Intranasal desmopressin reduces renal biopsy-related bleeding and serum sodium levels in patients with reduced renal function.

Background The use of desmopressin in preventing renal biopsy-related bleeding is not established and its effects on serum sodium levels are not well studied. The study aimed to compare the bleeding complication rates between the groups with and without desmopressin use prebiopsy and to observe the effect of desmopressin on postbiopsy serum sodium levels. Methods In this single-center, prospective and retrospective interventional study, from June 2018 onwards, patients with serum creatinine >132.6 μmol/L but not on dialysis and undergoing ultrasound-assisted needle-guided renal biopsy received 150 μg of desmopressin (D-amino D-arginine vasopressin (DDAVP)) (Group II). Data from patients from June 2017 to May 2018 were included in Group I in whom desmopressin was not used. Bleeding complications were monitored by clinical and ultrasound surveillance. Serum sodium levels were checked prior to and 24 h following desmopressin in Group II. Results A total of 194 patients were included in the study: 105 in Group I and 89 in Group II. Group II had lower overall minor bleeding complications and perinephric hematomas than Group I (15.7% versus 31.4%, 14% versus 27% and 7.8% versus 19% in Group II and Group I, respectively, with P < 0.05). Not using desmopressin and female sex were significant predictors for overall risk of bleeding on multivariate logistic regression. Serum sodium levels fell in 94% of patients in Group II. Lower prebiopsy serum sodium, higher estimated glomerular function rate and higher spot urine sodium values were associated with a greater decrease in serum sodium after desmopressin. Conclusion Intranasal desmopressin reduces bleeding complications during renal biopsies performed in patients with reduced renal function not requiring dialysis, albeit with a risk of developing hyponatremia.