oxygenation may be involved. If this vessel is stenosed, called pulmonary Stenosis (PS), the whole blood from the right ventricle will not be able to go to the lungs for purification. This defect may be associated with a septal defect either between the two auricles called Atrial Septal Defect (ASD) or between the two ventricles called ventricular septal defect (VSD), or both, so that impure blood goes to the left side (as in such cases pressure is more in the chambers on the right side), i.e. into the left auricle or the left ventricle.

In this way, left side chambers of the heart instead of containing pure oxygenated blood, contain mixed blood i.e. both pure and impure blood. This mixed blood is supplied to the body through the aorta, so that the body instead of getting pure oxygenated blood, gets mixed blood, and hence each organ/tissue of the body suffers, and the child may be born. blue/ cyanosed, or becomes blue with a slight exertion.

If pulmonary stenosis (PS) is associated with VSD With resultant right ventricular hypertrophy (RVH), and the aorta also gets connected with the right ventricle (as a result of VSD), called dextroposition Of The Aorta (DA), the condition is called tetralogy of Fallot (PS, VSD, RVH, DA). And when tetralogy of Fallot is associated with ASD, the condition is called pentalogy of Fallot. In such cases the child is expected to be markedly blue (cyanosed) right from birth i.e. a blue baby may be born.

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M-Mode Measurement of the Left Ventricle

Artwork of heart in congestive heart failure Photo Mugs Heart failure. Cutaway illustration of a humanheart showing congestive ventricular heart failure. Blood vessels connecting the heart tothe rest of the body are at top. The bodys mainvein the vena cava is blue and main artery, the aorta is red. The ventricle at right hasan abnormally thick wall. This means that one sideof the heart will fail to empty itself, and hencepump blood effectively at each …

Col angiogram of an aneurysm of the left ventricle Photo Mugs Aneurysm. Coloured angiogram of an aneurysm, irregularly shaped deep orange area at lowercentre, seen distorting the left ventricle of theheart. Aneurysms are abnormal dilations which mostoften occur in arteries; they are caused by thepressure of blood flowing through a weakened area.The weakening may be due to disease, injury or acongenital defect. Aneurysms developing in theheart wall (here), ma…

Heart ventricle, SEM Photo Mugs Heart ventricle. Coloured scanning electron micrograph (SEM) of a section through the left ventricle wall (brown) of a healthy heart. Erythrocytes (red blood cells) are seen in the coronary blood vessels. The heart is a muscular organ that pumps blood around the body. The left ventricle is one of the lower chambers of the heart. It receives oxygenated blood from the lungs, via the left atrium (upp…

Photo Jigsaw Puzzle of Heart ventricle, SEM from Science Photo Library Photo Puzzle, Heart ventricle, SEM. Heart ventricle. Coloured scanning electron micrograph (SEM) of a section through the left ventricle wall (brown) of a healthy heart. Erythrocytes (red blood cells) are seen in the coronary blood vessels. The heart is a muscular organ that pumps blood around the body. The left ventricle is one of the lower chambers of the heart. It receives oxygenated blood from…

Photo Jigsaw Puzzle of Artwork of heart in congestive heart failure from Science Photo Library Photo Puzzle, Artwork of heart in congestive heart failure. Heart failure. Cutaway illustration of a humanheart showing congestive ventricular heart failure. Blood vessels connecting the heart tothe rest of the body are at top. The bodys mainvein the vena cava is blue and main artery, the aorta is red. The ventricle at right hasan abnormally thick wall. This means that one sideof the heart will fa…

Diastology: Clinical Approach to Diastolic Heart Failure, 1e $170.78 This reference thoroughly equips you to successfully diagnose and manage even the most complex incidences of diastolic heart failure and their comorbidities. It examines the basic mechanisms of this condition through discussions of both cellular and anatomic causes; guides you through non-invasive techniques for diagnosis, including echocardiography, cardiac CT, and MRI; and provides expert advice…

Left Ventricular Diastolic Dysfunction and Heart Failure $89.50 Aims to provide clinicians and researchers with an indepth understanding of the role of diastolic dysfunction in heart failure. The book provides a comprehensive overview of the diastolic properties of the left ventricle in health and disease. The editors incorporate pathophysiologic considerations and provide a broad yet detailed view of the clinical consequences of diastolic dysfunction. The boo…

Study of left ventricular function in man by echocardiography (Techniques in cardiovascular physiology) …

Left Ventricle $63.73 High Quality Content by WIKIPEDIA articles The left ventricle is one of four chambers (two atria and two ventricles) in the human heart. It receives oxygenated blood from the left atrium via the mitral valve, and pumps it into the aorta via the aortic valve. The left ventricle is longer and more conical in shape than the right, and on transverse section its concavity presents an oval or nearly circular outline. It forms a small part of the sternocostal surface and a considerable part of the diaphragmatic surface of the heart; it also forms the apex of the heart. The left ventricle is thicker and more muscular than the right ventricle because it pumps blood at a higher pressure. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 72 Publication Date: 2010/10/19 Language: English Dimensions: 9.02 x 5.98 x 0.17 inches

