Cardiac phase-dependent time normalization reduces - VU-dare
... isovolumic relaxation and diastolic filling. We assume that a corner point of the P-V loop marks a phase transition between these periods (Figure 1; corner point detection is explained in the next paragraph). The upper right and left corner points of a P-V loop mark the start and end of ejection, re ...
... isovolumic relaxation and diastolic filling. We assume that a corner point of the P-V loop marks a phase transition between these periods (Figure 1; corner point detection is explained in the next paragraph). The upper right and left corner points of a P-V loop mark the start and end of ejection, re ...
Doppler Echocardiography in Dilated Cardiomyopathy: Diastolic
... indices contributes more detailed information on LV-function. These procedures can be carried out quickly and noninvasively, in contrast to angiographically obtained LV-EF. ...
... indices contributes more detailed information on LV-function. These procedures can be carried out quickly and noninvasively, in contrast to angiographically obtained LV-EF. ...
coronary flow in a perfused rainbow trout heart
... were measured via saline-filled tubes connected to Micron pressure transducers (Narco Life Sciences, Houston, TX). The transducers were calibrated before each experiment and regularly referenced to the fluid level in the organ bath during the experiment. All pressure measurements were corrected for ...
... were measured via saline-filled tubes connected to Micron pressure transducers (Narco Life Sciences, Houston, TX). The transducers were calibrated before each experiment and regularly referenced to the fluid level in the organ bath during the experiment. All pressure measurements were corrected for ...
What Is A Patent Foramen Ovale?
... atrial septum, used during fetal circulation to pass the oxygenated blood from the placenta directly to the left side circulation. Normally the foramen ovale closes at birth, when the increased blood pressure on the left side of the heart forces the opening to close. In about 25 percent of the popul ...
... atrial septum, used during fetal circulation to pass the oxygenated blood from the placenta directly to the left side circulation. Normally the foramen ovale closes at birth, when the increased blood pressure on the left side of the heart forces the opening to close. In about 25 percent of the popul ...
Early right ventricular fibrosis and reduction in - AJP
... been documented to occur with larger, more tightly packed collagen bundles (19). This suggests that the fibrosis present in the dystrophic heart is both more widely distributed and consists of thicker strands of collagen. To assess global function of the dystrophic heart, both right and left ventric ...
... been documented to occur with larger, more tightly packed collagen bundles (19). This suggests that the fibrosis present in the dystrophic heart is both more widely distributed and consists of thicker strands of collagen. To assess global function of the dystrophic heart, both right and left ventric ...
PowerPoint Presentation - Hemodynamic Principles
... increases resistance of G1 & G3 wires, while relaxing G2 & G4 wires • Voltage is applied across the wires and G1 G2 nnbalanced resistance leads to current flow P across Wheatstone G4 G3 bridge Vents to atmospheric pressure Baim DS and Grossman W. Cardiac Catheterization, Angiography, and Interventio ...
... increases resistance of G1 & G3 wires, while relaxing G2 & G4 wires • Voltage is applied across the wires and G1 G2 nnbalanced resistance leads to current flow P across Wheatstone G4 G3 bridge Vents to atmospheric pressure Baim DS and Grossman W. Cardiac Catheterization, Angiography, and Interventio ...
MURMURS AND DYNAMIC AUSCULTATION By Dr Ankur
... carotid arterial pulse or by identifying S 2 at base – Inching technique of Harvey and Levine – In tachycardia carotid sinus massage can slow down heart rate – In case of extra systole indentify the beat that follows pause and then first sound after pause will be S 1 ...
... carotid arterial pulse or by identifying S 2 at base – Inching technique of Harvey and Levine – In tachycardia carotid sinus massage can slow down heart rate – In case of extra systole indentify the beat that follows pause and then first sound after pause will be S 1 ...
Mitochondria in heart failure
... afterload, altered signal transduction pathways, abnormalities of calcium homeostasis, as well as neurohormonal dysregulation are major pathogenic factors for myocardial dysfunction in HF. Despite significant advances in therapy, particularly inhibition of the renin – angiotensin and sympathetic ner ...
