Identification and Documentation of Environmental
... A. Schematic view of an idealized action potential illustrates its various phases as the action potential passes a point on a cell membrane. B. Actual recordings of action potentials are often distorted compared to the schematic view because of variations in electrophysiological techniques used to m ...
... A. Schematic view of an idealized action potential illustrates its various phases as the action potential passes a point on a cell membrane. B. Actual recordings of action potentials are often distorted compared to the schematic view because of variations in electrophysiological techniques used to m ...
Atrial Natriuretic Factor
... atrial [a´tre-al] pertaining to an atrium. atrial natriuretic factor (anf) a hormone produced in the cardiac atrium; it inhibits renin secretion and thus the ... ATRIAL NATRIURETIC FACTOR - DEFINITION OF ATRIAL ... Sun, 16 Apr 2017 14:09:00 GMT atrial natriuretic peptide. n. a peptide hormone that i ...
... atrial [a´tre-al] pertaining to an atrium. atrial natriuretic factor (anf) a hormone produced in the cardiac atrium; it inhibits renin secretion and thus the ... ATRIAL NATRIURETIC FACTOR - DEFINITION OF ATRIAL ... Sun, 16 Apr 2017 14:09:00 GMT atrial natriuretic peptide. n. a peptide hormone that i ...
Outcome after mitral valve surgery for mitral valve regurgitation
... The repair of degenerative mitral valve regurgitation has been shown to be an effective procedure with durable results. The techniques for mitral valve repair are not completely risk-free for late failure, and the identification of factors associated with this increased risk is of clinical relevance ...
... The repair of degenerative mitral valve regurgitation has been shown to be an effective procedure with durable results. The techniques for mitral valve repair are not completely risk-free for late failure, and the identification of factors associated with this increased risk is of clinical relevance ...
Simons-Morton, Mark A. Williams and Terry Bazzarre Jerome Fleg
... Systolic blood pressure rises with increasing dynamic work as a result of increasing cardiac output, whereas diastolic pressure usually remains about the same or moderately lower, and it may be heard to zero in some normal subjects. Normal values of maximum systolic blood pressure for men have been ...
... Systolic blood pressure rises with increasing dynamic work as a result of increasing cardiac output, whereas diastolic pressure usually remains about the same or moderately lower, and it may be heard to zero in some normal subjects. Normal values of maximum systolic blood pressure for men have been ...
A review of spontaneous closure of ventricular septal defect
... children, at 3.5 years old, the incidence declines sharply to 44% and then rises to 66% at 7 years and 75% at 10.5 years (6). A similar trend has been found in other reports, which showed 57% (109/190) of cases closed before 3 years of age, 89% (169/190) closed before 8 years of age (7), and 4% to 1 ...
... children, at 3.5 years old, the incidence declines sharply to 44% and then rises to 66% at 7 years and 75% at 10.5 years (6). A similar trend has been found in other reports, which showed 57% (109/190) of cases closed before 3 years of age, 89% (169/190) closed before 8 years of age (7), and 4% to 1 ...
Cardiological Society of India
... We studied the clinical profile and homocysteine level in angiographically proven coronary artery disease (CAD) in 128 patients with a mean age of 56.4±9.1 years (116 males, 12 females). There were 36 (28%) diabetic, 46 (36%) hypertensive, 30 (23%) smoker and 16 (13%), with a positive family history ...
... We studied the clinical profile and homocysteine level in angiographically proven coronary artery disease (CAD) in 128 patients with a mean age of 56.4±9.1 years (116 males, 12 females). There were 36 (28%) diabetic, 46 (36%) hypertensive, 30 (23%) smoker and 16 (13%), with a positive family history ...
Exercise Standards for Testing and Training A Statement for
... Systolic blood pressure rises with increasing dynamic work as a result of increasing cardiac output, whereas diastolic pressure usually remains about the same or moderately lower, and it may be heard to zero in some normal subjects. Normal values of maximum systolic blood pressure for men have been ...
... Systolic blood pressure rises with increasing dynamic work as a result of increasing cardiac output, whereas diastolic pressure usually remains about the same or moderately lower, and it may be heard to zero in some normal subjects. Normal values of maximum systolic blood pressure for men have been ...
Multiple Defects in Intracellular Calcium Cycling in Whole Failing
... The goal of this study was to measure the defects in intracellular Ca2⫹ cycling in left ventricular epicardial myocytes of the whole heart in an animal model of congestive heart failure (CHF). Methods and Results—Intracellular Ca2⫹ transients were measured using confocal microscopy in whole rat hear ...