Ventricle (Heart) $71.7 High Quality Content by WIKIPEDIA articles In the heart, a ventricle is a one of two large and matched right and left chambers that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs. The Atria (an adjacent/upper heart chamber that is smaller than a ventricle) primes the Pump. Interventricular means between two or more ventricles (for example the interventricular septum), while intraventricular means within one ventricle (for example an intraventricular block). Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 76 Publication Date: 2010/09/23 Language: English Dimensions: 6.00 x 9.02 x 0.18 inches

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Cardiac Resynchronization Therapy and Implantable Cardiac Defibrillators in Left Ventricle Systolic Dysfunction $45.85 Original publisher: Rockville, Md.: Agency for Healthcare Research and Quality, 2007] OCLC Number: (OCoLC)154380830 Subject: Cardiac pacing. Excerpt: …Results Literature Search ( Figures 2 and 3 in Evidence Report ) 4-17 From 11,340 citations, we identified 14 RCTs ( 4,420 patients ) for the CRT efficacy 17-122 review, 106 studies for the CRT effectiveness review ( 9,209 patients from 2 controlled but non-randomized trials and 104 observational studies – 13 retrospective and 91 prospective ), and 4-17 89 studies for the CRT safety review, 2 clinical trials, and 73 observational 17,20,22,26,27,29-33,35,36,39,41,42,44-46,49,50,52,53,55-58,60,63-70,73,76,78,80,82,83,85-87,89,91-94,97,98,100,102-studies 106,108,109,111-113,117,118,123-132 ( 9,677 patients, 14 randomized trials, 2 controlled trials, and 73 11,133-143 observational studies – 10 retrospective and 63 prospective ). We identified 12 RCTs 144-191 ( 8,516 patients ) for the ICD efficacy review, 48 studies for the ICD effectiveness review ( 15,097 patients from 3 RCTs and 45 observational studies – 25 retrospective and 20 11,133-136,138-145,147,148,152,155-prospective ), and 49 studies for the ICD safety review, 159,161,162,164,165,169,171,176,178-181,184,186-189,191-202 ( 12,592 patients from 11 RCTs, 6 RCTs without efficacy outcomes, and 32 observational studies – 17 retrospective and 15 prospective ). An additional 12 studies ( 68,848 patients ) were included in our secondary analysis of peri-implant 203-safety with ICD for all patients ( i.e., not restricted to patients with LV systolic dysfunction ). 214 Description of Included Patients ( Tables 5, 7, 9, and 11 in Evidence Report ) CRT. All patients in the CRT studies had LV systolic dysfunction ( mean LVEF ranged from 21 to 30 percent ), prolonged QRS duration ( mean QRS ranged between 155 msec and 209 msec, with 64 percent of trial participants exhibiting a left bundle branch block ), and HF symptoms ( 79 percent were NYHA class III functional…

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The Right Ventricle $699.39 Author: Konstam, Marvin A./ Isner, Jeffrey M. Series Title: Developments in Nuclear Medicine Binding Type: Hardcover Number of Pages: 352 Publication Date: 1988/04/30 Language: English Dimensions: 10.00 x 7.01 x 0.81 inches

The Ventricle: Basic and Clinical Aspects $602.21 Author: Levine/ Levine, Herbert J./ Gaasch, William H. Binding Type: Hardcover Number of Pages: 368 Publication Date: 1985/09/30 Language: English Dimensions: 10.00 x 7.01 x 0.81 inches

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Left Atrium $63.73 High Quality Content by WIKIPEDIA articles The left atrium is one of the four chambers in the human heart. It receives oxygenated blood from the pulmonary veins, and pumps it into the left ventricle, via the atrioventricular valve. There is a foramen ovale (oval hole) between the right and left atrium in the fetus. After birth, this should close over and become the fossa ovale. If it does not, this is an atrial septal defect (hole in the heart). In the fetus, the right atrium pumps blood into the left atrium, bypassing the pulmonary circulation (which is useless in a fetus). In an adult, a septal defect would result in flow in the reverse direction from the left atrium to the right which will reduce cardiac output, potentially cause cardiac failure and in severe or untreated cases, death. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 72 Publication Date: 2010/10/19 Language: English Dimensions: 9.02 x 5.98 x 0.04 inches

