Assessment of vagal control of the heart in diabetes. Measures of R-R interval variation under different conditions. Issue 1 (January 1977)

• Record Type: Journal Article
• Authors: Bennett, T; Fentem, P H; Fitton, D; Hampton, J R; Hosking, D J; Riggott, P A
• Is Part Of: Heart. Volume 39:Issue 1(1977)
• Page Start: 25
• Page End: 28
• Publication Date: 1977-01
• Subjects: Heart -- Diseases -- Treatment -- Periodicals; Cardiology -- Periodicals; 616.12
• DOI: 10.1136/hrt.39.1.25
• Languages: English
• ISSNs: 1355-6037

Abstract

Abstract : R-R intervals and R-R interval variation were measured in 2 selected groups of diabetic subjects; 1 group was selected because vagal control of the heart appeared normal, the other group was selected because they lacked vagal control of the heart. The means of the R-R intervals for the 2 groups were not significantly different under various conditions (sleeping, lying, during deep breathing, sitting, standing, and during upright activity). The standard deviations of the R-R intervals for the 2 groups were only significantly different during deep breathing and upright activity. It is suggested that cardiac vagal function is not reliably assessed by measurement of R-R interval variation during quiet standing, but useful information may be obtained during deep breathing.