Scientific Evidence Underlying the ACC/AHA Clinical Practice
... level of evidence C. Only 6 of 17 current guidelines have a previous version reporting level of evidence. Such guidelines were those updated more frequently. In this small subset, compared with the first versions reporting levels of evidence, there was a median of 6 additional level A recommendation ...
... level of evidence C. Only 6 of 17 current guidelines have a previous version reporting level of evidence. Such guidelines were those updated more frequently. In this small subset, compared with the first versions reporting levels of evidence, there was a median of 6 additional level A recommendation ...
Proton and sodium MRI assessment of myocardial viability
... indicator of the area at risk (AAR) following myocardial infarction (MI) in mice [24] and in human [25]. T2* MRI has been used as an imaging tool to diagnose the presence of hemorrhage and myocardial iron[26]. Apparently, T1-weighted and T2‑weighted MRI show great promise to delineate injured myocar ...
... indicator of the area at risk (AAR) following myocardial infarction (MI) in mice [24] and in human [25]. T2* MRI has been used as an imaging tool to diagnose the presence of hemorrhage and myocardial iron[26]. Apparently, T1-weighted and T2‑weighted MRI show great promise to delineate injured myocar ...
ACC/AHA 2002 Guideline Update for Exercise
... therapies are considered, as well as frequency of follow-up and cost-effectiveness. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outside relationship or personal interest of a member of the ...
... therapies are considered, as well as frequency of follow-up and cost-effectiveness. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outside relationship or personal interest of a member of the ...
ACC/AHA/ESC 2006 Guidelines for the
... It is important that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states. Rigorous and expert analysis of the available data documenting ...
... It is important that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states. Rigorous and expert analysis of the available data documenting ...
Guidelines - Lettre de l`UFCV N°58
... It is important that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states. Rigorous and expert analysis of the available data documenting ...
... It is important that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states. Rigorous and expert analysis of the available data documenting ...
Effect of Ischemia on Calcium-Dependent Fluorescence
... pins of which were 4 mm apart. In some experiments, the ventricular action potential was recorded from the surface of the heart with a "contact" monophasic action potential electrode, which is known to respond linearly to changes in membrane potential.15,16 Most recordings were obtained during rapid ...
... pins of which were 4 mm apart. In some experiments, the ventricular action potential was recorded from the surface of the heart with a "contact" monophasic action potential electrode, which is known to respond linearly to changes in membrane potential.15,16 Most recordings were obtained during rapid ...
Anomalous Origin of the Left Coronary Artery from the Pulmonary
... or posterior cusp of the pulmonary trunk and rarely from that above the right cusp [5,6]. The left main coronary artery is of variable length but usually divides into anterior descending and circumflex branches within 5 or 6 mm of it’s origin. Collateral communications between right and left coronar ...
... or posterior cusp of the pulmonary trunk and rarely from that above the right cusp [5,6]. The left main coronary artery is of variable length but usually divides into anterior descending and circumflex branches within 5 or 6 mm of it’s origin. Collateral communications between right and left coronar ...
Bassett, Kiah - Cardiff Metropolitan University
... without their help, support and knowledge this project would not have been possible. Finally I would like to thank all the cyclists that took part in this study for giving up so much of their time to enable me to complete this project. ...
... without their help, support and knowledge this project would not have been possible. Finally I would like to thank all the cyclists that took part in this study for giving up so much of their time to enable me to complete this project. ...
In 1869 Meyer (I) first observed differences
... stimulated. H e found that following vagus stimulation the ventricles " b e a t for a time synchronously with every second auricular beat. ''n In other words, he obtained an incomplete auriculoventricular dissociation. H o f m a n n (I5) found that "the difference between the right and left vagi in ...
... stimulated. H e found that following vagus stimulation the ventricles " b e a t for a time synchronously with every second auricular beat. ''n In other words, he obtained an incomplete auriculoventricular dissociation. H o f m a n n (I5) found that "the difference between the right and left vagi in ...
When Calcium Turns Arrhythmogenic: Intracellular Calcium
... sis in the development of myocardial hypertrophy and in the transition to heart failure. Based on theoretical considerations and recent experimental data, we herein propose that intracellular Ca2+ handling itself does not contribute to the increased incidence of ventricular arrhythmias associated wi ...
... sis in the development of myocardial hypertrophy and in the transition to heart failure. Based on theoretical considerations and recent experimental data, we herein propose that intracellular Ca2+ handling itself does not contribute to the increased incidence of ventricular arrhythmias associated wi ...
Advances in the Study of Heart Development and Disease Using
... closer to the margin than the atrial pool, while the blastomeres that give rise to endocardial cells appear to be located across the lateral margin without any specific spatial organization [32,35,36]. These progenitors migrate during gastrulation to reside in the posterior half of anterior lateral ...
... closer to the margin than the atrial pool, while the blastomeres that give rise to endocardial cells appear to be located across the lateral margin without any specific spatial organization [32,35,36]. These progenitors migrate during gastrulation to reside in the posterior half of anterior lateral ...
Introduction: Left ventricular (LV) twist and untwisting rate (LV twist
... at rest and during the last 3 minutes of each exercise stage. Speckle tracking technology was used post-hoc to quantify LV twist mechanics. Results: There were no significant differences between the two cohorts in HR, blood pressure, end-systolicvolume (ESV), cardiac output (CO), LV twist or circumf ...