... The goal of this study was to measure the defects in intracellular Ca2⫹ cycling in left ventricular epicardial myocytes of the whole heart in an animal model of congestive heart failure (CHF). Methods and Results—Intracellular Ca2⫹ transients were measured using confocal microscopy in whole rat hear ...
1 - Circulation Research
... which were then gradually lowered. Thus the dogsurvived a greater number of experimental discharges. After every discharge there was an interval of 5-15 minutes to allow the cardiac rhythm to i*ecover. When changes of cardiac rhythm of a permanent character or of long duration occurred, we discontin ...
... which were then gradually lowered. Thus the dogsurvived a greater number of experimental discharges. After every discharge there was an interval of 5-15 minutes to allow the cardiac rhythm to i*ecover. When changes of cardiac rhythm of a permanent character or of long duration occurred, we discontin ...
Magnesium and cardiovascular system
... aggregation, fibrinogen binding, and expression of P-selectin on the platelet surface, are all effectively inhibited by intravenous magnesium supplementation. Since glycoprotein IIb-IIIa is the only glycoprotein on the platelet surface that binds fibrinogen, Gawaz et al. speculated that magnesium su ...
... aggregation, fibrinogen binding, and expression of P-selectin on the platelet surface, are all effectively inhibited by intravenous magnesium supplementation. Since glycoprotein IIb-IIIa is the only glycoprotein on the platelet surface that binds fibrinogen, Gawaz et al. speculated that magnesium su ...
Atrial fibrillation - European Society of Cardiology
... In atrial fibrillation, there is a complete absence of coordinated atrial systole. This arrhythmia is characterized on the ECG by the absence of consistent P waves before each QRS complex; instead there are rapid oscillations of ‘f’ waves which vary in size, shape, and timing and there is usually an ...
... In atrial fibrillation, there is a complete absence of coordinated atrial systole. This arrhythmia is characterized on the ECG by the absence of consistent P waves before each QRS complex; instead there are rapid oscillations of ‘f’ waves which vary in size, shape, and timing and there is usually an ...
Aalborg Universitet Christensen, Toke Folke
... The ‘dead in bed’ syndrome is a condition where otherwise healthy young people with type 1 diabetes are found dead in the morning in an undisturbed bed. It has been hypothesized that the phenomenon may be caused by hypoglycaemia triggering cardiac arrhythmia. This hypothesis has been strengthened wi ...
... The ‘dead in bed’ syndrome is a condition where otherwise healthy young people with type 1 diabetes are found dead in the morning in an undisturbed bed. It has been hypothesized that the phenomenon may be caused by hypoglycaemia triggering cardiac arrhythmia. This hypothesis has been strengthened wi ...
sinus node paces
... repolarization generate an electric current known as an electrical axis or vector (different from the axis of a lead) ...
... repolarization generate an electric current known as an electrical axis or vector (different from the axis of a lead) ...
Valsalva Sinus Aneurysms: Findings at CT and MR Imaging
... aorta (1). Although angiography is considered the reference standard for confirming the pres- ence of a Valsalva sinus aneurysm, most are initially seen at color Doppler echocardiography. Of 177 individual case reports of Valsalva sinus aneurysms published over the past 10 years, the diagnosis was m ...
... aorta (1). Although angiography is considered the reference standard for confirming the pres- ence of a Valsalva sinus aneurysm, most are initially seen at color Doppler echocardiography. Of 177 individual case reports of Valsalva sinus aneurysms published over the past 10 years, the diagnosis was m ...
2016 Rhythm Management Billing and Coding
... subject to change without notice as a result of complex and frequently changing laws, regulations, rules and policies. This information is provided for illustrative purposes only and does not constitute reimbursement or legal advice. Boston Scientific encourages providers to submit accurate and appr ...
... subject to change without notice as a result of complex and frequently changing laws, regulations, rules and policies. This information is provided for illustrative purposes only and does not constitute reimbursement or legal advice. Boston Scientific encourages providers to submit accurate and appr ...
Dr Boris Orlov
... will go on to develop moderate or severe regurgitation. In one series, 43% of patients had severe tricuspid regurgitation at a mean follow-up of 11 years after isolated mitral valve replacement Porter A, Shapira Y, Wurzel M, et al.: J Heart Valve Dis 1999, 8:57–62. ...