... afterload, altered signal transduction pathways, abnormalities of calcium homeostasis, as well as neurohormonal dysregulation are major pathogenic factors for myocardial dysfunction in HF. Despite significant advances in therapy, particularly inhibition of the renin – angiotensin and sympathetic ner ...
the PDF - Heart Rhythm Society
... and cardiac surgery. It is expected that physicians will operate within the context of a multidisciplinary team (MDT) to optimize patient selection and clinical benefit. The defining principle is that LAA occlusion is an institutionally based therapy provided across multiple disciplines. Patient-cente ...
... and cardiac surgery. It is expected that physicians will operate within the context of a multidisciplinary team (MDT) to optimize patient selection and clinical benefit. The defining principle is that LAA occlusion is an institutionally based therapy provided across multiple disciplines. Patient-cente ...
images/Long term effects of RV pacing.pps
... For patients with symptomatic heart failure (NYHA Class II or III), the hallway walk distance measured at 6 months was 53% greater for patients randomized to biventricular pacing in comparison to patients receiving right ventricular pacing ...
... For patients with symptomatic heart failure (NYHA Class II or III), the hallway walk distance measured at 6 months was 53% greater for patients randomized to biventricular pacing in comparison to patients receiving right ventricular pacing ...
ANTIARRHYTHMIC THERAPY FOR ATRIAL
... Summary. Antiarrhythmic therapy can have a key role in prolonging the lives of patients with most common atrial tachyarrhythmias such as atrial flutter (AFL) or atrial fibrillation (AF). The optimal use of antiarrhytmic drug therapy depends in part on understanding the underlying mechanisms of AFL a ...
... Summary. Antiarrhythmic therapy can have a key role in prolonging the lives of patients with most common atrial tachyarrhythmias such as atrial flutter (AFL) or atrial fibrillation (AF). The optimal use of antiarrhytmic drug therapy depends in part on understanding the underlying mechanisms of AFL a ...
Method and system for pericardial modification
... for example, DacronTM, GortexTM, bovine pericardium, and the like. The graft 32 desirably is substantially inelastic or noncompliant to avoid excessive expansion during in?ation of the pump bladder, Which may undermine the ef?ciency of the pumping action by limiting the maximum pressure and compress ...
... for example, DacronTM, GortexTM, bovine pericardium, and the like. The graft 32 desirably is substantially inelastic or noncompliant to avoid excessive expansion during in?ation of the pump bladder, Which may undermine the ef?ciency of the pumping action by limiting the maximum pressure and compress ...
Print - Circulation
... diaphragm) have been performed during the expiratory effort of the Valsalva maneuver. In normal subjects the circulation times were increased by the duration of the expiratory effort and the Diodrast injections were stagnated in the veins outside the thoracic cavity. These effects were in striking c ...
... diaphragm) have been performed during the expiratory effort of the Valsalva maneuver. In normal subjects the circulation times were increased by the duration of the expiratory effort and the Diodrast injections were stagnated in the veins outside the thoracic cavity. These effects were in striking c ...
Effects of calcium, parathyroid hormone and
... 1. Metabolism of calcium Ninety-nine percent of total body calcium is located in the skeleton, and only one percent of this is rapidly exchangeable with the nonosseon extracellular calcium. This calcium pool, in turn, is in equilibrium with the intracellular calcium of the body. In blood, 35-40 % of ...
... 1. Metabolism of calcium Ninety-nine percent of total body calcium is located in the skeleton, and only one percent of this is rapidly exchangeable with the nonosseon extracellular calcium. This calcium pool, in turn, is in equilibrium with the intracellular calcium of the body. In blood, 35-40 % of ...
Increased Phosphorylation of Ca2+ Handling Proteins as a - J
... mean ± standard error of the mean (SEM). Local CV can be overestimated when 2 wave fronts collide, transmural propagation breaks through the surface or when activation appears synchronous over a region of the atrium because of its proximity to the pacing electrode. To avoid overestimations of CV, va ...
... mean ± standard error of the mean (SEM). Local CV can be overestimated when 2 wave fronts collide, transmural propagation breaks through the surface or when activation appears synchronous over a region of the atrium because of its proximity to the pacing electrode. To avoid overestimations of CV, va ...
