Background
The pandemic of coronavirus disease (COVID-19) has caused huge number of patients admitted to intensive care units (ICUs) in a critical need to mechanical ventilation. Ventilator associated pneumonia (VAP) has been noticed as a common complication in these patients with unfavorable outcomes. The current study aimed to assess bacterial and fungal VAP in COVID-19 patients admitted to ICUs during the second wave and to identify the possible risk factors.
Methods
Respiratory samples were collected from 197 critically ill COVID-19 patients under mechanical ventilation. Bacterial and fungal superinfections were diagnosed by microbiological cultures with subsequent antimicrobial susceptibility testing of the isolates using available kits.
Results
All specimens 197/197 (100%) were positive for bacterial infections, while fungal elements were detected in 134/197 (68%) of specimens. The most frequently isolated bacteria were pan drug resistant (PDR)
Klebsiella pneumoniae
(41.1%), followed by multi drug resistant (MDR)
Acinetobacter baumannii
(27.4%). On the other hand,
Candida
species represented the most frequently isolated fungi (75.4%) followed by molds including
Aspergillus
(16.4%) and
Mucor
(8.2%) species.
Possible risk factors for fungal VAP included underlying diabetes mellitus (95% confidence interval [CI] 1.09−3.31; p = 0.02), chest disease (95% CI 1.01−3.32; p = 0.05), hypothyroidism (95% CI 1.01−4.78; p = 0.05), and longer duration of mechanical ventilation (p < 0.001). Furthermore, all patients 134/134 (100%) who developed fungal VAP, were already under treatment with corticosteroids and Tocilizumab.
Conclusion
Bacterial and fungal VAP in critically ill COVID-19 patients is a serious problem in the current pandemic. Urgent and strategic steps to keep it under control are compulsory.
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