Utility of galactomannan antigen detection in bronchoalveolar lavage fluid in immunocompromised patients

被引:20
作者
Brownback, Kyle R. [1 ]
Pitts, Lucas R. [1 ]
Simpson, Steven Q. [1 ]
机构
[1] Univ Kansas, Med Ctr, Div Pulm & Crit Care Med, Kansas City, KS 66160 USA
关键词
Aspergillosis; bronchoalveolar lavage; galactomannan; immunodeficiency; INVASIVE PULMONARY ASPERGILLOSIS; FUNGAL-INFECTIONS; CIRCULATING GALACTOMANNAN; TRANSPLANT RECIPIENTS; ENZYME-IMMUNOASSAY; DIAGNOSIS; PIPERACILLIN; SURVEILLANCE; ASSAY; TOOL;
D O I
10.1111/myc.12074
中图分类号
R75 [皮肤病学与性病学];
学科分类号
100206 ;
摘要
Diagnosis of invasive pulmonary aspergillosis (IPA) is a challenging process in immunocompromised patients. Galactomannan (GM) antigen detection in bronchoalveolar lavage (BAL) fluid is a method to detect IPA with improved sensitivity over conventional studies. We sought to determine the diagnostic yield of BAL GM assay in a diverse population of immunocompromised patients. A retrospective review of 150 fiberoptic bronchoscopy (FOB) with BAL for newly diagnosed pulmonary infiltrate in immunocompromised patients was performed. Patient information, procedural details and laboratory studies were collected. BAL and serum samples were evaluated for GM using enzyme-linked immunoassay. Of 150 separate FOB with BAL, BAL GM was obtained in 143 samples. There were 31 positive BAL GM assays. In those 31 positive tests, 13 were confirmed as IPA, giving a positive predictive value of 41.9%. There was one false negative BAL GM. Of the 18 false positive BAL GM, 4 were receiving piperacillin- tazobactam and 11 were receiving an alternative beta-lactam antibiotic. BAL GM assay shows excellent sensitivity for diagnosing IPA. There was a significant number of false positive BAL GM assays and several of those patients were receiving beta-lactam antibiotics at the time of bronchoscopy.
引用
收藏
页码:552 / 558
页数:7
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