Abstract
1. 1. Central venous pressure was measured in 11 psychiatric patients during a period of electroshock and for several minutes afterward. Nine patients had electroshock for a duration of 5 seconds or less. Two patients were given electroshock on two different occasions for durations of 60 to 90 seconds. 2. 2. Of the 9 patients who had electroshock for 5 seconds or less, 8 had increases in central venous pressure. The mean rise in central venous pressure was 5.4±2.4 mm. Hg. The 2 patients who had electroshock for 60 to 90 seconds had increases in central venous pressure in all four instances. The mean increase in central venous pressure was 13.0±3.1 in these 2 patients. 3. 3. The time course of the rise in central venous pressure following stimulation of the autonomic nervous system by electroshock indicates that the rise in pressure is at least partially mediated by reflex action.
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