After prostatic massage, some patients exhibit mild or marked vasomotor collapse which in a few instances terminates in syncope. In all cases there is a definite latent period. This observation stimulated our curiosity to determine what physiologic vasomotor changes were associated with prostatic massage and whether it could be correlated with any specific lesion. We decided to use responses of blood pressure and pulse rate as a guide to measure these changes, noting also the effect of posture. Observations were made on a series of 378 unselected patients as they presented themselves for examination.
To standardize the procedure as completely as possible, each patient was allowed a period of rest in order to establish a basal level of blood pressure as a control. All control readings were taken with the patient in the sitting position. The procedure then was explained carefully to the patient in order to exclude the factor
HAMMER HJ, SCHULTE TL. CHANGES IN BLOOD PRESSURE PRODUCED BY PROSTATIC MASSAGE. JAMA. 1938;111(4):308–309. doi:10.1001/jama.1938.02790300018006
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