Left ventricular mass index measured by quantitative gated
... measuring left ventricular mass in clinical practice, but it samples only a diastolic dimension measured by the Mmode of a long-axis view of the left ventricle and may be inaccurate in some myocardial infarction patients because of deformity of the cardiac chamber. Good-quality echocardiograhic reco ...
... measuring left ventricular mass in clinical practice, but it samples only a diastolic dimension measured by the Mmode of a long-axis view of the left ventricle and may be inaccurate in some myocardial infarction patients because of deformity of the cardiac chamber. Good-quality echocardiograhic reco ...
Ejection Fraction by Radionuclide Angiocardiography
... collimator, sinusoidal time-activity curves with frequencies from 1 to 6 cycles/sec (60-360 "beats" per minute) were obtained and analyzed. The importance of assigning proper LV and background regions-of-interest was examined in a group of six patients in the following manner. Ejection fractions wer ...
... collimator, sinusoidal time-activity curves with frequencies from 1 to 6 cycles/sec (60-360 "beats" per minute) were obtained and analyzed. The importance of assigning proper LV and background regions-of-interest was examined in a group of six patients in the following manner. Ejection fractions wer ...
2012 Inova Children’s Hospital Cardiac Outcomes
... of congenital heart treatment, the adult congenital heart disease program has become a major focus of the Inova Heart and Vascular Institute. We believe it is critical that the care of these patients transition to adult care while continuing to be treated by experts in congenital heart disease. At t ...
... of congenital heart treatment, the adult congenital heart disease program has become a major focus of the Inova Heart and Vascular Institute. We believe it is critical that the care of these patients transition to adult care while continuing to be treated by experts in congenital heart disease. At t ...
Permanent Pacemaker
... AAI means the pacemaker paces and senses in the atrium and inhibits atrial pacing upon sensing an intrinsic atrial event. VVI means the pacemaker paces and senses in the ventricle and will inhibit ventricular pacing upon sensing a ventricular event. DDD means pacing and sensing occur in the at ...
... AAI means the pacemaker paces and senses in the atrium and inhibits atrial pacing upon sensing an intrinsic atrial event. VVI means the pacemaker paces and senses in the ventricle and will inhibit ventricular pacing upon sensing a ventricular event. DDD means pacing and sensing occur in the at ...
EXPERIMENTAL ANALYSIS INTO THE MAIN ARTERY OF 2
... Regarding to the report from World Health Organization (WHO), the most killer disease throughout the world is cardiovascular disease. There are millions of people deaths because of this disease every year. So, it is important to study the blood pumping mechanism in human body and what is the reason ...
... Regarding to the report from World Health Organization (WHO), the most killer disease throughout the world is cardiovascular disease. There are millions of people deaths because of this disease every year. So, it is important to study the blood pumping mechanism in human body and what is the reason ...
Hybrid management of a large atrial septal defect and a patent
... at the base of the right atrial appendage. This location was chosen as the entry site after we made sure it would provide the straightest wire course toward the left atrium by pushing the right atrial wall with the index finger tip in various locations and assessing the angle by TEE. The ASD was the ...
... at the base of the right atrial appendage. This location was chosen as the entry site after we made sure it would provide the straightest wire course toward the left atrium by pushing the right atrial wall with the index finger tip in various locations and assessing the angle by TEE. The ASD was the ...
full articles - pdf - People`s Journal Of Scientific Research
... diverticulum of the ventricle are the most commonly encountered heart lesions (Amato et al, 1995; Leca et al, 1989). The severity and the complexity of the intracardiac defect contribute largely to the poor prognosis associated with this malformation(Amato et al, 1995). It has been also observed tha ...
... diverticulum of the ventricle are the most commonly encountered heart lesions (Amato et al, 1995; Leca et al, 1989). The severity and the complexity of the intracardiac defect contribute largely to the poor prognosis associated with this malformation(Amato et al, 1995). It has been also observed tha ...
Right ventricular failure in congenital heart disease
... right ventricle can be evaluated using several imaging and functional modalities2,18). In clinical practice, echocardiography is the mainstay for evaluating the RV structure and function18). Compared with other modalities, it is versatile and available at all institutes18). In addition, Doppler-deri ...
