Our aim was to evaluate the risk of arteriovenous fistula (AVF) formation after en bloc stapling of the renal hilum during transperitoneal laparoscopic nephrectomies (LNs). A retrospective review of 35 laparoscopic simple or radical nephrectomies or LNs was carried out. Patients were clinically followed up for renal hilar AVF formation, which could lead to new onset diastolic hypertension, abdominal murmur, and congestive heart failure. In addition, abdominal computed tomography and arteriography were carried out to diagnose renal hilar AVF formation during 6 to 20 months' follow-up. No statistically significant differences were measured between the systolic and the diastolic blood pressures between the preoperative and the postoperative periods (P>0.005). Abdominal murmur and new-onset congestive heart failure were not detected in any of the patients on physical examination. Our results suggest that en bloc stapling of the renal hilum during LN procedures is safe and effective.
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