𝔖 Bobbio Scriptorium
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The effects of stress on left ventricular ejection fraction

✍ Scribed by Marla C. Kiess; Joel E. Dimsdale; Richard H. Moore; Peter Liu; John Newell; Martha Barlai-Kovach; Charles A. Boucher; H. William Strauss

Publisher
Springer
Year
1988
Tongue
English
Weight
715 KB
Volume
14
Category
Article
ISSN
0340-6997

No coin nor oath required. For personal study only.

✦ Synopsis

The left ventricular ejection fraction (EF) was studied in 17 healthy volunteers with a new ambulatory left ventricular function monitor. Heart rate, EF, and blood pressure measurements were made during rest, a psychiatric stress interview, cold exposure, exercise, and eating. An increase in EF was seen during emotional stress (from 0.45 +/- 0.09 to 0.51 +/- 0.13, P less than 0.001). This increase was comparable to that observed during exercise (0.52 +/- 0.14) and eating (0.52 +/- 0.10, P less than 0.001). In contrast, cold exposure caused a decrease in EF (0.43 +/- 0.13, P less than 0.05). These observations demonstrate the powerful hemodynamic consequences of common behaviors as well as the utility and feasibility of studying such behavioral factors in ambulatory subjects.

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