... at rest and during the last 3 minutes of each exercise stage. Speckle tracking technology was used post-hoc to quantify LV twist mechanics. Results: There were no significant differences between the two cohorts in HR, blood pressure, end-systolicvolume (ESV), cardiac output (CO), LV twist or circumf ...
Factors affecting tolerance to digitalis
... *Factors that appear to be of greatest practical importance. tVariable effects. C!) Inconclusive evidence. AV = atrioventricular; CNS = central nervous system; SAN = sinoatrial node. ...
... *Factors that appear to be of greatest practical importance. tVariable effects. C!) Inconclusive evidence. AV = atrioventricular; CNS = central nervous system; SAN = sinoatrial node. ...
Left Ventricular Diastolic Mechanical Dyssynchrony and Associated
... Background—We investigated diastolic mechanical dyssynchrony and its relation to clinical status in pediatric dilated cardiomyopathy (DCM). Methods and Results—We calculated a diastolic and systolic dyssynchrony index (standard deviation of time to peak tissue early diastolic/systolic velocity in 12 ...
... Background—We investigated diastolic mechanical dyssynchrony and its relation to clinical status in pediatric dilated cardiomyopathy (DCM). Methods and Results—We calculated a diastolic and systolic dyssynchrony index (standard deviation of time to peak tissue early diastolic/systolic velocity in 12 ...
Enhanced Resistance to Permeability Transition in - AJP
... a concentration of 10 mg of aldosterone/mL. Eight dogs initiated treatment with aldosterone, but one dog was discontinued due to infection at the site of pump implantation, thus data are reported for 7 animals. The young and old control animals were not instrumented. The dose of aldosterone has been ...
... a concentration of 10 mg of aldosterone/mL. Eight dogs initiated treatment with aldosterone, but one dog was discontinued due to infection at the site of pump implantation, thus data are reported for 7 animals. The young and old control animals were not instrumented. The dose of aldosterone has been ...
(ACE) have atrial enlargement, cardiac arrhythmia and sudden death
... Figure 1. ACE 8/8 targeting construct. The top of the figure shows the wild-type organization of the ACE locus. Both the somatic ACE promoter and the testis ACE promoter are indicated with arrows. A unique BssH II restriction site is located between the transcription start site and the translation s ...
... Figure 1. ACE 8/8 targeting construct. The top of the figure shows the wild-type organization of the ACE locus. Both the somatic ACE promoter and the testis ACE promoter are indicated with arrows. A unique BssH II restriction site is located between the transcription start site and the translation s ...
Exercise Testing: ACC/AHA 2002 Guideline Update for
... therapies are considered, as well as frequency of follow-up and cost-effectiveness. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outside relationship or personal interest of a member of the ...
... therapies are considered, as well as frequency of follow-up and cost-effectiveness. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outside relationship or personal interest of a member of the ...
DOI: 10.1161/CIRCULATIONAHA.106.177031 published online Aug
... It is important that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states. Rigorous and expert analysis of the available data documenting ...
... It is important that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states. Rigorous and expert analysis of the available data documenting ...
ACC/AHA 2002 Guideline Update for Exercise Testing
... therapies are considered, as well as frequency of follow-up and cost-effectiveness. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outside relationship or personal interest of a member of the ...
... therapies are considered, as well as frequency of follow-up and cost-effectiveness. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outside relationship or personal interest of a member of the ...
Anatomy of the mitral valve - European Heart Journal
... structure and are referred to as the anterior and posterior leaflets by clinicians. Although neither description is anatomically correct, the terms aortic and mural leaflets are preferred.3 The mural (posterior) leaflet is narrow and extends two-thirds around the left atrioventricular junction withi ...
... structure and are referred to as the anterior and posterior leaflets by clinicians. Although neither description is anatomically correct, the terms aortic and mural leaflets are preferred.3 The mural (posterior) leaflet is narrow and extends two-thirds around the left atrioventricular junction withi ...
AEDs - The School District of Palm Beach County
... victims. Automatic external defibrillators (AEDs) made public access defibrillation possible with the devices allowing trained lay people to safely and effectively defibrillate the victim of ventricular fibrillation. The goal of public access defibrillation is to have AEDs readily available for use ...
... victims. Automatic external defibrillators (AEDs) made public access defibrillation possible with the devices allowing trained lay people to safely and effectively defibrillate the victim of ventricular fibrillation. The goal of public access defibrillation is to have AEDs readily available for use ...
ACC/AHA/ESC Practice Guidelines
... It is important that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states. Rigorous and expert analysis of the available data documenting ...
... It is important that the medical profession play a significant role in critically evaluating the use of diagnostic procedures and therapies as they are introduced and tested in the detection, management, or prevention of disease states. Rigorous and expert analysis of the available data documenting ...
Arrhythmia/Electrophysiology
... bpm. For adjudication of syncope events, technical issues such as loss of ventricular capture or pacing inhibition caused by oversensing for pacemaker-dependent patients were taken into account. Death was a prespecified end point and was adjudicated by the mortality committee by review of the docume ...
... bpm. For adjudication of syncope events, technical issues such as loss of ventricular capture or pacing inhibition caused by oversensing for pacemaker-dependent patients were taken into account. Death was a prespecified end point and was adjudicated by the mortality committee by review of the docume ...
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.