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Of these, 9,828 (28.9%) patients underwent ureteral stenting and 24,181 (71.1%) underwent PCN. The unadjusted mortality rate for US patients was 2.8% compared to 5.3% in the PCN group (p <0.01). Patients who received US were more likely to be female (61.7% vs 53.8%, p <0.01), White (69.3% vs 64.5%, p <0.01), and have private health insurance coverage (26.5% vs 20.9%, p <0.01, Table 1). After adjustment for baseline characteristics, having a US compared to PCN was associated with a lower risk of mortality (OR 0.72, 95% CI 0.63-0.83, p <0.01) After matching patients based on propensity score, the mortality rate for patients who received a US was 3.5% compared to 3.9% in the PCN group (p[0.26).CONCLUSIONS: This large national analysis demonstrates that US placement in septic obstructive uropathy is associated with lower mortality compared to PCN. After propensity score matching this finding was no longer statistically significant. Further prospective randomized trials are needed to address this important clinical question.

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