Why is Regression of Left Ventricular Hypertrophy Convenient? QCVC Committees
... Regression of ventricular hypertrophy and sudden death In some studies carried out by our group, we have been able to identify, in an objective way a linear, positive, continuous and statistically significant correlation between the left ventricular mass index corrected by body surface or by height ...
... Regression of ventricular hypertrophy and sudden death In some studies carried out by our group, we have been able to identify, in an objective way a linear, positive, continuous and statistically significant correlation between the left ventricular mass index corrected by body surface or by height ...
NIH Public Access - Pensiero Critico
... preventing heart disease in the local population. Ultimately, given the paucity of effective interventions, the former approach won favor. Within a few months of the first examination, the newly-established National Heart Institute assumed control of the study.15 p1c-2 Gilcin Meadors was responsible ...
... preventing heart disease in the local population. Ultimately, given the paucity of effective interventions, the former approach won favor. Within a few months of the first examination, the newly-established National Heart Institute assumed control of the study.15 p1c-2 Gilcin Meadors was responsible ...
283 Cardiac Tamponade
... Investigations of cardiac tamponade are largely non-invasive and can be performed at the bedside. Simple investigations Features of tamponade present on chest radiograph and ECG are relatively non-specific and do not distinguish between pericardial effusion and tamponade. Fluid in the pericardial sa ...
... Investigations of cardiac tamponade are largely non-invasive and can be performed at the bedside. Simple investigations Features of tamponade present on chest radiograph and ECG are relatively non-specific and do not distinguish between pericardial effusion and tamponade. Fluid in the pericardial sa ...
Troponin I, cardiac diastolic dysfunction and restrictive
... a myocardial cell, calcium is released from the sarcoplasmic reticulum and becomes available to the myofilaments. Calcium binds to a regulatory calcium site on the troponin complex, the TnC subunit. The presence of calcium at this site is known to result in a change in affinity of TnC for TnI, and t ...
... a myocardial cell, calcium is released from the sarcoplasmic reticulum and becomes available to the myofilaments. Calcium binds to a regulatory calcium site on the troponin complex, the TnC subunit. The presence of calcium at this site is known to result in a change in affinity of TnC for TnI, and t ...
Recent progress in AQUINAS: a knowledge acquisition workbench
... Xerox family of Lisp machines. Subsets of AQUINAS also run in an Interlisp ...
... Xerox family of Lisp machines. Subsets of AQUINAS also run in an Interlisp ...
Excessive vasoconstriction in rheumatic mitral stenosis with
... or group II (ejection fraction CO.55).The mean age of the patients was 29 2 7 years (range 11 to 38) in group I and 26 4 9 (range 14 to 40) in group II (p = NS). The mean body surface area was 1.63 P 0.17 m’ in group I and 1SO t 0.15 m* in group II (p = NS). The 16 female patients were equally divid ...
... or group II (ejection fraction CO.55).The mean age of the patients was 29 2 7 years (range 11 to 38) in group I and 26 4 9 (range 14 to 40) in group II (p = NS). The mean body surface area was 1.63 P 0.17 m’ in group I and 1SO t 0.15 m* in group II (p = NS). The 16 female patients were equally divid ...
Imaging Guidelines for Nuclear Cardiology
... 6. Beat selection. A hard copy of the time-activity curve should be generated by the technologist during processing so one may confirm that the appropriate beats have been selected for inclusion in the representative cycle. Unless the number of beats is very limited, one should preferably select bea ...
... 6. Beat selection. A hard copy of the time-activity curve should be generated by the technologist during processing so one may confirm that the appropriate beats have been selected for inclusion in the representative cycle. Unless the number of beats is very limited, one should preferably select bea ...
Left ventricular long-axis diastolic function is
... In order to determine left ventricular global and regional myocardial functional reserve in endurance-trained and strength-trained athletes, and to identify predictors of exercise capacity, we studied 18 endurance-trained and 11 strength-trained athletes with left ventricular hypertrophy (172p27 and ...
... In order to determine left ventricular global and regional myocardial functional reserve in endurance-trained and strength-trained athletes, and to identify predictors of exercise capacity, we studied 18 endurance-trained and 11 strength-trained athletes with left ventricular hypertrophy (172p27 and ...
Elevated circulating cardiotrophin-1 in heart failure
... expression may be induced by myocyte stretch. Indeed, mechanical stretch activates the JAK\STAT pathway and augments expression of CT-1 mRNA in rat cardiomyocytes [21]. It is intuitive to propose that the initial secretion of CT-1 following ischaemic embarrassment may be adaptive via : (i) cytoprote ...
