Delayed decompression increases death risk in patients with obstructing stones: Study

New York: A delay in decompression increases mortality risk (by 29%) in patients with urinary tract infection and obstructing upper urinary tract stones, finds a recent study published in the Journal of Urology. Otherwise, the overall mortality risk is fairly low in such patients.

Obstructive pyelonephritis is a urological emergency that usually requires prompt treatment which is aimed at saving the kidney viability. But there is a limited evidence on the importance of prompt decompression. Therefore, Ojas Shah, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, and colleagues sought to investigate whether delay in decompression is an independent predictor of in-hospital mortality. They also aimed to determine the impact of patient, hospital and disease factors on the likelihood of receipt of delayed vs prompt decompression.

The researchers identified all patients 18 years old or older with ICD-9 diagnosis of urinary tract infection who had either a ureteral stone or kidney stone with hydronephrosis (311,100) using the National Inpatient Sample from 2010 to 2015. Two weighted sample multivariable logistic regression models assessed predictors of the primary outcome of death in the hospital and secondly, predictors of delayed decompression (2 or more days after admission).