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Preload (Cardiology) $68.51 High Quality Content by WIKIPEDIA articles In cardiac physiology, preload is the pressure stretching the ventricle of the heart, after passive filling of the ventricle and subsequent atrial contraction. If the chamber is not mentioned, it is usually assumed to be the left ventricle. Preload is theoretically most accurately described as the initial stretching of a single cardiac myocyte prior to contraction. This cannot be measured in vivo and therefore other measurements are used as estimates. Estimation is inaccurate, for example in a chronically dilated ventricle new sarcomeres may have formed in the heart muscle allowing the relaxed ventricle to appear enlarged. The term enddiastolic volume is better suited to the clinic, although not exactly equivalent to the laboratory term preload. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 96 Publication Date: 2010/07/10 Language: English Dimensions: 6.00 x 9.02 x 0.23 inches

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Human Heart $62.13 High Quality Content by WIKIPEDIA articles The human heart provides a continuous blood circulation through the cardiac cycle and is one of the most vital organs in the human body. It is divided into four chambers: the two upper chambers are called the left and right atria and two lower chambers are called the right and left bioatchventricles. Normally the right ventricle pumps the same blood amount into the lungs with each bit that the left ventricle pumps out. Physicians commonly refer to the right atrium and right ventricle together as the right heart and to the left atrium and ventricle as the left heart. The electric energy that stimulates the heart occurs in the sinoatrial node, which produces a definite potential and then discharges, sending an impulse across the atria. The Purkinje fibers transmit the electric charge to the myocardium while the cells of the atrial walls transmit it from cell to cell, making the atrial syncytium. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 68 Publication Date: 2010/09/23 Language: English Dimensions: 6.00 x 9.02 x 0.16 inches

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Aging Hearts and Arteries: A Scientific Quest $27.59 Original publisher: Washington, D.C.]: United States National Institutes of Health, National Institute on Aging, 2005] OCLC Number: (OCoLC)70247449 Subject: Heart — Aging. Excerpt: …4 5 Electrical impulse spreads to Ventricles contract, aortic ventricles via atrioventricular node valve opens, blood is ejected from the heart ( systole ) ventricle fills more slowly with blood, does this Why should early diastolic filling slow down as mean it has less blood pooled at the end of diastole people age? Could it be because the ventricle and thus less to send out to the body during the wall was not relaxing between heart beats as next contraction? The answer is no, and the reason quickly as it once had? was found in another of the adjustments that the This possibility intrigued NIA investigators heart makes with age. NIA investigators found because it fit neatly with another stray piece to the that the heart compensates for the slower early puzzle. In animal studies several years earlier, filling rate by filling more quickly in the late Dr. Lakatta had learned that rat hearts studied diastolic period. in the laboratory took longer to relax after a It happens like this: As the mitral valve slowly contraction when they were from older rats. closes, incoming blood from the lungs pools in the Later imaging studies in humans confirmed the left atrium, which is now larger and holds more animal studies: Between beats, the aging ventricle blood than when young. In the last moments of fills with blood more slowly because it is relaxing the diastole, the SA node – the heart’s pacemak-more slowly than it did when young. er – triggers the first electrical impulse ( the action potential ), which will lead to contraction. The But now another piece of the diastolic puzzle impulse spreads across the cells of the two atria. needed to be fit into place. If the older left Why should early diastolic filling slow down as people age? Could it be because the ventricle wall was not rel…

Ventricular Septal Defect $54.86 High Quality Content by WIKIPEDIA articles A VSD can be detected by cardiac auscultation. Classically, a VSD causes a pathognomonic holo or pansystolic murmur. Auscultation is generally considered sufficient for detecting a significant VSD. The murmur depends on the abnormal flow of blood from the left ventricle, through the VSD, to the right ventricle. If there is not much difference in pressure between the left and right ventricles, then the flow of blood through the VSD will not be very great and the VSD may be silent. This situation occurs a in the fetus when the right and left ventricular pressures are essentially equal, b for a short time after birth (before the right ventricular pressure has decreased, and c as a late complication of unrepaired VSD. Confirmation of cardiac auscultation can be obtained by noninvasive cardiac ultrasound echocardiography. To more accurately measure ventricular pressures, cardiac catheterization, can be performed. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 64 Publication Date: 2010/07/02 Language: English Dimensions: 5.98 x 9.01 x 0.15 inches

The Practice of Perioperative Transesophageal Echocardiography: Essential Cases $136.94 The Practice of Perioperative Transesophageal Echocardiography provides over 100 teaching cases ranging from the most common to the most challenging. Each case is succinctly presented in an easy-to-read question-answer, self-test format comprised of three printed pages of text and echo images. Echocardiography technique, interpretation, and case management are emphasized by internationally recognized experts in the field. The cases are organized to cover the gamut of clinical challenges faced by perioperative echocardiographers, including disorders of the aorta, left ventricle, and right ventricle, valvular heart disease, congenital heart lesions, catheter and device placement, and unsuspected masses and thrombi. Case challenges related to technical issues such as image optimization and artifacts are also addressed. The versatility of TEE is represented by 2-D, 3-D, color flow and spectral Doppler, tissue Doppler imaging, and quantitative assessments of volumes, pressures, and the severity of valvular pathologies. A companion website contains the fully searchable text plus echocardiographic video clips for each case presented in the book.

