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Published on: March 29, 2024
[Risk factors of ventilator-associated pulmonary Candida infection and drug-resistant analysis]
Rong Qu1, Shao-xi Cai, Wan-cheng Tong
1Department of Respiratory Diseases, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. jiyanqurong@163.com
Objective:
To investigate the risk factors for pulmonary Candida infection in association with mechanical ventilation and analyze the drug resistance profile of the Candida species that cause the infection.
Methods:
A retrospective analysis was conducted 114 patients receiving mechanical ventilation for over 48 h. According to the presence of pulmonary Candida infections, these patients were divided into infected group (n=50, 43.9%) and non-infected group (64 cases). Univariate analysis and multivariate logistic regression analysis were performed to identify the risk factors for the infection, and drug sensitivity test was carried out to evaluate the drug resistance of the Candida species.
Results:
Univariate analysis and multivariate logistic regression showed that the presence of at least two underlying diseases (OR=4.758, P=0.009), frequent changes of antibiotics (OR=6.128, P=0.001), and blood albumin below 25 g (OR=15.829, P=0.011) were the independent risk factors for pulmonary Candida infection associated with mechanical ventilation, and prophylactic antifungal treatment (OR=0.062, P=0.012) was a protective factor. Drug sensitivity test showed that Candida albicans was sensitive to most of the antifungal agents (100.0%), but the non-albicans Candida species were resistant to fluconazol (50.0%) and Itraconazole (38.5%).
Conclusion:
Poor general conditions and frequent changes of antibiotics are the major risk factors for pulmonary Candida infection in patients receiving mechanical ventilation. Drug resistant analysis is helpful in the treatment of the infections.
Insights
Mechanical ventilation increases the risk of pulmonary Candida infections, especially with multiple underlying diseases and frequent antibiotic changes. Prophylactic antifungal treatment is protective, but non-albicans Candida species show resistance to common antifungals.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Critical Care Medicine
Context:
- Mechanical ventilation is a life-support measure for critically ill patients.
- Pulmonary Candida infection is a serious complication in mechanically ventilated patients.
- Understanding risk factors and antifungal resistance is crucial for effective management.
Purpose:
- To identify risk factors for pulmonary Candida infection in patients on mechanical ventilation.
- To analyze the drug resistance patterns of Candida species causing these infections.
Summary:
- Retrospective analysis of 114 mechanically ventilated patients identified multiple comorbidities, frequent antibiotic alterations, and low albumin levels as independent risk factors for pulmonary Candida infection.
- Prophylactic antifungal therapy demonstrated a protective effect.
- Candida albicans remained sensitive to most antifungals, whereas non-albicans Candida species exhibited significant resistance to fluconazole and itraconazole.
Impact:
- Findings highlight the importance of optimizing antibiotic stewardship and nutritional support in mechanically ventilated patients.
- Results inform clinical decisions regarding empirical and targeted antifungal therapy based on species-specific resistance profiles.
- This study contributes to reducing the morbidity and mortality associated with pulmonary fungal infections in intensive care settings.
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