| Literature DB >> 556668 |
T Bennett, P H Fentem, D Fitton, J R Hampton, D J Hosking, P A Riggott.
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.Entities:
Mesh：
Year: 1977 PMID： 556668 PMCID： PMC483189 DOI： 10.1136/hrt.39.1.25
Source DB: PubMed Journal: Br Heart J ISSN： 0007-0769