Alternate Pacing Sites in the Atria and the Right Ventricle
... apex of the right ventricle. 1 Since then, for many years, whenever a pacemaker was needed pacing was from the right ventricular apex in almost all cases. The reason for choosing this site was that it ensured satisfactory stability of pacing because of the anatomy of the right ventricular apex. Howe ...
... apex of the right ventricle. 1 Since then, for many years, whenever a pacemaker was needed pacing was from the right ventricular apex in almost all cases. The reason for choosing this site was that it ensured satisfactory stability of pacing because of the anatomy of the right ventricular apex. Howe ...
Paroxysmal Supraventricular Tachycardia
... One could postulate that each premature atrial depolarization was conducted down the antegrade limb of the re-entrant circuit and fortuitously failed to alter the cycle length of the tachycardia due to an exact "compensatory" delay of conduction down that limb. However, premature atrial depolarizati ...
... One could postulate that each premature atrial depolarization was conducted down the antegrade limb of the re-entrant circuit and fortuitously failed to alter the cycle length of the tachycardia due to an exact "compensatory" delay of conduction down that limb. However, premature atrial depolarizati ...
PDF Article
... The Collagen Network of the Heart The leaflets of the semilunar and atrioventricular (AV) valves, together with chordae tendineae and the intramyocardial collagen matrix, form a structural continuum (Fig. I) that represents the collagen network of the heart (21). A biochemical defect (22) within thi ...
... The Collagen Network of the Heart The leaflets of the semilunar and atrioventricular (AV) valves, together with chordae tendineae and the intramyocardial collagen matrix, form a structural continuum (Fig. I) that represents the collagen network of the heart (21). A biochemical defect (22) within thi ...
A review of spontaneous closure of ventricular septal defect
... period, in childhood, and in adulthood. Spontaneous closure of VSD can be determined through a variety of methods—echocardiography, Doppler color flow imaging, angiography, auscultation, and cardiac catheterization—and can be proven by pathological evidence at necropsy. There are two major types of ...
... period, in childhood, and in adulthood. Spontaneous closure of VSD can be determined through a variety of methods—echocardiography, Doppler color flow imaging, angiography, auscultation, and cardiac catheterization—and can be proven by pathological evidence at necropsy. There are two major types of ...
CURRICULUM VITAE John Alex Elefteriades, M.D. Date of Revision
... He performs all aspects of adult cardiac and thoracic surgery. He is a recognized authority in interventions for the failing left ventricle, including coronary artery bypass grafting, left ventricular aneurysmectomy, and artificial heart implantation. Dr. Elefteriades directs the Aortic Institute at ...
... He performs all aspects of adult cardiac and thoracic surgery. He is a recognized authority in interventions for the failing left ventricle, including coronary artery bypass grafting, left ventricular aneurysmectomy, and artificial heart implantation. Dr. Elefteriades directs the Aortic Institute at ...
Bassett, Kiah - Cardiff Metropolitan University
... a redistribution of blood that would cause decreased preload due to a reduction in venous return. Previous studies have also shown a reduction in end- diastolic volume, which could mean that the change in LV function previously observed is due to a change in blood movement/flow rather than a reducti ...
... a redistribution of blood that would cause decreased preload due to a reduction in venous return. Previous studies have also shown a reduction in end- diastolic volume, which could mean that the change in LV function previously observed is due to a change in blood movement/flow rather than a reducti ...
medSim 300B - setgad.com
... Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or en ...
... Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or en ...
Pericardial Disease: Etiology, Pathophysiology
... Echocardiography is, without doubt, the best tool for establishing the presence of pericardial effusion. Not only can the presence or absence of pericardial effusion be established with remarkable certainty33 (Fig. 68.1), but, in addition, one can make a reliable estimate as to whether the effusion ...
... Echocardiography is, without doubt, the best tool for establishing the presence of pericardial effusion. Not only can the presence or absence of pericardial effusion be established with remarkable certainty33 (Fig. 68.1), but, in addition, one can make a reliable estimate as to whether the effusion ...
Pediatric Pulmonary Hypertension
... CHD of any type who develop PHVD. The task force also recognized lesions in which pulmonary vascular disease is likely, but the specific criteria for PH are not met, and thus are not included in the Nice clinical classification. This includes patients with single ventricle physiology who have undergon ...
... CHD of any type who develop PHVD. The task force also recognized lesions in which pulmonary vascular disease is likely, but the specific criteria for PH are not met, and thus are not included in the Nice clinical classification. This includes patients with single ventricle physiology who have undergon ...
