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2011 ACCF/AHA/HRS Focused Update on the Management of Patients With... Fibrillation (Updating the 2006 Guideline): A Report of the American...
2011 ACCF/AHA/HRS Focused Update on the Management of Patients With... Fibrillation (Updating the 2006 Guideline): A Report of the American...

... approved by a consensus of the members voting. Members who were recused from voting are noted on the title page of this document and in Appendix 1. Members must recuse themselves from voting on any recommendations to which their RWI apply. Any writing group member who develops a new RWI during his o ...
European Heart Rhythm Association/Heart Failure Association joint
European Heart Rhythm Association/Heart Failure Association joint

... Various pathophysiological mechanisms operating in HF create potent arrhythmogenic substrates, triggers, and modulators, which facilitate the development of cardiac arrhythmias in HF patients. Thus, such patients may also experience focal atrial tachycardias (ATs) or atrial macroreentrant arrhythmia ...
Multimodal functional cardiac MRI in creatine kinase
Multimodal functional cardiac MRI in creatine kinase

... MULTIMODAL CARDIAC MRI IN CREATINE KINASE DEFICIENT MICE ...
Diastolic Heart Failure: A Concise Review
Diastolic Heart Failure: A Concise Review

... and preserved EF may have relatively small but detectable abnormalities in systolic function. For this reason the terms HF with preserved systolic function should not be used. However, there are no convincing data to support the idea that abnormalities in contractility are responsible for the sympto ...
PERSPECTIVE
PERSPECTIVE

... (B) five single EHT rings on a custom-made device facilitated fusion; (C) fusion resulted in synchronous contraction of multiloop EHTs; (D) sutures fixed to multiloop EHTs were sewn on the recipients' hearts. Reprinted with permission from ref 8. Copyright 2006 Nature Publishing Group. (E) Macroscopic ...
Acute Rheumatic Fever and Rheumatic Heart Disease
Acute Rheumatic Fever and Rheumatic Heart Disease

...  Shortness of breath Abnormal body movements or twitches  Rapid heartbeat (chorea) ...
morphological study of coronary sinus in human cadaveric
morphological study of coronary sinus in human cadaveric

... vein and middle cardiac vein are the 2 most consistently present tributaries of coronary sinus [11]. The great cardiac vein has been reported to vary considerably in its course [12,13]. Lateral and posterior venous branches are seen in <50% of human heart unlike the great cardiac vein and middle car ...
Left Ventricular Assist Device Management in the ICU
Left Ventricular Assist Device Management in the ICU

... function to overall output and valvular function (44). support and persists after heart transplant as well (11, 48). In the immediate postoperative period, hemodynamic Milrinone reduces pulmonary artery pressures and pulmanagement is based on determination of MAP, cardiac monary vascular resistance ...
Arterial - Todo Corazón de Murcia
Arterial - Todo Corazón de Murcia

... patients, aged 4 to 9 years (mean 6 SD 5.6 6 1.5), participated in the study. There were 40 boys and 10 girls. All children were within the fifth and the 95th percentiles for height and weight. All procedures were explained in detail to both children and parents who had agreed to take part in the st ...
Journal of Exercise Physiologyonline
Journal of Exercise Physiologyonline

... stimulus. The prescribed intensity fraction can be alternatively applied using an absolute or relative approach. Absolute intensity is to prescribe a workload, such as 80 Watts on a cycle ergometer or a set caloric expenditure in a set time period (1). In this approach to intensity prescription, eac ...
Anomalous Origin of Left Main Coronary Artery from Right Sinus of
Anomalous Origin of Left Main Coronary Artery from Right Sinus of

... with complaint of chest heaviness. He sought medical attention when his chest discomfort did not abate even after seven days. His past medical history included medically controlled diabetes and hypertension. On general physical examination patient was seen to be anxious, his heart rhythm was regular ...
Cardiovascular System
Cardiovascular System

... Blood Flow through the Heart The right atrium receives deoxygenated blood from the superior and inferior vena cavae. During contraction of the atrium, blood moves into the right ventricle through the tricuspid valve. Once the right ventricle is filled with blood, this chamber contracts, pumping bloo ...
Diagnosis of Cardiac Tamponade.
Diagnosis of Cardiac Tamponade.

