The Development of the Heart and Vascular System of Lepidosiren
... auriculo-ventricular opening. The posterior auricular wall remains very short and the sinu-auricular and auriculo-ventricular openings are consequently close together. The auriculoventricular plug, which is apparently a peculiarly dipnoan structure and which seems to be identically developed in Cera ...
... auriculo-ventricular opening. The posterior auricular wall remains very short and the sinu-auricular and auriculo-ventricular openings are consequently close together. The auriculoventricular plug, which is apparently a peculiarly dipnoan structure and which seems to be identically developed in Cera ...
historical background and thirty-year experience
... alternative of myocardial revascularization was later confirmed by others [13-16]. Technical maneuvers were described in order to facilitate construction of the distal anastomoses, such anesthesia expertise, pharmacological “stabilizers” to reduce heart rate and position of the operating table. Duri ...
... alternative of myocardial revascularization was later confirmed by others [13-16]. Technical maneuvers were described in order to facilitate construction of the distal anastomoses, such anesthesia expertise, pharmacological “stabilizers” to reduce heart rate and position of the operating table. Duri ...
Clinical predictors of the defibrillation threshold with the
... Defibrillation threshold testing. The defibrillation threshold of the unipolar system was determined before testing and implantation of a standard system that utilized two transvenous electrodes and a left infraclavicular subcutaneous patch. Standard antiarrhythmic medications were stopped at least ...
... Defibrillation threshold testing. The defibrillation threshold of the unipolar system was determined before testing and implantation of a standard system that utilized two transvenous electrodes and a left infraclavicular subcutaneous patch. Standard antiarrhythmic medications were stopped at least ...
PDF Article - ScienceDirect
... heart in a succession of planes all parallel to the A V rings usually begin at the apex and end near the AV valves where little attention is paid to the crista supraventricularis, which remains with the supraventricular chambers, its useful ori• entation to the interventricular septum having been cu ...
... heart in a succession of planes all parallel to the A V rings usually begin at the apex and end near the AV valves where little attention is paid to the crista supraventricularis, which remains with the supraventricular chambers, its useful ori• entation to the interventricular septum having been cu ...
special article
... sarcomere is delineated by two dark lines termed 'Z lines." In the center of the sarcomere is a dark area, termed the "A band," which is flanked by two lighter zones termed 'I bands." The bands of the sarcomere are well explained by the disposition of myofilaments within it. Thus, thick filaments of ...
... sarcomere is delineated by two dark lines termed 'Z lines." In the center of the sarcomere is a dark area, termed the "A band," which is flanked by two lighter zones termed 'I bands." The bands of the sarcomere are well explained by the disposition of myofilaments within it. Thus, thick filaments of ...
PDF Full-text
... VADs operate in parallel with the native ventricles and affect both haemodynamic and mechanical interactions with changes in ventricular function [36–38]. Following LVAD insertion, potential alterations of right ventricular blood flow, compliance and anatomy can unmask an otherwise occult mild right ...
... VADs operate in parallel with the native ventricles and affect both haemodynamic and mechanical interactions with changes in ventricular function [36–38]. Following LVAD insertion, potential alterations of right ventricular blood flow, compliance and anatomy can unmask an otherwise occult mild right ...
Cardiovascular magnetic resonance imaging in ischemic heart
... patients with typical or atypical chest pain or correlates suspected of being due to CAD and who have a low or intermediate cardiovascular risk profile, as well as in asymptomatic patients with high cardiovascular risk profiles, such as diabetics, or in patients with known CAD during follow-up (10). E ...
... patients with typical or atypical chest pain or correlates suspected of being due to CAD and who have a low or intermediate cardiovascular risk profile, as well as in asymptomatic patients with high cardiovascular risk profiles, such as diabetics, or in patients with known CAD during follow-up (10). E ...
Document
... aggregates within the LV wall.1,2 However, accurate evaluation of radial motion is equally important. For example, radial wall motion abnormalities have been detected in patients with diabetes3 and hypertrophic cardiomyopathy,4 whereas radial dyssynchrony is almost universal in patients with heart f ...
... aggregates within the LV wall.1,2 However, accurate evaluation of radial motion is equally important. For example, radial wall motion abnormalities have been detected in patients with diabetes3 and hypertrophic cardiomyopathy,4 whereas radial dyssynchrony is almost universal in patients with heart f ...
