Correlation of extracorporeal shock wave lithotripsy (ESWL) with mean arterial blood pressure and heart rate in patients with kidney stones

At present، although more than 90% of renal stones are treated at a success rate of 68-86% with (ESWL)، complications such as the possible occurrence of hypertension are attributed to application of this technique. The purpose of this study was to determine the correlation of ESWL with the mean arterial blood pressure and heart rate. This analytical study was performed on 75 patients with kidney stones in Mashhad using non-probability and purposeful sampling. Blood pressure was measured at three stages before، during، and after lithotripsy in the supine position. The relationship between ESWL- related hypertension and autonomic neural activity was also evaluated by heart rate spectral analysis. Data was analyzed with t-test and one-way analysis of variance. The mean arterial blood pressure increased from 93. 30±9. 73 to 98. 30±12. 63 in men and from 87. 82±11. 08 to 96. 08±14. 51 mmHg in women during lithotripsy and the difference was found to significant، statistically (P<0. 001). The i ncidence of diastolic pressure ≥ 100 mmHg in patients with diastolic pressure less than 90 mmHg prior to lithotripsy was 7. 5%. These results indicate the risk of hypertension during lithotripsy however، the possible occurrence of hypertension following lithotripsy needs more prospective studies.