Analysis of the Heart Sounds and Murmurs of Fetuses - REAL-PhD
... auscultation has found its main role in primary and in home health care when decisions have to be made about any further, more extensive examinations or special care. However, it seems that the real potential of heart sound analysis is still not exploited, especially in the field of fetal-neonatal e ...
... auscultation has found its main role in primary and in home health care when decisions have to be made about any further, more extensive examinations or special care. However, it seems that the real potential of heart sound analysis is still not exploited, especially in the field of fetal-neonatal e ...
Evaluation of the CO2 Rebreathing Cardiac Output
... outputs by the two methods were related: 3.50 ± 1.09 L/min by CO2 rebreathing and 4.23 ± 1.17 L/min by the standard dye-dilution or Fick methods (r = 0.52). In five patients with mitral regurgitation (diagnosed by typical apical holosystolic murmur, S. gallop, and elevated "V" wave on pulmonary arte ...
... outputs by the two methods were related: 3.50 ± 1.09 L/min by CO2 rebreathing and 4.23 ± 1.17 L/min by the standard dye-dilution or Fick methods (r = 0.52). In five patients with mitral regurgitation (diagnosed by typical apical holosystolic murmur, S. gallop, and elevated "V" wave on pulmonary arte ...
Current burden of sudden cardiac death: Multiple source
... Despite recent advances in resuscitation science, survival from cardiac arrest remains low, and sudden cardiac death (SCD) is a major public health issue. However, the magnitude of SCD in the general population still remains unknown. Estimates of the annual incidence of SCD in the U.S. range from 18 ...
... Despite recent advances in resuscitation science, survival from cardiac arrest remains low, and sudden cardiac death (SCD) is a major public health issue. However, the magnitude of SCD in the general population still remains unknown. Estimates of the annual incidence of SCD in the U.S. range from 18 ...
Left Ventricular Untwisting Is an Important Determinant of Early
... Melbourne, Victoria, Australia. Dr. Burns is supported by a Postgraduate Research Scholarship from the National Heart Foundation of Australia. ...
... Melbourne, Victoria, Australia. Dr. Burns is supported by a Postgraduate Research Scholarship from the National Heart Foundation of Australia. ...
Resistance With Elevated Pulmonary Vascular Evaluation of
... quired The use of NO for evaluation of heart transplant candidates with pulmonary hypertension has been described previously not only by us8 but also by ...
... quired The use of NO for evaluation of heart transplant candidates with pulmonary hypertension has been described previously not only by us8 but also by ...
How€to€Report€a€Coronary€CT€Angiography
... CT Angiography of the coronaries with and without contrast was performed using a 16/32/40/64/128/256-detector CT scanner. Axial images were obtained from the level of the subclavian artery/aortic arch/ascending aorta through to the diaphragm at 0.6 collimation mm section thickness during breath hold ...
... CT Angiography of the coronaries with and without contrast was performed using a 16/32/40/64/128/256-detector CT scanner. Axial images were obtained from the level of the subclavian artery/aortic arch/ascending aorta through to the diaphragm at 0.6 collimation mm section thickness during breath hold ...
Akt1–Mediated Skeletal Muscle Growth Attenuates Cardiac
... Satoshi Araki, MD; Yasuhiro Izumiya, MD, PhD; Shinsuke Hanatani, MD; Taku Rokutanda, MD; ...
... Satoshi Araki, MD; Yasuhiro Izumiya, MD, PhD; Shinsuke Hanatani, MD; Taku Rokutanda, MD; ...
PhD thesis
... Besides multicenter randomized clinical trials, multi- and single-center registries are also important sources for providing real-world information on CRT. It is well-known, that patients with NYHA class IV and inotropes, those with severe renal dysfunction, or on dialysis, those who are having coe ...
... Besides multicenter randomized clinical trials, multi- and single-center registries are also important sources for providing real-world information on CRT. It is well-known, that patients with NYHA class IV and inotropes, those with severe renal dysfunction, or on dialysis, those who are having coe ...
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.