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A Clinical Treatise on Diseases of the Liver (Volume 3) $17.3 Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free.This is an OCR edition with typos.Excerpt from book:The lympnatic glands along the vertebral column and the mesenteric glands were not affected. There were a few exostoses on the bodies of the last dorsal and of the lumbar vertebrae. The dura mater was firmly adherent to the skull-cap, and thickened. There was a large quantity of serum beneath the arachnoid and in the ventricles. The ventricle of the septum lucidum was distended with serum, so as to form a bladder. There were a few cysts on the choroid plexus. At two places in the pia mater tumors were observed, of a dirty-gray color, similar to those in the left leg, and varying in size from a pea to a bean. The lymphatic glands in the neck were not enlarged. Grayish-white nodules, from the size of a hemp-seed to that of a hazel-nut, were disseminated through the lungs. Some of these nodules were situated immediately beneath the pleura; at other places there was a mass of grayish-white infiltration, an inch and a-half in diameter. The pericardium and heart were normal. The spleen was small, pale, and atrophied. The liver was somewhat enlarged, more especially in thickness. On its upper surface were observed an immense number of large and small tumors, which could be seen through the serous covering, and which felt like fluctuating abscesses. On cutting into the liver, round nodules were found, from half-an-inch to two and a-half inches in diameter, which were bounded externally by a capsule of connective tissue They presented a radiated structure, and enclosed round serous cysts from 3 to 11lines diameter, and filled with a bloody fluid. Some of the cysts were situated At the margin of the cancerous nodules. The hepatic parenchyma presented its normal reddish-brown appearance. Both lobes were implicated in the disease to the same extent. The gall-bladder was con…

Anatomie Des Herzens $14.14 Kapitel: Aorta, Herz, Sinusknoten, Systole, Atrioventrikularknoten, Mitralklappe, Herzmuskel, Koronargefäß, Erregungsleitungssystem, Herzklappe, Herzbeutel, Foramen Ovale, Endokard, His-Bündel, Bikuspidalität, Herzskelett, Internodalbündel, Trikuspidalklappe, Aortenklappe, Pulmonalklappe, Papillarmuskel, Herzohr, Epikard, Koronarvenensinus, Crista Aortae Ascendentis, Chordae Tendineae, Koch-Dreieck, Membrana Bronchopericardiaca, Herzkranzgefäß, Bikuspidalklappe. Aus Wikipedia. Nicht dargestellt. Auszug: The aorta (pronounced ; from Greek ?ορτ? – aorte, from ?ε?ρω – aeiro “I lift, raise”) is the largest artery in the body, originating from the left ventricle of the heart and extends down to the abdomen, where it branches off into two smaller arteries (the common iliacs). The aorta distributes oxygenated blood to all parts of the body through the systemic circulation. The aorta is usually divided into five segments/sections: All amniotes have a broadly similar arrangement to that of humans, albeit with a number of individual variations. In fish, however, there are two separate vessels referred to as aortas. The ventral aorta carries de-oxygenated blood from the heart to the gills; part of this vessel forms the ascending aorta in tetrapods (the remainder forms the pulmonary artery). A second, dorsal aorta carries oxygenated blood from the gills to the rest of the body, and is homologous with the descending aorta of tetrapods. The two aortas are connected by a number of vessels, one passing through each of the gills. Amphibians also retain the fifth connecting vessel, so that the aorta has two parallel arches. In mammalian and avian embryological development, the pharyngeal arch (aortic arches) arteries contribute to the normal pattern of the great arteries. The fourth aortic arch vessel survives in vertebrates as the arch of the aorta, the third aortic arch vessel persists as the

Anatomy Models Bundle Set $47.69 LRS1161: Students manipulate the inner workings of the human body as they build the models, gaining a deeper understanding of how organs and systems interact. Perfect for human body centers focusing on major organs or the circulatory, nervous or skeletal systems. Each realistically detailed plastic model includes a display stand and guide with facts and step by step, photo-illustrated assembly instructions. Features: -Includes all 4 models: heart, brain, human body and skeleton. -Realistically detailed plastic models. -Guide with facts. -Photo illustrated assembly instructions. -Set of 132 pieces. -Ages: 8 and up. Specifications: -Heart features superior vena cava, inferior vena cava, right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery, left atrium, mitral valve, left ventricle, aortic valve and aorta Opens when assembled so students can explore from the inside. This 29-Piece model measures 5 H when assembled.. -Brain features cerebellum, frontal lobe, parietal lobe, temporal lobe, occipital lobe, corpus callosum, brain stem, hippocampus, ventricles, insula, corpus striatum, internal capsule and lentiform nucleus. This 31-Piece model measures 3.75 H when assembled.. -Human Body features brain, skull, heart, rib cage, lungs, liver, stomach, pancreas, kidneys, small intestine, large intestine and spine. This 31-Piece torso model measures 4.5 H when assembled.. -Skeleton features skull, rib cage, humerus, spinal column, radius, ulna, hand, pelvis, femur, tibia, fibula, foot and partial circulatory system. This 41-Piece model measures 9.2 H when assembled.