American College of Cardiology - Hypertrophic Cardiomyopathy
... areas of clinical practice and/or technologies that are widely available or new to the practice community. Topics chosen for coverage by expert consensus documents are so designed because the evidence base, the experience with technology, and/or the clinical practice are not considered sufficiently ...
... areas of clinical practice and/or technologies that are widely available or new to the practice community. Topics chosen for coverage by expert consensus documents are so designed because the evidence base, the experience with technology, and/or the clinical practice are not considered sufficiently ...
American College of Cardiology/ European Society of Cardiology
... areas of clinical practice and/or technologies that are widely available or new to the practice community. Topics chosen for coverage by expert consensus documents are so designed because the evidence base, the experience with technology, and/or the clinical practice are not considered sufficiently ...
... areas of clinical practice and/or technologies that are widely available or new to the practice community. Topics chosen for coverage by expert consensus documents are so designed because the evidence base, the experience with technology, and/or the clinical practice are not considered sufficiently ...
Segment of Left Pulmonary Artery
... there were 32 patients with "absent pulmonary artery" as an isolated anomaly. Pulmonary hypertension was present in five of these. Each of the five patients with pulmonary hypertension died by the age of 14 months. Microscopic examination revealed medial hypertrophy in the small pulmonary vessels of ...
... there were 32 patients with "absent pulmonary artery" as an isolated anomaly. Pulmonary hypertension was present in five of these. Each of the five patients with pulmonary hypertension died by the age of 14 months. Microscopic examination revealed medial hypertrophy in the small pulmonary vessels of ...
Venous Thromboembolism Increases the Risk of Atrial Fibrillation
... Conclusions-—We found that incident VTE was associated with future risk of atrial fibrillation. Our findings support the hypothesis that PE may lead to cardiac dysfunctions that, in turn, could trigger atrial fibrillation. ( J Am Heart Assoc. 2013;2:e000483 doi: 10.1161/JAHA.113.000483) Key Words: epid ...
... Conclusions-—We found that incident VTE was associated with future risk of atrial fibrillation. Our findings support the hypothesis that PE may lead to cardiac dysfunctions that, in turn, could trigger atrial fibrillation. ( J Am Heart Assoc. 2013;2:e000483 doi: 10.1161/JAHA.113.000483) Key Words: epid ...
Implantable electromechanical displacement blood pumps
... III. Marked limitation in activity due to symptoms, even during less-than-ordinary activity. Comfortable only at rest. IV. Severe limitations. Experiences symptoms even while at rest. Several heart and circulatory diseases can lead to chronic heart failure. The most common diseases are: • Coronary a ...
... III. Marked limitation in activity due to symptoms, even during less-than-ordinary activity. Comfortable only at rest. IV. Severe limitations. Experiences symptoms even while at rest. Several heart and circulatory diseases can lead to chronic heart failure. The most common diseases are: • Coronary a ...
DISSERTATION INFLUENCE OF ANATOMIC VALVE CONDITIONS
... Heart disease is the leading cause of death in the US, and aortic valve stenosis represents a significant portion of this disease. While the specific causes of stenosis are not entirely clear, its development has been strongly linked to mechanical factors such as localized solid and fluid stresses a ...
... Heart disease is the leading cause of death in the US, and aortic valve stenosis represents a significant portion of this disease. While the specific causes of stenosis are not entirely clear, its development has been strongly linked to mechanical factors such as localized solid and fluid stresses a ...
Atrial Coronary Arteries: Anatomy And Atrial Perfusion
... which coronary artery disease contributes to ischemic heart disease through ventricular myocardial damage. Atrial fibrillation and other tachyarrhythmias that involve the atria, however, remain a major cause of morbidity and mortality. In order to increase mechanistic research and therapeutic interv ...
... which coronary artery disease contributes to ischemic heart disease through ventricular myocardial damage. Atrial fibrillation and other tachyarrhythmias that involve the atria, however, remain a major cause of morbidity and mortality. In order to increase mechanistic research and therapeutic interv ...
DOC
... Do not try to interpret oxygen values yourself, but you may infer, for example, from a decision to administer oxygen. Record YES if the patient has a documented new or increasing oxygen requirement. This may be documented in the nursing or doctor notes that suggest that: the room air (RA) pulse oxim ...
... Do not try to interpret oxygen values yourself, but you may infer, for example, from a decision to administer oxygen. Record YES if the patient has a documented new or increasing oxygen requirement. This may be documented in the nursing or doctor notes that suggest that: the room air (RA) pulse oxim ...
Print - Circulation
... of a pulmonary artery"4 is characterized by the pulmonary trunk being present but having only one branch, while the contralateral lung is supplied either by a pulmonary artery which arises by way of a ductus arteriosus from the aortic arch system or from bronchial arteries, or the supply to the lung ...
