Beta-Blocker Use Is Associated With Impaired Left Atrial Function in Hypertension Hypertension

BackgroundImpaired left atrial (LA) mechanical function is present in hypertension and likely contributes to various complications, including atrial arrhythmias, stroke, and heart failure. Various antihypertensive drug classes exert differential effects on central hemodynamics and left ventricular function. However, little is known about their effects on LA function.Methods and ResultsWe studied 212 subjects with hypertension and without heart failure or atrial fibrillation. LA strain was measured from cine steady‐state free‐precession cardiac MRI images using feature‐tracking algorithms. In multivariable models adjusted for age, sex, race, body mass index, blood pressure, diabetes mellitus, LA volume, left ventricular mass, and left ventricular ejection fraction, beta‐blocker use was associated with a lower total longitudinal strain (standardized β=−0.21; P=0.008), and lower LA expansion index (standardized β=−0.30; P
Source: JAHA:Journal of the American Heart Association - Category: Cardiology Authors: Tags: Atrial Fibrillation, Hypertension, Magnetic Resonance Imaging (MRI) Original Research Source Type: research

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Atrial fibrillation (AF) constitutes the most common, major cardiac arrhythmia worldwide, with an estimated prevalence in the United States equal to 2.3 million affected subjects, projected to increase to 5.6 million by 2050.1 Hypertension and background heart disease (mainly, congestive heart failure) or valve disease represent main risk factors for AF development.1 Other modifiable risk factors are sedentary lifestyle, smoking, obesity, diabetes mellitus, and obstructive sleep apnea.2 AF is associated with a significant increase in the risk for all-cause and cardiovascular death, ischemic stroke, heart failure (HF), isch...
Source: The American Journal of Cardiology - Category: Cardiology Authors: Source Type: research
CONCLUSIONS: Despite high risk profile of patients in this registry, use of OAC was suboptimal, whereas antiplatelets were used in nearly half of patients. A relatively high rate of annual mortality and hospitalization was observed in patients with NVAF in Kerala AF Registry.PMID:33714410 | DOI:10.1016/j.ihj.2020.11.152
Source: Indian Heart J - Category: Cardiology Authors: Source Type: research
Abstract Atrial fibrillation (AF) is the most common arrhythmia in clinical practice. Several conventional and novel predictors of AF development and progression (from paroxysmal to persistent and permanent types) have been reported. The most important predictor of AF progression is possibly the arrhythmia itself. The electrical, mechanical and structural remodeling determines the perpetuation of AF and the progression from paroxysmal to persistent and permanent forms. Common clinical scores such as the hypertension, age ≥ 75 years, transient ischemic attack or stroke, chronic obstructive pulmonary disease, and...
Source: World Journal of Cardiology - Category: Cardiology Authors: Tags: World J Cardiol Source Type: research
The association of atrial fibrillation (AF) with ischemic stroke has long been recognized; yet, the pathogenic mechanisms underlying this relationship are incompletely understood. Clinical schemas, such as the CHA2DS2-VASc (congestive heart failure, hypertension, age ≥75 years, diabetes mellitus, stroke/transient ischemic attack, vascular disease, age 65 to 74 years, sex category) score, incompletely account for thromboembolic risk, and emerging evidence suggests that stroke can occur in patients with AF even after sinus rhythm is restored. Atrial fibrosis correlates with both the persistence and burden of AF, and ...
Source: Journal of the American College of Cardiology - Category: Cardiology Source Type: research
More News: Arrhythmia | Atrial Fibrillation | Beta-Blockers | Cardiology | Diabetes | Diabetes Mellitus | Endocrinology | Heart | Heart Failure | Hypertension | MRI Scan | Stroke