Aortic Insufficiency $42.56 Used – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Aortic insufficiency also known as aortic regurgitation, is the leaking of the aortic valve of the heart that causes blood to flow in the reverse direction during ventricular diastole, from the aorta into the left ventricle.

Aortic Insufficiency $31 New – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Aortic insufficiency also known as aortic regurgitation, is the leaking of the aortic valve of the heart that causes blood to flow in the reverse direction during ventricular diastole, from the aorta into the left ventricle.

Aortic Insufficiency $31.55 Used – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Aortic insufficiency also known as aortic regurgitation, is the leaking of the aortic valve of the heart that causes blood to flow in the reverse direction during ventricular diastole, from the aorta into the left ventricle.

Aortic Insufficiency $31 Used – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Aortic insufficiency also known as aortic regurgitation, is the leaking of the aortic valve of the heart that causes blood to flow in the reverse direction during ventricular diastole, from the aorta into the left ventricle.

Aortic Insufficiency $42.54 Used – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Aortic insufficiency also known as aortic regurgitation, is the leaking of the aortic valve of the heart that causes blood to flow in the reverse direction during ventricular diastole, from the aorta into the left ventricle.

Aortic Insufficiency $42.56 New – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Aortic insufficiency also known as aortic regurgitation, is the leaking of the aortic valve of the heart that causes blood to flow in the reverse direction during ventricular diastole, from the aorta into the left ventricle.

Backscatter and attenuation characterization of ventricular myocardium. $69 This Dissertation presents quantitative ultrasonic measurements of the myocardium in fetal hearts and adult human hearts with the goal of studying the physics of sound waves incident upon anisotropic and inhomogeneous materials. Ultrasound has been used as a clinical tool to assess heart structure and function for several decades. The clinical usefulness of this noninvasive approach has grown with our understanding of the physical mechanisms underlying the interaction of ultrasonic waves with the myocardium.;In this Dissertation, integrated backscatter and attenuation analyses were performed on midgestational fetal hearts to assess potential differences in the left and right ventricular myocardium. The hearts were interrogated using a 50 MHz transducer that enabled finer spatial resolution than could be achieved at more typical clinical frequencies. Ultrasonic data analyses demonstrated different patterns and relative levels of backscatter and attenuation from the myocardium of the left ventricle and the right ventricle.;Ultrasonic data of adult human hearts were acquired with a clinical imaging system and quantified by their magnitude and time delay of cyclic variation of myocardial backscatter. The results were analyzing using Bayes Classification and ROC analysis to quantify potential advantages of using a combination of two features of cyclic variation of myocardial backscatter over using only one or the other feature to distinguish between groups of subjects. When the subjects were classified based on hemoglobin A1c, the homeostasis model assessment of insulin resistance, and the ratio of triglyceride to high-density lipoprotein-cholesterol, differences in the magnitude and normalized time delay of cyclic variation of myocardial backscatter were observed. The cyclic variation results also suggested a trend toward a larger area under the ROC curve when information from magnitude and time delay of cyclic variation is combined using Bayes classification than when

Cardiac Anatomy, Including: Coronary Circulation, Cardiac Pacemaker, Heart Valve, Aortic Valve, Mitral Valve, Pericardium, Left Ventricle, Left Atrium, Ventricle (Heart), Purkinje Fibers, Cardiac Muscle, Papillary Muscle, Human Heart, Sinoatrial Node $16.09 Used – Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge.

Cardiac Anatomy, Including: Coronary Circulation, Cardiac Pacemaker, Heart Valve, Aortic Valve, Mitral Valve, Pericardium, Left Ventricle, Left Atrium, Ventricle (Heart), Purkinje Fibers, Cardiac Muscle, Papillary Muscle, Human Heart, Sinoatrial Node $18.27 Used – Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge.

Cardiac Anatomy, Including: Coronary Circulation, Cardiac Pacemaker, Heart Valve, Aortic Valve, Mitral Valve, Pericardium, Left Ventricle, Left Atrium, Ventricle (Heart), Purkinje Fibers, Cardiac Muscle, Papillary Muscle, Human Heart, Sinoatrial Node $18.27 Used – Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge.