... right ventricle can be evaluated using several imaging and functional modalities2,18). In clinical practice, echocardiography is the mainstay for evaluating the RV structure and function18). Compared with other modalities, it is versatile and available at all institutes18). In addition, Doppler-deri ...
Early origins of heart disease: Low birth weight and the... the insulin-like gro wth factor system in cardiac hypertrophy
... absolute heart weight is reduced compared to normally grown fetuses. In late gestation, IUGR sheep fetuses also have a reduction in cardiomyocyte proliferation50 and a higher percentage of mononucleated cardiomyocytes,49-51 indicating a delay in cardiomyocyte binucleation and maturation. Furthermore ...
... absolute heart weight is reduced compared to normally grown fetuses. In late gestation, IUGR sheep fetuses also have a reduction in cardiomyocyte proliferation50 and a higher percentage of mononucleated cardiomyocytes,49-51 indicating a delay in cardiomyocyte binucleation and maturation. Furthermore ...
Syncope And Atrial Fibrillation - Journal of Atrial Fibrillation
... shorten with slowing of the heart rate. This paradoxical finding linked with an increase in atrial dispersion of refractoriness is the mechanism for vagal induction of atrial fibrillation.10 The patient population of vagal induced atrial fibrillation favors men over women (ratio 4:1) usually between ...
... shorten with slowing of the heart rate. This paradoxical finding linked with an increase in atrial dispersion of refractoriness is the mechanism for vagal induction of atrial fibrillation.10 The patient population of vagal induced atrial fibrillation favors men over women (ratio 4:1) usually between ...
- David Winston, RH
... Cardiovascular diseases (CVD) are the leading cause of death in the U.S. and developed countries. The CDC reports that in 2007 there were 616,067 deaths caused by heart problems and that many, if not most, were preventable. According to the WHO, the major CVDs are myocardial infarction/MI (heart att ...
... Cardiovascular diseases (CVD) are the leading cause of death in the U.S. and developed countries. The CDC reports that in 2007 there were 616,067 deaths caused by heart problems and that many, if not most, were preventable. According to the WHO, the major CVDs are myocardial infarction/MI (heart att ...
Duration of the Phases of Left Ventricular Systole
... introduced through the right atrial appendage. Blood was pumped by a roller pump from the reservoir through a bubble trap and heat exchanger and returned to the main pulmonary artery. The return eannula was introduced through the right ventricular outflow tract and tied securely by a tape previously ...
... introduced through the right atrial appendage. Blood was pumped by a roller pump from the reservoir through a bubble trap and heat exchanger and returned to the main pulmonary artery. The return eannula was introduced through the right ventricular outflow tract and tied securely by a tape previously ...
Retrieval of a transcatheter pacemaker in sheep after a mid
... rare situations, the TPS may need to be removed. Although the TPS and delivery system were designed for acute TPS recovery and repositioning, to date no technical recommendations are available to approach chronically implanted devices. Some may argue that the most common time for retrieval/ extracti ...
... rare situations, the TPS may need to be removed. Although the TPS and delivery system were designed for acute TPS recovery and repositioning, to date no technical recommendations are available to approach chronically implanted devices. Some may argue that the most common time for retrieval/ extracti ...
Lecture - Radiology
... WHAT AND WHERE IS IT? Coin in esophagus shows a wider diameter than possible in the trachea and is posterior to the tracheal air stripe on the lateral chest x-ray. ...
... WHAT AND WHERE IS IT? Coin in esophagus shows a wider diameter than possible in the trachea and is posterior to the tracheal air stripe on the lateral chest x-ray. ...
Right and left ventricular ejection fraction in acute inferior wall
... wall. Occlusion of such a long left anterior descending artery may lead to an electrocardiographic pattern of both anterior and inferior wall myocardial infarction. The differentiation between occlusion of the right or circumflex coronary artery cannot be made from the standard 12 lead electrocardio ...
