Results 221 to 230 of about 167,118 (284)

Mitral Annular Dynamics in AF Versus Sinus Rhythm: Novel Insights Into the Mechanism of AFMR.

JACC Cardiovascular Imaging, 2021
OBJECTIVES This study aimed to investigate mitral annular dynamics in atrial fibrillation (AF) and after sinus rhythm restoration, and to assess the relationship between annular dynamics and mitral regurgitation (MR).
S. Deferm, P. Bertrand, D. Verhaert, F. Verbrugge, Jeroen Dauw, Kevin Thoelen, Alexander Giesen, L. Bruckers, F. Rega, James D. Thomas, R. Levine, P. Vandervoort   +11 more
semanticscholar   +1 more source

A phenomenology model of normal sinus rhythm in healthy humans

IEEE Transactions on Biomedical Engineering, 2002
The fractal component in the daytime healthy heartbeat interval data is studied from the perspective of cascade in fluid turbulence. Based on the electrophysiology of the heart muscle cell, a bounded random cascade model is assumed and the scaling property of the model is derived.
Der Chyan Lin, Richard Lee Hughson
openaire   +2 more sources

Accelerated conversion of atrial fibrillation to normal sinus rhythm by pulmonary delivery of flecainide acetate in a porcine model.

Heart Rhythm, 2018
BACKGROUND Pulmonary delivery of antiarrhythmic agents has the potential to increase rapidly targeted drug concentrations in pulmonary veins and left atrium to terminate atrial fibrillation (AF).
R. Verrier, A. L. Bortolotto, B. A. Silva, A. Marum, F. G. Stocco, E. Evaristo, V. Z. de Antonio, Anderson C. Silva, L. Belardinelli   +8 more
semanticscholar   +1 more source

Anticoagulation in patients with heart failure and normal sinus rhythm

American Journal of Health-System Pharmacy, 2009
The evidence evaluating the risk of thrombosis and the efficacy and risk of anticoagulation in patients with systolic heart failure (HF) and normal sinus rhythm is reviewed.Although a subject of investigation for over 50 years, use of anticoagulation in patients with HF remains an area of controversy and clinical debate.
Toni L, Ripley, Edith, Nutescu
openaire   +2 more sources

Digitalis tolerance during atrial fibrillation and normal sinus rhythm

The American Journal of Cardiology, 1967
Abstract In each of 9 normal dogs the toxic dose of acetylstrophanthidin was determined on three separate occasions during normal sinus rhythm and atrial fibrillation. During atrial fibrillation the mean toxic dose was 10 to 30 per cent (average 21%) greater than that recorded in the same animal during normal sinus rhythm.
R C, Elkins, J S, Vasko, A G, Morrow
openaire   +2 more sources

Hemodynamics in atrial flutter with spontaneous reversion to normal sinus rhythm

American Heart Journal, 1957
Abstract During cardiac catheterization of a 31-year-old woman with mitral stenosis, the development of atrial flutter and subsequent spontaneous reversion to normal sinus rhythm provided an opportunity to study the hemodynamic effects of the arrhythmia under ideally controlled conditions. The ventricular rate remained constant; no cardiac drugs were
P R, MAHRER, T, KILLIP, D S, LUKAS
openaire   +2 more sources

An artificial intelligence-enabled ECG algorithm for the identification of patients with atrial fibrillation during sinus rhythm: a retrospective analysis of outcome prediction.

The Lancet, 2019
BACKGROUND Atrial fibrillation is frequently asymptomatic and thus underdetected but is associated with stroke, heart failure, and death. Existing screening methods require prolonged monitoring and are limited by cost and low yield. We aimed to develop a
Z. Attia, P. Noseworthy, F. Lopez‐Jimenez, S. Asirvatham, A. Deshmukh, B. Gersh, R. Carter, Xiaoxi Yao, A. Rabinstein, Brad J Erickson, S. Kapa, P. Friedman   +11 more
semanticscholar   +1 more source

Normal Sinus Rhythm–Sinus Bradycardia is Common in Young Children Post-extracardiac Fontan

Pediatric Cardiology, 2016
We hypothesized that normal sinus rhythm-sinus bradycardia is common in young children following extracardiac Fontan. After excluding patients with sinus pauses, junctional rhythm, tachy-brady syndrome, frequent ectopics, or ectopic atrial rhythm, we found an ambulatory 24-h Holter monitor average heart rate of 78 ± 12 beats per minute (bpm) in 33 post-
William N, Evans, Ruben J, Acherman, Humberto, Restrepo   +2 more
openaire   +2 more sources

Normal sinus rhythm in advanced mitral valve disease.

Archives of internal medicine, 1969
Sixty-four patients with rheumatic mitral valve disease who had cardiac catheterization were studied with respect to rhythm, cardiac index, mitral valve gradient, pulmonary artery pressure, and age. They were divided into three groups: (1) moderately elevated pulmonary pressure and normal pulmonary vascular resistance, (2) high pulmonary pressure and ...
M A, Kaplan, D P, Parker, W, Aronow, N, Resnick   +3 more
openaire   +3 more sources

Normal sinus rhythm without the normal atrial kick

Heart Rhythm, 2005
Atrial fibrillation (AF) affects more than six million people in the United States alone. It is associated with palpitations, reduced exercise tolerance, and dyspnea. Hemodynamic impairment results from loss of synchronous atrial contraction and rapid, irregular ventricular rates. Thromboembolism and stroke are serious complications.
openaire   +1 more source