... of a pulmonary artery"4 is characterized by the pulmonary trunk being present but having only one branch, while the contralateral lung is supplied either by a pulmonary artery which arises by way of a ductus arteriosus from the aortic arch system or from bronchial arteries, or the supply to the lung ...
Influence of pacing site on canine left ventricular contraction
... *he,:n this was done, all five curves were virtually superimposable during the rising phase of the pressure tracings up to t,,,, and there were only small differences between them for the remainder of the cardiac cycle. This indicates that the peak of the R wave is a poor indicator of the start of m ...
... *he,:n this was done, all five curves were virtually superimposable during the rising phase of the pressure tracings up to t,,,, and there were only small differences between them for the remainder of the cardiac cycle. This indicates that the peak of the R wave is a poor indicator of the start of m ...
Get PDF - Wiley Online Library
... The volume fractions of dispersed hydrogel and infarcted tissue within the hydrogel-treated region were obtained from morphometric analysis of histological micrographs from a previous study [32]. All institutional and national guidelines for the care and use of laboratory animals were followed for t ...
... The volume fractions of dispersed hydrogel and infarcted tissue within the hydrogel-treated region were obtained from morphometric analysis of histological micrographs from a previous study [32]. All institutional and national guidelines for the care and use of laboratory animals were followed for t ...
The Treatment of Atrial Fibrillation
... Because the ablation procedure itself may temporarily irritate the heart and cause atrial fibrillation, patients often are treated with a medication to suppress atrial fibrillation for 2-3 months afterwards. When atrial fibrillation has been chronic, the heart develops a “memory” for the atrial fibr ...
... Because the ablation procedure itself may temporarily irritate the heart and cause atrial fibrillation, patients often are treated with a medication to suppress atrial fibrillation for 2-3 months afterwards. When atrial fibrillation has been chronic, the heart develops a “memory” for the atrial fibr ...
Aortic Valve and Ascending Aorta Guidelines for Management and
... with thoracic aortic disease. Hence, indications for surgery are not covered in detail, except where new evidence suggests an update is needed. The previous guidelines for severity of disease and the management of outcomes for patients with asymptomatic disease are summarized and covered in detail i ...
... with thoracic aortic disease. Hence, indications for surgery are not covered in detail, except where new evidence suggests an update is needed. The previous guidelines for severity of disease and the management of outcomes for patients with asymptomatic disease are summarized and covered in detail i ...
Arrhythmogenic right ventricular cardiomyopathy (ARVC
... cardiomyopathy and a frequent cause of sudden death in the young. Affected individuals typically present between the second and fourth decade of life with arrhythmias coming from the right ventricle. Pathogenic mutations in genes encoding the cardiac desmosome can be found in approximately 60% of in ...
... cardiomyopathy and a frequent cause of sudden death in the young. Affected individuals typically present between the second and fourth decade of life with arrhythmias coming from the right ventricle. Pathogenic mutations in genes encoding the cardiac desmosome can be found in approximately 60% of in ...
Detection of Intracardiac and Intrapulmonary Shunts
... PFO and an ASD because an ASD is less likely to restrict left-to-right shunting and therefore may present a greater risk of right heart volume overload and associated sequelae. An ostium primum ASD results from the incomplete fusion of the inferior and superior endocardial cushions and therefore is ...
... PFO and an ASD because an ASD is less likely to restrict left-to-right shunting and therefore may present a greater risk of right heart volume overload and associated sequelae. An ostium primum ASD results from the incomplete fusion of the inferior and superior endocardial cushions and therefore is ...
Alcohol Septal Ablation in Hypertrophic Obstructive Cardiomyopathy
... graphy is repeated after alcohol injection in order to identify the alcohol impregnation of the target septal area.38 The amount of injected alcohol depends principally on the echocardiographically estimated size of the contrasted septal area and less on the acute haemodynamic effect. This has gradu ...
... graphy is repeated after alcohol injection in order to identify the alcohol impregnation of the target septal area.38 The amount of injected alcohol depends principally on the echocardiographically estimated size of the contrasted septal area and less on the acute haemodynamic effect. This has gradu ...
Mitral insufficiency
Mitral insufficiency (MI), mitral regurgitation or mitral incompetence is a disorder of the heart in which the mitral valve does not close properly when the heart pumps out blood. It is the abnormal leaking of blood backwards from the left ventricle, through the mitral valve, into the left atrium, when the left ventricle contracts, i.e. there is regurgitation of blood back into the left atrium. MI is the most common form of valvular heart disease.