4.6 Article

Secondary Infections in Critically Ill Patients with COVID-19: A Retrospective Study

期刊

ANTIBIOTICS-BASEL
卷 11, 期 11, 页码 -

出版社

MDPI
DOI: 10.3390/antibiotics11111598

关键词

COVID-19; mechanical ventilation; hospital-acquired infections; resistance

资金

  1. Fondi Ricerca Scientifica di Ateneo
  2. [243]
  3. [394]

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This study describes the burden of hospital-acquired superinfections in a cohort of severe COVID-19 patients in the ICU. Gram-negative bacteria were the most common pathogens, with over half of the infections caused by multidrug-resistant opportunistic pathogens. Male gender, higher BMI, and the presence of ventilator-associated pneumonia were independently associated with mortality.
Patients with severe COVID-19, especially those followed in the ICU, are at risk for developing bacterial and fungal superinfections. In this study, we aimed to describe the burden of hospital-acquired superinfections in a cohort of consecutive, severe COVID-19 patients hospitalized between February and May 2021 in the intensive care unit (ICU) department of San Salvatore Hospital in Pesaro, Italy. Among 89 patients considered, 68 (76.4%) acquired a secondary infection during their ICU stay. A total of 46 cases of ventilator-associated pneumonia (VAP), 31 bloodstream infections (BSIs) and 15 catheter-associated urinary tract infections (CAUTIs) were diagnosed. Overall mortality during ICU stay was 48%. A multivariate analysis showed that factors independently associated with mortality were male gender (OR: 4.875, CI: 1.227-19.366, p = 0.024), higher BMI (OR: 4.938, CI:1.356-17.980, p = 0.015) and the presence of VAP (OR: 6.518, CI: 2.178-19.510, p = 0.001). Gram-negative bacteria accounted for most of the isolates (68.8%), followed by Gram-positive bacteria (25.8%) and fungi (5.3%). Over half of the infections (58%) were caused by MDR opportunistic pathogens. Factors that were independently associated with an increased risk of infections caused by an MDR pathogen were higher BMI (OR: 4.378, CI: 1.467-13.064, p = 0.0008) and a higher Charlson Comorbidity Index (OR: 3.451, 95% CI: 1.113-10.700, p = 0.032). Secondary infections represent a common and life-threatening complication in critically ill patients with COVID-19. Efforts to minimize the likelihood of acquiring such infections, often caused by difficult-to-treat MDR organisms-especially in some subgroups of patients with specific risk factors-must be pursued.

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