Atrial Arrhythmias After Single-Ring Isolation of the Posterior Left
... interatrial septum between the septal puncture site in the foramen ovale and the septal margin of the right pulmonary veins (Figure 1B). It then passed below the right inferior pulmonary vein and back across the PLA to below the left inferior pulmonary vein before ascending up the lateral left atriu ...
... interatrial septum between the septal puncture site in the foramen ovale and the septal margin of the right pulmonary veins (Figure 1B). It then passed below the right inferior pulmonary vein and back across the PLA to below the left inferior pulmonary vein before ascending up the lateral left atriu ...
Perventricular device closure of congenital muscular ventricular
... compromise, cardiac perforation, tamponade and death. Perventricular closure of such defects, introduced by Amin and coworkers in the late 1990s, has become an attractive treatment modality for these small and high-risk patients. Experience worldwide has shown that the procedure is feasible, reprodu ...
... compromise, cardiac perforation, tamponade and death. Perventricular closure of such defects, introduced by Amin and coworkers in the late 1990s, has become an attractive treatment modality for these small and high-risk patients. Experience worldwide has shown that the procedure is feasible, reprodu ...
Myocardial Lysosomes in Experimental Atrial Septal Defects
... right shunt in atrial septal defects bypasses the left ventricle. However, although the heart does have a right and a left side, it Circulation Research, Vol. XXI, July 1967 ...
... right shunt in atrial septal defects bypasses the left ventricle. However, although the heart does have a right and a left side, it Circulation Research, Vol. XXI, July 1967 ...
Xanthine Derivatives in the Heart: Blessed or Cursed?
... adenosine receptor subtype-specific xanthine antagonists are also the subject of this paper. Based on the adenosine receptor-antagonistic activity of these compounds, it can be raised that xanthine derivatives might inhibit the cardioprotective action of endogenous adenosine on various subtypes (A1, ...
... adenosine receptor subtype-specific xanthine antagonists are also the subject of this paper. Based on the adenosine receptor-antagonistic activity of these compounds, it can be raised that xanthine derivatives might inhibit the cardioprotective action of endogenous adenosine on various subtypes (A1, ...
Impact of ejection on magnitude and time course of ventricular
... smallestvolume wasthe ESV; other clamp volumeswere set at intervals between 5 and 10 ml. This entire procedure took between 5 and 10 min. Stability of the preparation over this brief period was evaluated by superimposingpressure-volume(P-V) loops obtained during the ejecting period just preceding ea ...
... smallestvolume wasthe ESV; other clamp volumeswere set at intervals between 5 and 10 ml. This entire procedure took between 5 and 10 min. Stability of the preparation over this brief period was evaluated by superimposingpressure-volume(P-V) loops obtained during the ejecting period just preceding ea ...
Percutaneous closure of a post-traumatic ventricular septal defect
... Amplatzer Muscular VSD Occluder and ASD Occluder were employed. Complete closure using the Amplatzer Muscular VSD Occluder or ASD Occluder is achieved in 92% of patients with a perimembranous VSD and in 95% of patients with a muscular VSD (11). In a previous report, an Amplatzer device was successfu ...
... Amplatzer Muscular VSD Occluder and ASD Occluder were employed. Complete closure using the Amplatzer Muscular VSD Occluder or ASD Occluder is achieved in 92% of patients with a perimembranous VSD and in 95% of patients with a muscular VSD (11). In a previous report, an Amplatzer device was successfu ...
2012 ACCF/AHA/HRS Focused Update
... and the American Heart Association (AHA) have jointly engaged in the production of such guidelines in the area of cardiovascular disease since 1980. The ACCF/AHA Task Force on Practice Guidelines (Task Force), whose charge is to develop, update, or revise practice guidelines for important cardiovasc ...
... and the American Heart Association (AHA) have jointly engaged in the production of such guidelines in the area of cardiovascular disease since 1980. The ACCF/AHA Task Force on Practice Guidelines (Task Force), whose charge is to develop, update, or revise practice guidelines for important cardiovasc ...
Jo Ellen Rodgers, PharmD, FCCP, BCPS
... American Society of Hospital Pharmacists Student Leadership Award, 1994 National Naval Medical Center Accommodation, 1993 National Naval Medical Center Letter of Recognition, 1992 ...
