Hypertension Following Extracorporeal Shock Wave Lithotripsy / 대한비뇨기과학회지

ABSTRACT

Hypertension has been reported as a possible sequela of extracorporeal shock wave lithotripsy. The detailed pre & post-ESWL blood pressure measurements were made for 1-21 months in 1159 patients who were treated with ESWL monotherapy using the EDAP-LT01 piezoelectric lithotriptor between February, 1987 and June, 1989. The following results were obtained 1. Among 1053 pre-ESWL normotensive patients, normal blood pressure was remained in 1012 (96.1%) and new onset hypertension was noted in 41(3.9%). Moreover, in 106 patients having pre-ESWL hypertension, 78(73.6%) patients were sustained hypertension, mild decrement in 10(9.6%) and increment in 6(5.7%). 2. Of the new onset hypertensive 41 patients, the male to female sex ratio was about 41 and their ages ranged from 14 to 68 years with an average of 47.9 years, but most of them were above 40 years. 3. Concerning these 41 patients, they had renal(32 cases) or ureteral(9 cases) stones of which sizes ranged from 0.7 to 3.8cm(mean 1.7cm) and number of treatments were ranged from 1 to 21 with an average of 5 sessions. 4. Of the post-ESWL hypertensive 32 patients who had renal stones, the mean diastolic blood pressure increased from 10 to 50mmHg with an average of 28.1mmHg. Seven of these 32 patients required drug therapy and an additional 25 patients had an increase in diastolic blood pressure not requiring therapy. The rate of hypertension was not increased in accordance with the storage of shock waves. Only 41(3.9%) patients who were normotensive prior to treatment become hypertensive after ESWL. If we assume that the age-dependent increase of hypertension is 0.9% per year, there is not too much evidence at the moment that hypertension is caused by ESWL treatment and requires further study.