Vascular Pathophysiology in Response to Increased Heart Rate
نویسندگان
چکیده
منابع مشابه
Increased heart rate in high-risk hypertensives related to increased heart failure and sudden death
High-risk hypertensives with a heart rate above 80 beats per minute (bpm) have an increased risk of cardiovascular events, particularly heart failure and sudden death, according to a new analysis of the Valsartan Anti-hypertensive Longterm Use Evaluation (VALUE) trial, presented at the 2010 American Society of Hypertension congress (ASH). Both baseline and in-trial tachycardia, measured every y...
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The purpose of this article is to discuss the relationship between sympathovagal dysfunction and the occurrence of paroxysmal atrial fibrillation. Onset of atrial fibrillation is subject to circadian variation; shorter episodes occur more frequently during the day, whereas longer episodes occur less frequently at night. Vagally mediated atrial fibrillation typically is preceded by bradycardia, ...
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The objective was to establish whether an intravascular volume increase leads to a heart rate (HR) increase without increased sympathetic tonus. HR changes at rest and at deep breathing (6/min - simulated increase of atrial filling pressure) were measured in patients after heart transplantation. Evaluation of dependency of HR changes on breathing depth was done through a new time series methodo...
متن کاملSpeed of Heart Rate Recovery in Response to Orthostatic Challenge.
RATIONALE Speed of heart rate recovery (HRR) may serve as an important biomarker of aging and mortality. OBJECTIVE To examine whether the speed of HRR after an orthostatic maneuver (ie, active stand from supine position) predicts mortality. METHODS AND RESULTS A longitudinal cohort study involving a nationally representative sample of community-dwelling older individuals aged ≥50 years. A t...
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the present study aimed to assess changes in resting and maximum heart rates as primary indicators of cardiac autonomic function in metabolic syndrome (mets) patients and to determine their value for discriminating mets from non-mets. 468 participants were enrolled in this cross-sectional study and assessed according to the updated adult treatment panel iii (atp-iii) definition of mets. resting...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2010
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2010.09.014