The use of new antibacterial drugs against infections caused by multidrug-resistant Gram-negative bacteria: an Italian real-world evidence study in a Lombardy hospital.
Francesco Ferrara, Roberta Pasquinucci, Anna Chiara Aloisi, Giacomo Polito, Gabriele Bagaglini, Maurizio Capuozzo, Andrea Zovi
Author Information
Francesco Ferrara: Pharmaceutical Department, Asl Napoli 3 Sud, Dell'amicizia Street 22, 80035, Nola, Naples, Italy. f.ferrara@aslnapoli3sud.it. ORCID
Roberta Pasquinucci: Pharmaceutical Department, Asl Napoli 3 Sud, Dell'amicizia Street 22, 80035, Nola, Naples, Italy.
Anna Chiara Aloisi: Fondazione IRCCS San Gerardo dei Tintori di Monza, G.B. Pergolesi Street 33, 2900, Monza, Italy.
Giacomo Polito: Pharmacy Unit, Policlinico Umberto I Hospital, del Policlinico Street 155, 00161, Rome, Italy.
Gabriele Bagaglini: Pharmacy Unit, ASL Latina, Pier Luigi Nervi Street, 04100, Latina, Italy.
Maurizio Capuozzo: Pharmaceutical Department, Asl Napoli 3 Sud, Marittima Street 3, 80056, Ercolano, Naples, Italy. ORCID
Andrea Zovi: Ministry of Health, Viale Giorgio Ribotta 5, 00144, Rome, Italy. ORCID
Infections caused by multidrug-resistant (MDR) bacteria are typically associated with high morbidity and mortality, especially in vulnerable individuals such as patients with prolonged hospitalizations, immunocompromised individuals, and the elderly. This study aimed to provide post-marketing surveillance results concerning the prevalence of antibiotic resistance against Gram-negative bacteria through the collaboration of a multidisciplinary team. patients involved have been treated with new antibacterial drugs, in particular ceftazidime/avibactam (C/A), meropenem/vaborbactam (M/V), cefiderocol, and ceftolozane/tazobactam (C/T). The most resistant bacterial species were Klebsiella spp., Pseudomonas aeruginosa, and Acinetobacter baumannii. Italian Drug Agency (AIFA) monitoring records for inpatients have been collected and analyzed, assessing the characteristics of the patients involved. Adverse drug reactions (ADRs) and drugs involved have been reported using a descriptive analytical approach. All data have been collected retrospectively from patient's medical records and entered into an electronic case report form (CRF). Among the 104 treated patients, Klebsiella spp. accounted for 50.1% of infections, Pseudomonas aeruginosa for 32.7%, Acinetobacter baumannii for 3%, and other bacterial species for 1.92% configuring polymicrobial infections. Regarding treatment outcomes, healing was achieved in 61 (58.6%) patients, 23 (22.1%) patients died, 8 (7.7%) patients discontinued empirical therapy, and 3 (2.9%) patients were lost to follow-up. Despite the introduction of new antibacterial drugs active against Gram-negative bacteria is improving the clinical scenario, it is crucial that the use of new antibacterial drugs be implemented by appropriate antimicrobial stewardship, surveillance programs, and monitoring efforts to prevent further spread of resistance. This study showed that the new antibiotics have good efficacy against MDR bacteria and cause negligible side effects.
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