Abstract
BackgroundAlthough combination therapy of echinocandins with trimethoprim-sulfamethoxazole (TMP-SMX) has been reported for patients with Pneumocystis jirovecii pneumonia (PCP), the effectiveness of this combination therapy in patients with PCP without human immunodeficiency virus (HIV) infection remains unknown. MethodsData from the Japanese Diagnosis Procedure Combination inpatient database was used to identify non-HIV patients who underwent their first hospitalisation for PCP between April 2012 and March 2022. The patients were divided into those treated with TMP-SMX alone and those treated with TMP-SMX combined with echinocandins. We performed propensity-score overlap-weighting analysis to estimate in-hospital mortality. ResultsAmong the 1324 eligible patients, 122 received TMP-SMX plus echinocandins, while 1202 received TMP-SMX alone. The propensity-score overlap-weighting analysis showed that the combination therapy was not associated with reduced in-hospital mortality in comparison with TMP-SMX alone (22.2 % vs. 26.9 %; risk difference, 4.6 %; 95 % confidence interval, −6.1 %–15.3 %; P = 0.398). ConclusionsEchinocandins combined with TMP-SMX may not improve in-hospital mortality due to PCP in patients without HIV infection.
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