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R‐R variations, a test of autonomic dysfunction
Author(s) -
Persson A.,
Solders G.
Publication year - 1983
Publication title -
acta neurologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.967
H-Index - 95
eISSN - 1600-0404
pISSN - 0001-6314
DOI - 10.1111/j.1600-0404.1983.tb04577.x
Subject(s) - supine position , medicine , heart rate , heart rate variability , cardiology , pure autonomic failure , diaphragmatic breathing , breathing , autonomic function , autonomic nervous system , anesthesia , audiology , blood pressure , orthostatic vital signs , alternative medicine , pathology
‐ Beat‐to‐beat variation of the heart rate was studied as a test of autonomic function. Recordings were made during quiet breathing, deep breathing and tilting from supine to upright position. The heart rate variations were expressed as a % of mean R‐R interval. In order to establish normal criteria, the influence of age, wakefulness and intra‐individual variations was studied in healthy volunteers. A negative correlation with age was found for all measured parameters. Patients with diabetic polyneuropathy differed from age‐matched controls. Patients with symptoms of autonomic failure showed smaller variations than those without such symptoms.