ABSTRACT
Background: At present, although more than 90% of renal stones are treated at a success rate of 68-86% with extracorporeal shock wave lithotripsy [ESWL], complications such as the possible occurrence of hypertension are attributed to application of this technique
Objective: The purpose of this study was to determine the correlation of ESWL with the mean arterial blood pressure and heart rate
Methods: 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
Findings: 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 incidence of diastolic pressure >/= 100 mmHg in patients with diastolic pressure less than 90 mmHg prior to lithotripsy was 7.5%
Conclusion: These results indicate the risk of hypertension during lithotripsy however, the possible occurrence of hypertension following lithotripsy needs more prospective studies
ABSTRACT
Background and Purpose: Extracorporeal shock wave lithotripsy [ESWL] is initial treatment of choice for most calculi in the kidney. Although ESWL has many side effects one of which is cardiac arrhythmia, occurring mostly in non-synchronized mode. The aim of this research was to determine the effect of extracorporeal shock wave lithotripsy on electrocardiogram changes in patients with renal stone
Methods: This quasi-experimental study was carried out on 75 patients with renal stone who were selected by non-probability and convenience sampling. Then electrocardiograph was obtained from participants before, during and after lithotripsy. The relationship between ESWL-associated arrhythmia and autonomic neural activity was evaluated by heart rate spectral analysis. Electrocardiogram changes were interpreted and the data were analyzed in SPSS and SAS using chi-square, independent t-test, paired t-test, McNemar, Cochrane, One-way ANOVA and general linear model
Results: ESWL was found to elicit new or worsened electrocardiogram changes in 66.7 percent patients with no previous cardiac disease. A statistically significant correlation was demonstrated between the presence of ventricular premature contractions and analgesic drugs [p<0.001] and between the presence of ventricular tachycardia and treatment duration [p<0.001]
Conclusion: Shock waves delivered by lithotripsy cause cardiac arrhythmia