Cardiac Anatomy, Including: Coronary Circulation, Cardiac Pacemaker, Heart Valve, Aortic Valve, Mitral Valve, Pericardium, Left Ventricle, Left Atrium, Ventricle (Heart), Purkinje Fibers, Cardiac Muscle, Papillary Muscle, Human Heart, Sinoatrial Node $16.09 Used – Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge.

Cardiac Resynchronization Therapy and Implantable Cardiac Defibrillators in Left Ventricle Systolic Dysfunction $42.53 New – Original publisher: [Rockville, Md.: Agency for Healthcare Research and Quality, 2007] OCLC Number: (OCoLC)154380830 Subject: Cardiac pacing. Excerpt: …Results Literature Search ( Figures 2 and 3 in Evidence Report ) 4-17 From 11,340 citations, we identified 14 RCTs ( 4,420 patients ) for the CRT efficacy 17-122 review, 106 studies for the CRT effectiveness review ( 9,209 patients from 2 controlled but non-randomized trials and 104 observational studies – 13 retrospective and 91 prospect

Cardiac Resynchronization Therapy and Implantable Cardiac Defibrillators in Left Ventricle Systolic Dysfunction $28.61 Used – Original publisher: [Rockville, Md.: Agency for Healthcare Research and Quality, 2007] OCLC Number: (OCoLC)154380830 Subject: Cardiac pacing. Excerpt: …Results Literature Search ( Figures 2 and 3 in Evidence Report ) 4-17 From 11,340 citations, we identified 14 RCTs ( 4,420 patients ) for the CRT efficacy 17-122 review, 106 studies for the CRT effectiveness review ( 9,209 patients from 2 controlled but non-randomized trials and 104 observational studies – 13 retrospective and 91 prospec

Cardiac Resynchronization Therapy and Implantable Cardiac Defibrillators in Left Ventricle Systolic Dysfunction $42.53 Used – Original publisher: [Rockville, Md.: Agency for Healthcare Research and Quality, 2007] OCLC Number: (OCoLC)154380830 Subject: Cardiac pacing. Excerpt: …Results Literature Search ( Figures 2 and 3 in Evidence Report ) 4-17 From 11,340 citations, we identified 14 RCTs ( 4,420 patients ) for the CRT efficacy 17-122 review, 106 studies for the CRT effectiveness review ( 9,209 patients from 2 controlled but non-randomized trials and 104 observational studies – 13 retrospective and 91 prospec

Cardiac Resynchronization Therapy and Implantable Cardiac Defibrillators in Left Ventricle Systolic Dysfunction $28.61 New – Original publisher: [Rockville, Md.: Agency for Healthcare Research and Quality, 2007] OCLC Number: (OCoLC)154380830 Subject: Cardiac pacing. Excerpt: …Results Literature Search ( Figures 2 and 3 in Evidence Report ) 4-17 From 11,340 citations, we identified 14 RCTs ( 4,420 patients ) for the CRT efficacy 17-122 review, 106 studies for the CRT effectiveness review ( 9,209 patients from 2 controlled but non-randomized trials and 104 observational studies – 13 retrospective and 91 prospect

Cardiac activation mapping using Ultrasound Current Source Density Imaging. $49.99 Intracardiac ablation procedures to correct drug-resistant arrhythmias require accurate maps of cardiac activation. Conventional methods are time-consuming and have poor spatial resolution (5-10 mm). The goal of this dissertation was to develop a new method, Ultrasound Current Source Density Imaging (UCSDI), to map biological currents. UCSDI is based on the acousto-electric (AE) effect, a modulation of the electric resistivity by acoustic pressure. If a current passes through the focal region of an ultrasound transducer, a voltage modulated at the ultrasonic frequency can be measured with a pair of electrodes located distal to the focal zone. By sweeping the focal zone, UCSDI can map a distributed current field. UCSDI has several potential advantages as a technique for mapping cardiac activation currents: high spatial resolution determined by the typically sub-mm focal characteristics of the ultrasound beam, short mapping time using electronically steered ultrasonic beams, and automatic registration with B-mode ultrasound images without sophisticated mathematical algorithms. UCSDI was first validated by mapping an artificially generated 2D current distribution. It was compared to sequential electrode mapping, computer simulation as well as to an inverse algorithm. In this study it was possible to use UCSDI to locate monopolar current sources to within 1-mm of their true locations without making any prior assumptions about the source geometry. UCSDI was then used to detect and map biological currents in an isolated rabbit heart. Both UCSDI and normal low frequency electrocardiograms (ECG) were measured simultaneously by tungsten electrodes embedded in the left ventricle. The motion of the heart was significantly reduced by perfusing it with an excitation contraction de-coupler. Measured UCSDI maps showed temporal and spatial patterns consistent with a spreading activation wave and timing consistent with normal ECG signals. UCSDI was then combined with ultrasonic