... will go on to develop moderate or severe regurgitation. In one series, 43% of patients had severe tricuspid regurgitation at a mean follow-up of 11 years after isolated mitral valve replacement Porter A, Shapira Y, Wurzel M, et al.: J Heart Valve Dis 1999, 8:57–62. ...
Libby: Braunwald`s Heart Disease
... Patients with suspected CAD who have severe stable angina (Canadian Cardiovascular Society [CCS] class III or IV) or those who have less severe symptoms or are asymptomatic but demonstrate “high-risk” criteria for an adverse outcome on noninvasive testing should undergo coronary arteriography. High- ...
... Patients with suspected CAD who have severe stable angina (Canadian Cardiovascular Society [CCS] class III or IV) or those who have less severe symptoms or are asymptomatic but demonstrate “high-risk” criteria for an adverse outcome on noninvasive testing should undergo coronary arteriography. High- ...
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 ...
Comprehensive characterisation of hypertensive heart disease left
... cell volume (eccentric LVH: 78±19 mL/m2 vs concentric LVH: 73±15 mL/m2 vs concentric remodelling: 55±9 mL/m2, p<0.05, respectively) and interstitial fibrosis (eccentric LVH: 33±10 mL/m2 vs concentric LVH: 30±10 mL/m2 vs concentricremodelling: 19±2 mL/m2, p<0.05, respectively). LVH had worst circumfer ...
... cell volume (eccentric LVH: 78±19 mL/m2 vs concentric LVH: 73±15 mL/m2 vs concentric remodelling: 55±9 mL/m2, p<0.05, respectively) and interstitial fibrosis (eccentric LVH: 33±10 mL/m2 vs concentric LVH: 30±10 mL/m2 vs concentricremodelling: 19±2 mL/m2, p<0.05, respectively). LVH had worst circumfer ...
atrial arrhythmogenesis during myocardial infarction
... Coronary Artery Disease Affecting the Atrial Branches is an Independent Determinant of Atrial Fibrillation After Myocardial Infarction ...................................................................................................... 95 ...
... Coronary Artery Disease Affecting the Atrial Branches is an Independent Determinant of Atrial Fibrillation After Myocardial Infarction ...................................................................................................... 95 ...
1 PULMONARY HYPERTENSION Robyn J. Barst, MD I
... vasculature to accommodate increases in blood flow. In pulmonary hypertension, however, this capacity is lost, leading to increases in pulmonary artery pressure at rest and further elevations in pulmonary artery pressure with exercise. In response to this increased afterload, the right ventricle hyp ...
... vasculature to accommodate increases in blood flow. In pulmonary hypertension, however, this capacity is lost, leading to increases in pulmonary artery pressure at rest and further elevations in pulmonary artery pressure with exercise. In response to this increased afterload, the right ventricle hyp ...
medics.cc
... By the end of this tutorial the student should be able to: State a definition of electrocardiogram Perform an ECG on a patient, including explaining to the patient what is involved Draw a diagram of the conduction pathway of the heart Draw a simple labelled diagram of an ECG tracing List t ...
... By the end of this tutorial the student should be able to: State a definition of electrocardiogram Perform an ECG on a patient, including explaining to the patient what is involved Draw a diagram of the conduction pathway of the heart Draw a simple labelled diagram of an ECG tracing List t ...
Low intrinsic exercise capacity in rats predisposes to - AJP
... perfusion). These cardiac changes, in combination with induction of systemic endothelial dysfunction (potentially elevating afterload), may well be contributing factors to later development of cardiac dysfunction and failure (48). How these cardiovascular abnormalities progress in the context of a r ...
... perfusion). These cardiac changes, in combination with induction of systemic endothelial dysfunction (potentially elevating afterload), may well be contributing factors to later development of cardiac dysfunction and failure (48). How these cardiovascular abnormalities progress in the context of a r ...
Rad GTPase Deletion Increases Ltype Calcium Channel Current
... Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. ...
... Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. ...
THE INFLUENCE OF THE VAGUS NERVES ON THE FARADIZED
... the faradization ceased, it was repeated three times at intervals of one minute. If still unsuccessful, the vagi were cut and stimulation of the auricle was repeated in the same manner. Several minutes were allowed to elapse between the two sets of stimulations. If rapid, tumultuous auricular activi ...
... the faradization ceased, it was repeated three times at intervals of one minute. If still unsuccessful, the vagi were cut and stimulation of the auricle was repeated in the same manner. Several minutes were allowed to elapse between the two sets of stimulations. If rapid, tumultuous auricular activi ...
Cardiac contractility modulation
Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.