Pseudomonas Aeruginosa Infections Among COVID-19 Patients in Intensive Care Units at Nancy University Hospital During the First Three Epidemic Waves: a Retrospective Study (Pyo-COVID-3)

P. aeruginosa is an opportunistic bacterium known to be responsible for numerous healthcare-associated infections, particularly in intensive care units (ICU). The frequency of these infections seems to have increased during the first waves of the COVID-19 pandemic. Identifying cases of co-infection and secondary infections with P. aeruginosa in patients with COVID-19 would provide a better understanding of the epidemiological evolution and characteristics of infected patients.

Treatment of P. aeruginosa infections requires the use of antibiotics. Antibiotic resistance is a growing problem, with an increase in resistance among P. aeruginosa strains. The misuse of antibiotics to treat patients can accentuate the phenomenon of antibiotic resistance, and failure to take account of resistance revealed by antibiograms can compromise patient recovery. Analysis of bacteriological results and patient medical records would enable a posteriori evaluation of the proper use of antibiotics (choice and adaptation of molecules, doses and duration of prescriptions), and identify any areas for improvement.

The main objective is to describe the evolution of P. aeruginosa infections in ICU patients with COVID-19 during the first 3 waves of COVID-19 (01/03/2020 to 31/05/2021). Secondary objectives are to describe the typology of P. aeruginosa strains identified among included patients (sampling sites and resistance profiles), to assess antibiotic prescriptions for these patients and to describe the relapse rate of included patients with a first P. aeruginosa infection.