Action of Human Plasma on the Isolated Frog Heart
Observations on Subjects with and without Essential Hypertension
Plasma samples from certain patients affect the staircase phenomenon of the frog heart. Comparison of 3 groups of subjects, normal controls, patients without essential hypertension, and patients with severe essential hypertension shows that plasmas from the last group generally abolish the staircase, whereas plasmas of the other 2 groups exhibit little or no such activity.
- Received February 8, 1957.
- © 1957 American Heart Association, Inc.