- Giacobbe, Daniele Roberto;
- Prattes, Juergen;
- Wauters, Joost;
- Dettori, Silvia;
- Signori, Alessio;
- Salmanton-García, Jon;
- Maertens, Johan;
- Bourgeois, Marc;
- Reynders, Marijke;
- Rutsaert, Lynn;
- Van Regenmortel, Niels;
- Lormans, Piet;
- Feys, Simon;
- Klimko, Nikolay;
- Shadrivova, Olga;
- Cornely, Oliver A;
- Rautemaa-Richardson, Riina;
- Koehler, Philipp;
- Lagrou, Katrien;
- Bassetti, Matteo;
- Hoenigl, Martin
- Editor(s): Hanson, Kimberly E
Critically ill patients with coronavirus disease 2019 (COVID-19) may develop COVID-19-associated pulmonary aspergillosis (CAPA), which impacts their chances of survival. Whether positive bronchoalveolar lavage fluid (BALF) mycological tests can be used as a survival proxy remains unknown. We conducted a post hoc analysis of a previous multicenter, multinational observational study with the aim of assessing the differential prognostic impact of BALF mycological tests, namely, positive (optical density index of ≥1.0) BALF galactomannan (GM) and positive BALF Aspergillus culture alone or in combination for critically ill patients with COVID-19. Of the 592 critically ill patients with COVID-19 enrolled in the main study, 218 were included in this post hoc analysis, as they had both test results available. CAPA was diagnosed in 56/218 patients (26%). Most cases were probable CAPA (51/56 [91%]) and fewer were proven CAPA (5/56 [9%]). In the final multivariable model adjusted for between-center heterogeneity, an independent association with 90-day mortality was observed for the combination of positive BALF GM and positive BALF Aspergillus culture in comparison with both tests negative (hazard ratio, 2.53; 95% CI confidence interval [CI], 1.28 to 5.02; P = 0.008). The other independent predictors of 90-day mortality were increasing age and active malignant disease. In conclusion, the combination of positive BALF GM and positive BALF Aspergillus culture was associated with increased 90-day mortality in critically ill patients with COVID-19. Additional study is needed to explore the possible prognostic value of other BALF markers.