... expression may be induced by myocyte stretch. Indeed, mechanical stretch activates the JAK\STAT pathway and augments expression of CT-1 mRNA in rat cardiomyocytes [21]. It is intuitive to propose that the initial secretion of CT-1 following ischaemic embarrassment may be adaptive via : (i) cytoprote ...
Normal Exercise Capacity in Patients with Severe Left Ventricular
... 3 mm Hg) without dyspnea, ventricular dilation, and increased levels of plasma norepinephrine at rest and during exercise. Also, whereas peripheral vascular resistance was unchanged during supine exercise, it decreased by 50% during similar levels of upright exercise. As a consequence, increases in ...
... 3 mm Hg) without dyspnea, ventricular dilation, and increased levels of plasma norepinephrine at rest and during exercise. Also, whereas peripheral vascular resistance was unchanged during supine exercise, it decreased by 50% during similar levels of upright exercise. As a consequence, increases in ...
Transseptal catheterization via right subclavian vein
... transseptal puncture and include aortic puncture, pericardial entry, haemopericardium, and systemic embolism from dislodgement of F I G . 3 Transseptal catheter in situ. The left atrial thrombus. None of these complica- catheter passes from the right subclavian vein tions has occurred in this series ...
... transseptal puncture and include aortic puncture, pericardial entry, haemopericardium, and systemic embolism from dislodgement of F I G . 3 Transseptal catheter in situ. The left atrial thrombus. None of these complica- catheter passes from the right subclavian vein tions has occurred in this series ...
THE RELATIONSHIP BETWEEN REGIONAL INTEGRATED
... different phases of the cardiac cycle. The rapid onset of motion induced by myocardial contraction was associated with an initial increase in reflectivity. This was immediately followed by a progressive decrease in reflectivity during mid to late systole which reached a minimum around end-systole. T ...
... different phases of the cardiac cycle. The rapid onset of motion induced by myocardial contraction was associated with an initial increase in reflectivity. This was immediately followed by a progressive decrease in reflectivity during mid to late systole which reached a minimum around end-systole. T ...
Patient pacemaker information
... A pacemaker consists of a pulse generator (pacemaker box), which sits under the skin in the upper chest, and either one or two electrode leads that sit inside the heart. The pacemaker box contains the power supply (battery), electronic circuit and specialised software and memory in order to monitor ...
... A pacemaker consists of a pulse generator (pacemaker box), which sits under the skin in the upper chest, and either one or two electrode leads that sit inside the heart. The pacemaker box contains the power supply (battery), electronic circuit and specialised software and memory in order to monitor ...
Ventricular Arrhythmias in Adult Aortic Stenosis
... healed myocardial infarction or in ventricular hyper¬ trophy.the development of connective tissue septa within myocardial cells and bundles decreases the electrical coupling of adjacents groups of parallel fibers changing the anisotropic structure from uni¬ form to nonuniform. Spach et al34 document ...
... healed myocardial infarction or in ventricular hyper¬ trophy.the development of connective tissue septa within myocardial cells and bundles decreases the electrical coupling of adjacents groups of parallel fibers changing the anisotropic structure from uni¬ form to nonuniform. Spach et al34 document ...
Heart Failure and Circulatory Shock
... The heart has the amazing capacity to adjust its pumping ability to meet the varying needs of the body. During sleep, its output declines, and during exercise, it increases markedly. The ability to increase cardiac output during increased activity is called the cardiac reserve. For example, competit ...
... The heart has the amazing capacity to adjust its pumping ability to meet the varying needs of the body. During sleep, its output declines, and during exercise, it increases markedly. The ability to increase cardiac output during increased activity is called the cardiac reserve. For example, competit ...
ICSP_IuliaMirea_2016_V9_finale
... resolutions but suffer from distortions due to cutting thin samples [5]. Although these techniques yield important 2D morphological information, they are not fully adapted to reconstruct complex 3D microstructures that can be resliced and reoriented with much more details. 3D techniques such as pola ...
... resolutions but suffer from distortions due to cutting thin samples [5]. Although these techniques yield important 2D morphological information, they are not fully adapted to reconstruct complex 3D microstructures that can be resliced and reoriented with much more details. 3D techniques such as pola ...
Biventricular Mural Thrombi in Patients With Dilated
... The management of these patients mostly remains conservative, but surgical thrombectomy has been described along with myocardial revascularization. Patients with large LV apical aneurysms with thrombi and those who have refractory heart failure symptoms despite optimal medical therapy benefit from s ...
... The management of these patients mostly remains conservative, but surgical thrombectomy has been described along with myocardial revascularization. Patients with large LV apical aneurysms with thrombi and those who have refractory heart failure symptoms despite optimal medical therapy benefit from s ...
