Longitudinal age-related changes in 24-hour total heart beats and premature beats and their relationship in healthy elderly subjects.

The aim of this study was to conduct a longitudinal follow-up on age-related changes in 24-hour total heart beats (THBs) and total premature beats and their correlations in healthy elderly subjects. In 15 healthy elderly subjects (mean age, 70.0 +/- 4.

Long-Term follow-up of the circadian rhythm of heart rate and heart rate variability in healthy elderly patients.

Background: The long-term age-related changes in circadian rhythm of heart rate variability (HRV), that is, autonomic nervous activity, remain unknown in elderly people.

Methods And Results: Holter monitoring was conducted twice at an interval of 15 years in 15 healthy elderly patients (age: 70.0 +/- 4.

[Comparison of clinical characteristics between elderly and young patients with bradycardia less than 80,000 beats per 24 hours].

Few researchers have conducted 24-hour total heart beat (THB) studies in patients with bradycardia, and its prevalence and significance in the elderly remain controversial. The aim of this study was to compare of distribution of THB, underlying diseases and effects of medication on THB in inpatients with bradycardia less than 80,000 beats/24 hrs between elderly and young patients. There were 303 Holter monitorings of bradycardia out of 7,687 consecutive monitorings, with only the earliest monitoring registered when duplicating.

Extended distribution of prolonged and fractionated right atrial electrograms predicts development of chronic atrial fibrillation in patients with idiopathic paroxysmal atrial fibrillation.

Introduction: This study evaluates whether electrophysiologic abnormalities in patients with idiopathic paroxysmal atrial fibrillation (PAF) predict the transition to chronic atrial fibrillation (CAF).

Methods And Results: Ninety-six patients with idiopathic PAF underwent electrophysiologic study and were followed up. During electrophysiologic study, endocardial mapping was performed at 12 sites in the right atrium (four aspects of the high, middle, and low right atrium).