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The pain-relieving effect of transcutaneous electrical nerve stimulation (TENS) was studied in 10 male patients with angina pectoris of functional class III or IV. All patients had been stabilized on long-term maximal oral treatment for at least six months. The effects of the TENS treatment were measured by means of repeated bicycle ergometer tests. All patients had an increased working capacity (16–85%) and decreased ST depression and reduced recovery time during TENS. No adverse effects were observed.
Mannheimer et al. (Sun,) studied this question.