... American Society of Hospital Pharmacists Student Leadership Award, 1994 National Naval Medical Center Accommodation, 1993 National Naval Medical Center Letter of Recognition, 1992 ...
2015 Heart Rhythm Society Expert Consensus Statement on the
... present with POTS between the ages of 15 and 25 years,7 and more than 75% are female.7–9,11–14,16 POTS is also common in patients with chronic fatigue syndrome.17 The chronic and usually systemic symptoms and the frustration caused by the difficulty in obtaining medical help can significantly lower th ...
... present with POTS between the ages of 15 and 25 years,7 and more than 75% are female.7–9,11–14,16 POTS is also common in patients with chronic fatigue syndrome.17 The chronic and usually systemic symptoms and the frustration caused by the difficulty in obtaining medical help can significantly lower th ...
2015 Heart Rhythm Society Expert Consensus Statement on the
... present with POTS between the ages of 15 and 25 years,7 and more than 75% are female.7–9,11–14,16 POTS is also common in patients with chronic fatigue syndrome.17 The chronic and usually systemic symptoms and the frustration caused by the difficulty in obtaining medical help can significantly lower th ...
... present with POTS between the ages of 15 and 25 years,7 and more than 75% are female.7–9,11–14,16 POTS is also common in patients with chronic fatigue syndrome.17 The chronic and usually systemic symptoms and the frustration caused by the difficulty in obtaining medical help can significantly lower th ...
Arrhythmia/Electrophysiology
... substantial complication of implanted cardioverter/defibrillator (ICD) therapy. Whether use of optimally programmed dual-chamber ICDs lowers this risk compared with that in single-chamber ICDs is not clear. Methods and Results—Subjects with a clinical indication for ICD (n⫽400) at 27 participating c ...
... substantial complication of implanted cardioverter/defibrillator (ICD) therapy. Whether use of optimally programmed dual-chamber ICDs lowers this risk compared with that in single-chamber ICDs is not clear. Methods and Results—Subjects with a clinical indication for ICD (n⫽400) at 27 participating c ...
Left Coronary Artery System – Angiographic Anatomy.
... artery and its dominance pattern on cineangiographic films. To correlate the above studies and their clinical implication in Indian population. ...
... artery and its dominance pattern on cineangiographic films. To correlate the above studies and their clinical implication in Indian population. ...
Determination of Inadvertent Atrial Capture During Para
... We prospectively analyzed intracardiac recordings in patients undergoing an electrophysiology study who had the placement of a CS catheter, a His catheter (or catheter capable of His pacing), and an HRA catheter. Thirty-one patients undergoing electrophysiology study for documented or suspected supr ...
... We prospectively analyzed intracardiac recordings in patients undergoing an electrophysiology study who had the placement of a CS catheter, a His catheter (or catheter capable of His pacing), and an HRA catheter. Thirty-one patients undergoing electrophysiology study for documented or suspected supr ...
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 ...
Endogenous Endothelin-1 Depresses Left Ventricular Systolic and
... of L-754,142. To determine the dosage for the ET-1 antagonist L-754,142, we measured cardiovascular responses during ET-1 infusion with and without pretreatment of L-754,142. Data were initially recorded with the animals lying quietly on their sides without medication to obtain baseline values. Thre ...
... of L-754,142. To determine the dosage for the ET-1 antagonist L-754,142, we measured cardiovascular responses during ET-1 infusion with and without pretreatment of L-754,142. Data were initially recorded with the animals lying quietly on their sides without medication to obtain baseline values. Thre ...
Shi-Joon Yoo, Omar Thabit, Hyun Woo Goo, Whal Lee, Deane Yim
... in the lower panels of Figures 1-1 and 1-2. In the majority of the hearts of this kind, both features coexist. The hearts described as ‘criss-cross hearts’ almost invariably show the inlet of one ventricle located superior to the inlet of the other ventricle. The right ventricular inlet is almost al ...
... in the lower panels of Figures 1-1 and 1-2. In the majority of the hearts of this kind, both features coexist. The hearts described as ‘criss-cross hearts’ almost invariably show the inlet of one ventricle located superior to the inlet of the other ventricle. The right ventricular inlet is almost al ...
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.