Circadian variation of heart rate variability and the rate of autonomic change in the morning hours in healthy subjects and angina patients.

• Incidence of sudden cardiac death peaks during the early morning hours when there is a rapid withdrawal of vagal and an increase of sympathetic tone. The rate of autonomic change could be of prognostic importance.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine (hsv//eng)

Keyword

Adrenergic beta-Antagonists

pharmacology

Adult

Aged

Aged

80 and over

Angina Pectoris

physiopathology

Aortic Bodies

drug effects

physiology

Autonomic Nervous System

drug effects

physiology

Circadian Rhythm

drug effects

physiology

Electrocardiography

Ambulatory

Female

Heart Rate

drug effects

physiology

Humans

Isosorbide Dinitrate

analogs & derivatives

pharmacology

Male

Metoprolol

pharmacology

Middle Aged

Reference Values

Vasodilator Agents

pharmacology

Publication and Content Type

ref (subject category)

art (subject category)