Short- and Long-term Effects
Pulse rates taken at rest and after effort were significantly
lower than those taken after operation, and the blood pressure
response to exercise was blunted. ECG tracings showed a sig-
nificant change in the electrical frontal plane axis and shortening
of the QTc interval.
Tel-Hashomer, and Tel Aviv University Sackler Medical
School, Tel Aviv, Israel, and the National Heart,
Lung, Blood Institute, National Institutes of Health,t Bethesda, Maryland