... wall. Occlusion of such a long left anterior descending artery may lead to an electrocardiographic pattern of both anterior and inferior wall myocardial infarction. The differentiation between occlusion of the right or circumflex coronary artery cannot be made from the standard 12 lead electrocardio ...
Valves
... How Does the Physiology of Skeletal and Cardiac Muscle Differ? (cont.) • Differences between cardiac and skeletal muscle – Some cardiac muscle cells are self-excitable • Two kinds of myocytes – Contractile cells: responsible for contraction – Pacemaker cells: noncontractile cells that spontaneously ...
... How Does the Physiology of Skeletal and Cardiac Muscle Differ? (cont.) • Differences between cardiac and skeletal muscle – Some cardiac muscle cells are self-excitable • Two kinds of myocytes – Contractile cells: responsible for contraction – Pacemaker cells: noncontractile cells that spontaneously ...
Cardiopulmonary Resuscitation: Current Status
... be re-established from the sinus node. The current delivered to the heart is determined by both the energy level chosen (J) and the transthoracic impedance present. For example, the use of bare paddles without a couplant (eg, gel, cream) results in very high transthoracic impedance; impedance can be ...
... be re-established from the sinus node. The current delivered to the heart is determined by both the energy level chosen (J) and the transthoracic impedance present. For example, the use of bare paddles without a couplant (eg, gel, cream) results in very high transthoracic impedance; impedance can be ...
Increased alveolar/capillary membrane resistance
... over a brief period. Alveolar/capillary membrane resistance may provide a more useful and sensitive non-invasive marker for the assessment of pulmonary microvascular damage than conventional haemodynamic measures, reflecting the cumulative damage sustained throughout the course of the underlying dis ...
... over a brief period. Alveolar/capillary membrane resistance may provide a more useful and sensitive non-invasive marker for the assessment of pulmonary microvascular damage than conventional haemodynamic measures, reflecting the cumulative damage sustained throughout the course of the underlying dis ...
Brain natriuretic peptide and optimal management of heart
... have reduced BNP concentrations while others have sustained BNP concentration. The reduction of BNP may precede the alteration of ventricular sizes and therefore sensitively indicate an effective therapeutic strategy. The concept of BNP guided therapy is based on the two randomized trials. Whether t ...
... have reduced BNP concentrations while others have sustained BNP concentration. The reduction of BNP may precede the alteration of ventricular sizes and therefore sensitively indicate an effective therapeutic strategy. The concept of BNP guided therapy is based on the two randomized trials. Whether t ...
Boundless Study Slides
... • aorta the largest artery in the human body which carries the blood from the heart to all parts of the body except the lungs • atrioventricular (AV) node part of the electrical control system of the heart that coordinates the top of the heart; electrically connects atrial and ventricular chambers • ...
... • aorta the largest artery in the human body which carries the blood from the heart to all parts of the body except the lungs • atrioventricular (AV) node part of the electrical control system of the heart that coordinates the top of the heart; electrically connects atrial and ventricular chambers • ...
Obesity and the Risk of Heart Failure
... At each examination, a medical history was taken, a physical examination (including anthropometric measurements and measurement of blood pressure) was performed, a 12-lead electrocardiogram was obtained, and risk factors for cardiovascular disease were assessed. Height and weight were measured accor ...
... At each examination, a medical history was taken, a physical examination (including anthropometric measurements and measurement of blood pressure) was performed, a 12-lead electrocardiogram was obtained, and risk factors for cardiovascular disease were assessed. Height and weight were measured accor ...
Angiotensin II Type 2 Receptors and Cardiac
... Abstract—The development of left ventricular hypertrophy in subjects with hypertrophic cardiomyopathy (HCM) is variable, suggesting a role for modifying factors such as angiotensin II. Angiotensin II mediates both trophic and antitrophic effects, via angiotensin II type 1 (AT1-R) and angiotensin II ...
... Abstract—The development of left ventricular hypertrophy in subjects with hypertrophic cardiomyopathy (HCM) is variable, suggesting a role for modifying factors such as angiotensin II. Angiotensin II mediates both trophic and antitrophic effects, via angiotensin II type 1 (AT1-R) and angiotensin II ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.