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Pneumocystis jirovecii pneumonia (PCP) PCR-negative conversion predicts prognosis of HIV-negative patients with PCP and acute respiratory failure

 Ji Soo Choi  ;  Sang Hoon Lee  ;  Ah Young Leem  ;  Joo Han Song  ;  Song Yee Kim  ;  Kyung Soo Chung  ;  Ji Ye Jung  ;  Young Ae Kang  ;  Young Sam Kim  ;  Joon Chang  ;  Moo Suk Park 
 PLoS One, Vol.13(10) : e0206231, 2018 
Journal Title
 PLoS One 
Issue Date
BACKGROUND: Pneumocystis jirovecii pneumonia (PCP) is often fatal in human immunodeficiency (HIV)-negative patients and typically presents with respiratory insufficiency. Predicting treatment failure is challenging. This study aimed to identify prognostic factors and examine PCP polymerase chain reaction (PCR)-negative conversion in non-HIV PCP patients with respiratory failure. METHOD: We retrospectively enrolled 81 non-HIV patients diagnosed with and treated for PCP with respiratory failure in the intensive care unit at a tertiary hospital over a 3-year period. PCP was diagnosed via nested PCR-mediated detection of Pneumocystis jirovecii in induced sputum samples, endotracheal aspirates, and bronchoalveolar lavage fluids. PCP PCR was performed weekly to check for negative conversion. RESULTS: The overall survival rate was 35.8%. Seventy-four patients (91.3%) required mechanical ventilation, and 6 (7.4%) required high-flow nasal oxygen treatment. The PCP PCR-negative conversion rate was 70.5% (survivors, 97%; non-survivors, 63.5%); the median time to conversion was 10 (7.0-14.0) days. On univariate analysis, the APACHE II score (p < 0.001), renal failure requiring renal replacement therapy (p = 0.04), PCP PCR-negative conversion (p = 0.003), and the PaO2/FiO2 ratio (first 24 hours) (p < 0.001) significantly correlated with mortality. On multivariate analysis, PCP PCR-negative conversion (hazard ratio, 0.433; 95% confidence interval, 0.203-0.928; p = 0.031) and the PaO2/FiO2 ratio (first 24 hours) (hazard ratio, 0.988; 95% confidence interval, 0.983-0.993; p < 0.001) independently predicted prognosis. CONCLUSIONS: Determination of PCP PCR-negative conversion and PaO2/FiO2 ratios may help physicians predict treatment failure and mortality in non-HIV PCP patients with respiratory failure.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
강영애(Kang, Young Ae) ORCID logo https://orcid.org/0000-0002-7783-5271
김송이(Kim, Song Yee) ORCID logo https://orcid.org/0000-0001-8627-486X
김영삼(Kim, Young Sam) ORCID logo https://orcid.org/0000-0001-9656-8482
박무석(Park, Moo Suk) ORCID logo https://orcid.org/0000-0003-0820-7615
송주한(Song, Joo Han)
이상훈(Lee, Sang Hoon) ORCID logo https://orcid.org/0000-0002-7706-5318
임아영(Leem, Ah Young) ORCID logo https://orcid.org/0000-0001-5165-3704
장준(Chang, Joon) ORCID logo https://orcid.org/0000-0003-4542-6841
정경수(Jung, Kyung Soo) ORCID logo https://orcid.org/0000-0003-1604-8730
정지예(Jung, Ji Ye) ORCID logo https://orcid.org/0000-0003-1589-4142
최지수(Choi, Ji Soo) ORCID logo https://orcid.org/0000-0003-2716-6775
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