Atrial Fibrillation - A Guide for Patients and Families
... The impulse then travels down to the atrioventricular (AV) node which is like a wire that connects it to the ventricles. The AV node splits into two branches, the left bundle branch and the right bundle branch. From the AV node, the impulse spreads through the bundle branches allowing the even spre ...
... The impulse then travels down to the atrioventricular (AV) node which is like a wire that connects it to the ventricles. The AV node splits into two branches, the left bundle branch and the right bundle branch. From the AV node, the impulse spreads through the bundle branches allowing the even spre ...
Heart Failure with Preserved Left Ventricular Systolic Function (HF
... The prevalence of both types of CHF increased with age. The proportion of patients with PSF ranged from 40% to 71% (with a mean of 56%) and was probably influenced by the method used to assess LV systolic function and the threshold dividing “preserved” from “reduced.” For example, FS measures systol ...
... The prevalence of both types of CHF increased with age. The proportion of patients with PSF ranged from 40% to 71% (with a mean of 56%) and was probably influenced by the method used to assess LV systolic function and the threshold dividing “preserved” from “reduced.” For example, FS measures systol ...
Clinical Phenotypes in Heart Failure With Preserved Ejection Fraction
... Rohan Samson, MD; Abhishek Jaiswal, MD; Pierre V. Ennezat, MD; Mark Cassidy, MD; Thierry H. Le Jemtel, MD ...
... Rohan Samson, MD; Abhishek Jaiswal, MD; Pierre V. Ennezat, MD; Mark Cassidy, MD; Thierry H. Le Jemtel, MD ...
Correlation Between Exercise Electrocardiography Test and
... tests（Stress Test System ML-4500, Fukuda Denshi）having taken no medication on the day before cardiac catheterization. The Bruce protocol was used for the exercise test, and patients were considered positive if over 0.1 mV of a horizontal and downsloping, or over 0.2 mV of an upsloping ECG ST depress ...
... tests（Stress Test System ML-4500, Fukuda Denshi）having taken no medication on the day before cardiac catheterization. The Bruce protocol was used for the exercise test, and patients were considered positive if over 0.1 mV of a horizontal and downsloping, or over 0.2 mV of an upsloping ECG ST depress ...
The Macroanatomy of Coronary Arteries in the Iranian Native
... was single (100%). Its length ranged from 0.3 to 0.9 cm, with a mean of 0.63 cm. It terminated by forming the paraconal interventricular and circumflex branches (81.5%) or the paraconal, circumflex and diagonal interventricular branches (18.5%). The paraconal interventricular branch was located in t ...
... was single (100%). Its length ranged from 0.3 to 0.9 cm, with a mean of 0.63 cm. It terminated by forming the paraconal interventricular and circumflex branches (81.5%) or the paraconal, circumflex and diagonal interventricular branches (18.5%). The paraconal interventricular branch was located in t ...
Atrial Size Independently Correlates with the Development of
... of abnormal atriograms under right atrium mapping,(23) fragmentation of atrial activity elicited by premature stimulation and the vulnerability index.(9,10,24) Although these parameters seem to successfully differentiate patients with AF from those without it, they require invasive measurement and a ...
... of abnormal atriograms under right atrium mapping,(23) fragmentation of atrial activity elicited by premature stimulation and the vulnerability index.(9,10,24) Although these parameters seem to successfully differentiate patients with AF from those without it, they require invasive measurement and a ...
The Ethics of Defibrillators and End of Life Care
... The sole purpose of the ICD is to deliver a shock to the myocardium when it senses a lifethreatening arrhythmia in order to restore a stable rhythm. The effect of a shock and the incidence of shock (both appropriate and inappropriate) are critical in the understanding of how they can influence a pat ...
... The sole purpose of the ICD is to deliver a shock to the myocardium when it senses a lifethreatening arrhythmia in order to restore a stable rhythm. The effect of a shock and the incidence of shock (both appropriate and inappropriate) are critical in the understanding of how they can influence a pat ...
Causes of sudden death in competitive athletes
... We also examined at necropsy other young athletes with an unexplained increase in left ventricular mass (Fig. 4). Although each of these athletes had a hypertrophied, non• dilated left ventricle (heart weight 420 to 530 g; maximal wall thickness 16 to 23 mm), we considered these athletes to have' 'i ...
... We also examined at necropsy other young athletes with an unexplained increase in left ventricular mass (Fig. 4). Although each of these athletes had a hypertrophied, non• dilated left ventricle (heart weight 420 to 530 g; maximal wall thickness 16 to 23 mm), we considered these athletes to have' 'i ...
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.