Cardiac activation mapping using Ultrasound Current Source Density Imaging. $49.99 Intracardiac ablation procedures to correct drug-resistant arrhythmias require accurate maps of cardiac activation. Conventional methods are time-consuming and have poor spatial resolution (5-10 mm). The goal of this dissertation was to develop a new method, Ultrasound Current Source Density Imaging (UCSDI), to map biological currents. UCSDI is based on the acousto-electric (AE) effect, a modulation of the electric resistivity by acoustic pressure. If a current passes through the focal region of an ultrasound transducer, a voltage modulated at the ultrasonic frequency can be measured with a pair of electrodes located distal to the focal zone. By sweeping the focal zone, UCSDI can map a distributed current field. UCSDI has several potential advantages as a technique for mapping cardiac activation currents: high spatial resolution determined by the typically sub-mm focal characteristics of the ultrasound beam, short mapping time using electronically steered ultrasonic beams, and automatic registration with B-mode ultrasound images without sophisticated mathematical algorithms. UCSDI was first validated by mapping an artificially generated 2D current distribution. It was compared to sequential electrode mapping, computer simulation as well as to an inverse algorithm. In this study it was possible to use UCSDI to locate monopolar current sources to within 1-mm of their true locations without making any prior assumptions about the source geometry. UCSDI was then used to detect and map biological currents in an isolated rabbit heart. Both UCSDI and normal low frequency electrocardiograms (ECG) were measured simultaneously by tungsten electrodes embedded in the left ventricle. The motion of the heart was significantly reduced by perfusing it with an excitation contraction de-coupler. Measured UCSDI maps showed temporal and spatial patterns consistent with a spreading activation wave and timing consistent with normal ECG signals. UCSDI was then combined with ultrasonic

Complications of Myocardial Infarction: Clinical Diagnostic Imaging Atlas $189.95 1.2 million myocardial infarctions occurred last year in the U.S., and 480,000 patients died following complications of infarction. Now, you can detect and treat the many complications associated with myocardial infarction in time to save many more patients. This title in the brand-new Clinical Diagnostic Imaging Atlas Series offers you authoritative guidance from a well-known cardiologist and imaging expert about when and how to perform the latest diagnostic imaging tests, interpret the results, and effectively treat the emergency. Detailed discussions of hot topics, full-color illustrations, and a DVD of procedural video clips, animations, and downloadable image libraries help you provide fast, appropriate treatment for each challenging case you face.• Offers detailed advice on when and how to screen for the most prevalent but often difficult-to-diagnose complications of myocardial infarction to help you improve care and increase survival rates.• Discusses the hottest topics in myocardial infarction, including cardiogenic shock • left ventricle remodeling • thrombi • right ventricle infarction • free wall rupture • false aneurysms • tamponade • ventricular septal rupture • papillary muscle rupture • and more that prepare you to better diagnose and manage whatever you see.• Presents 70 fully illustrated case presentations with teaching points that make information easy to understand and digest.• Addresses the advantages and limitations of chest radiology, transthoracic and transesophageal echocardiography, cardiac CT, MR, angiography, and nuclear cardiology techniques so you can quickly determine the best imaging approach.• Includes supporting evidence and current AHA/ACC guidelines for more accurate interpretations of your imaging findings.• Uses a consistent, easy-to-follow chapter format that includes topic overview, an outline of imaging/diagnostic options, and

Complications of Myocardial Infarction: Clinical Diagnostic Imaging Atlas with DVD $92.36 1.2 million myocardial infarctions occurred last year in the U.S., and 480,000 patients died following complications of infarction. Now, you can detect and treat the many complications associated with myocardial infarction in time to save many more patients. This title in the brand-new Clinical Diagnostic Imaging Atlas Series offers you authoritative guidance from a well-known cardiologist and imaging expert about when and how to perform the latest diagnostic imaging tests, interpret the results, and effectively treat the emergency. Detailed discussions of hot topics, full-color illustrations, and a DVD of procedural video clips, animations, and downloadable image libraries help you provide fast, appropriate treatment for each challenging case you face.Offers detailed advice on when and how to screen for the most prevalent but often difficult-to-diagnose complications of myocardial infarction to help you improve care and increase survival rates. Discusses the hottest topics in myocardial infarction, including cardiogenic shock • left ventricle remodeling • thrombi • right ventricle infarction • free wall rupture • false aneurysms • tamponade • ventricular septal rupture • papillary muscle rupture • and more that prepare you to better diagnose and manage whatever you see. Presents 70 fully illustrated case presentations with teaching points that make information easy to understand and digest.Addresses the advantages and limitations of chest radiology, transthoracic and transesophageal echocardiography, cardiac CT, MR, angiography, and nuclear cardiology techniques so you can quickly determine the best imaging approach.Includes supporting evidence and current AHA/ACC guidelines for more accurate interpretations of your imaging findings.Uses a consistent, easy-to-follow chapter format that includes topic overview, an outline of imaging/diagnostic

