STUDIES on the effects of electroshock therapy on the circulation were made ^ in 1943 by Gordh and Silfverskiöld1 and by Silfverskiöld and Åmark.2 They showed that electroshock therapy produced a considerable rise in the arterial blood pressure and a marked Valsalva effect, with a resulting rise in the venous pressure. Silfverskiöld and Åmark noted a rise in the arterial pressure of 80 to 120 mm. Hg. The venous pressure sometimes rose as high as 100 mm. Hg, or higher.
Altschule and associates3 recorded a mean rise in the venous pressure of 42 mm. Hg in connection with electroshock therapy. Brown and associates * made recordings in dogs, monkeys, and human subjects during electroshocks. They demonstrated an initial fall in the blood pressure and the heart rate; it was followed, after about one second, by a rise above the basic values. In human subjects the systolic pressure rose on
HOLMBERG G, THESLEFF S, VON DARDEL O, HARD G, RAMQVIST N, PETTERSSON H. CIRCULATORY CONDITIONS IN ELECTROSHOCK THERAPY WITH AND WITHOUT A MUSCLE RELAXANT. AMA Arch NeurPsych. 1954;72(1):73–79. doi:https://doi.org/10.1001/archneurpsyc.1954.02330010075005
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