... Pericardial effusion is rarely diagnosed based on physical findings. In contrast, pericardial tamponade can be diagnosed based on clinical criteria, but specific clinical signs are often absent. Particularly in the setting of acute hemorrhagic tamponade, the time from the first signs of tamponade to ...
MRI assessment of LV relaxation by untwisting rate
MRI assessment of LV relaxation by untwisting rate

... appendage with a purse-string suture. A LV catheter was placed through cannulation of the left internal carotid artery. An aortic catheter was inserted through cannulation of the left femoral artery. After surgical preparation, the animal was allowed to stabilize for 30 min. Throughout the experimen ...
on the tricuspid valve. Though infective in diagnosing - Heart
on the tricuspid valve. Though infective in diagnosing - Heart

... This girl probably had had infective endocarditis for over a year. Turbulence over the tricuspid valve caused by the increased flow could account for the site of the vegetations on the tricuspid valve. Though infective endocarditis is a known complication of congenital coronary arteriovenous fistula ...
Sympathetic and cardiac baroreflex function in panic disorder
Sympathetic and cardiac baroreflex function in panic disorder

... burst strength and amplitude has previously been observed [32]. Indeed, Kienbaum et al. [31] postulated that the baroreflex mechanisms regulating the incidence and strength of sympathetic bursts are not identical and suggested that the modulation of each occurs at two sites within the central nervou ...
Noninvasive Pacing
Noninvasive Pacing

Printable PDF - The Gross Physiology of the Cardiovascular System
Printable PDF - The Gross Physiology of the Cardiovascular System

... records of the arterial and venous pressures equalizing, obtained during short periods of cardiac arrest of patients in coronary care settings, in emergency rooms, or in operating rooms during heart surgery. Even in these situations, the resulting pressure can be regarded as only an approximation, a ...
Hereditary ATTR Thr60Ala Amyloidosis
Hereditary ATTR Thr60Ala Amyloidosis

... Symptoms usually appear between ages 45 and 80, most often after age 60. It is slightly more common in men than in women. Until recently most people with ATTR amyloidosis affecting the heart, so called amyloid cardiomyopathy, were probably misdiagnosed as having heart disease due to other, more comm ...
Diabetic Cardiomyopathy: From Pathophysiology to Treatment
Diabetic Cardiomyopathy: From Pathophysiology to Treatment

... aggravated by a defect in the heart itself, and (2) secondary cardiomyopathy, where cardiac performance is affected because of a systemic syndrome.11 Cardiomyopathy leads to heart failure, which can be either diastolic heart failure, with preserved ejection fraction, or systolic heart failure, with ...
Structural and Functional Characteristics of Rat Hearts with and
Structural and Functional Characteristics of Rat Hearts with and

... Doppler basal line. The left ventricular isovolumetric relaxation interval was estimated as the time (ms) between the end of the flow curve of the left ventricular outflow tract and the beginning of the velocity curve of the mitral diastolic flow. These parameters were used for analyzing left ventri ...
Upregulation of eNOS and unchanged energy metabolism in
Upregulation of eNOS and unchanged energy metabolism in

... removal of the heart, blood samples were taken from the chest cavity and immediately centrifuged, and the supernatant was kept on ice for determination of plasma glucose and free fatty acids (FFAs). Hearts were cannulated and perfused in the Langendorff mode at constant pressure as described previou ...
Pediatric Cardiology Outcomes Report
Pediatric Cardiology Outcomes Report

... not connect normally to the left atrium. Her heart was obstructed and dangerously enlarged. She would need surgery urgently to repair the defect. Kim and Doug struggled to digest the news. “We were relieved to have an explanation, but also panic stricken,” Kim recalls. “We had no idea what lay ahead ...
Pharmacology and the Nursing Process, 4th ed. Lilley/Harrington
Pharmacology and the Nursing Process, 4th ed. Lilley/Harrington

... Copyright © 2014 by Mosby, an imprint of Elsevier Inc. ...
Gross differenteriation [sic] of the heart in the bovine and human
Gross differenteriation [sic] of the heart in the bovine and human

... dependent on the position of the anterior papillary muscle of the right ventricle. In function the ...
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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.
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