Diseases Of The Kidneys And Nervous System $26.85 Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free.This is an OCR edition with typos.Excerpt from book:CHRONIC INTERSTITIAL NEPHRITIS. Synonyms.—Contracted, Gouty, Red Granular Kidney and Cirrhosis of the Kidney. Definition.—This is a process of fibrosis usually associated with diffused arterio-sclerosis and a parenchy- matous degeneration that results in a contraction of the size of the kidney. Etiology.—It may be the result of irritants conveyed through the blood. It may follow syphilis, gout, arterio-sclerosis, chronic plumbumism, uric acid, prolonged passive congestion, heart lesions, infectious diseases, scarlatina, malaria and rheumatism. It is a constant feature in old age, and may occur during middle life. It is associated with the sclerosis of other organs. Pathology.—This is a hyperplasia of the connective tissue of the organ that results in compression of the tubules. This results in a decrease in the size of the kidney which may be very much contracted. It is red and granular, with atrophy of the cortex and an adherent capsule. The microscope shows bands of inter- tubular connective tissue. As this contracts, the tubules are in part obliterated, while other portions are dilated. A general arterio-sclerosis and hypertrophy of the heart are constantly associated. Symptoms.—While a disease of middle and advanced life, it may be met with during childhood. Its advent is insidious, but should be looked for in thosewho are hearty eaters and have a high arterial tension. Digestive disturbances and high arterial tension are about the first symptoms to be noted. With these there gradually develops hypertrophy of the left ventricle with an accentuation of the second aortic sound. About this period a slight edema appears about the ankles and under the eyes. Uremia is soon indicated either by headache, drowsiness, vertigo or coma. A dimness of vision

Double Outlet Right Ventricle $25.84 Used – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Double outlet right ventricle (DORV) is a form of congenital heart disease where both of the great arteries connect (in whole or in part) to the right ventricle (RV). In some cases it is found that this occurs on the left side of the heart rather than the right side.DORV occurs in a multiple forms, with variability of great artery position and size, as well as of

Double Outlet Right Ventricle $44.4 New – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Double outlet right ventricle (DORV) is a form of congenital heart disease where both of the great arteries connect (in whole or in part) to the right ventricle (RV). In some cases it is found that this occurs on the left side of the heart rather than the right side.DORV occurs in a multiple forms, with variability of great artery position and size, as well as of

Double Outlet Right Ventricle $44.4 Used – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Double outlet right ventricle (DORV) is a form of congenital heart disease where both of the great arteries connect (in whole or in part) to the right ventricle (RV). In some cases it is found that this occurs on the left side of the heart rather than the right side.DORV occurs in a multiple forms, with variability of great artery position and size, as well as of

Double Outlet Right Ventricle $25.84 New – Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Double outlet right ventricle (DORV) is a form of congenital heart disease where both of the great arteries connect (in whole or in part) to the right ventricle (RV). In some cases it is found that this occurs on the left side of the heart rather than the right side.DORV occurs in a multiple forms, with variability of great artery position and size, as well as of

Faces of Right Ventricular Failure, an Issue of Cardiology Clinics $61.9 New – Although heart failure typically begins with the left side of the heart, it is also important for cardiologists to understand right-sided heart failure, which is the inability of the right side of the heart to adequately pump venous blood into the pulmonary circulation. Right heart failure causes a back-up of fluid in the body, resulting in swelling and edema. This issue covers the normal right ventricle (RV), imaging of the RV, RV failure in a variety of settings, and tratmen tof RV failu

Faces of Right Ventricular Failure, an Issue of Cardiology Clinics $103.53 Used – Although heart failure typically begins with the left side of the heart, it is also important for cardiologists to understand right-sided heart failure, which is the inability of the right side of the heart to adequately pump venous blood into the pulmonary circulation. Right heart failure causes a back-up of fluid in the body, resulting in swelling and edema. This issue covers the normal right ventricle (RV), imaging of the RV, RV failure in a variety of settings, and tratmen tof RV fail

Faces of Right Ventricular Failure, an Issue of Cardiology Clinics $61.9 Used – Although heart failure typically begins with the left side of the heart, it is also important for cardiologists to understand right-sided heart failure, which is the inability of the right side of the heart to adequately pump venous blood into the pulmonary circulation. Right heart failure causes a back-up of fluid in the body, resulting in swelling and edema. This issue covers the normal right ventricle (RV), imaging of the RV, RV failure in a variety of settings, and tratmen tof RV fail