NDLI: Heart rate decline after exercise as an index of autonomic balance after myocardial infarction

Content Provider	IEEE Xplore Digital Library
Author	Odemuyiwa, O. Murgatroyd, F. Staunton, A. Farrell, T. Malik, M.
Copyright Year	1992
Description	Author affiliation: Dept. of Cardiological Sci., St. George's Hospital Med. Sch., London, UK (Odemuyiwa, O.; Murgatroyd, F.; Staunton, A.; Farrell, T.; Malik, M.)
Abstract	To determine whether exercise testing may provide a simple means of assessing vagal reserve, the relationship between heart rate deceleration after exercise and baroreflex sensitivity (BRS) was studied in 94 patients, in whom BRS measurement and exercise testing were performed prior to discharge from hospital after acute myocardial infarction. The heart rate during exercise and the first 5 min after exercise was plotted and the rate of decline in heart rate (dr/dt) was calculated from the slope of the rapid, early recovery phase of this curve. Log (BRS) and square root (dr/dt) were calculated. Log (BRS) correlated directly with exercise duration, but did not with dr/dt and square root (dr/dt). Log (BRS) correlated with the product of exercise duration (ED) and square root (dr/dt), particularly in patients aged <60 years. Stepwise multiple regression yielded a formula for Log (BRS). Heart rate recovery after treadmill exercise testing may provide a simple way of assessing autonomic function after myocardial infarction.<>
Starting Page	395
Ending Page	398
File Size	355134
Page Count	4
File Format	PDF
ISBN	0818635525
DOI	10.1109/CIC.1992.269347
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-10-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heart rate Myocardium Testing Blood pressure Hospitals Baroreflex Medical tests Aging Cardiology Performance evaluation
Content Type	Text
Resource Type	Article

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