Loading...
Please wait, while we are loading the content...
Similar Documents
Nosocomial Pneumonia Caused in an Immunocompetent Patient by the Emergent Monophasic ST34 Variant of Salmonella enterica Serovar Typhimurium: Treatment-Associated Selection of Fluoroquinolone and Piperacillin/Tazobactam Resistance
| Content Provider | MDPI |
|---|---|
| Author | Xenia, Vázquez Javier, Fernández Forcelledo, Lorena Balboa-Palomino, Salvador Rodicio, María Rosario |
| Copyright Year | 2022 |
| Description | The present report describes an uncommon case of nosocomial pneumonia caused by Salmonellaenterica in an immunocompetent patient. The patient was admitted to ICU of a tertiary hospital due to low level of consciousness, aphasia and seizure episodes. Four days after hospitalization, he developed nosocomial pneumonia, which evolved into septic shock. Gram-negative bacilli were recovered from blood, tracheal aspirate and fecal samples of the patient. The isolates, which were identified as Salmonella enterica, proved to be resistant to ciprofloxacin, amoxicillin/clavulanic acid and piperacillin/tazobactam. Four months before, the same bacterial species was recovered from feces and blood cultures of the patient, admitted to the nephrology ward of the same hospital with diagnosis of gastroenteritis and acute renal failure. However, at that time, the isolates were susceptible to the above-mentioned antibiotics. Genome sequencing revealed that all isolates were closely related and belonged to the emergent ST34 monophasic variant of S. enterica serovar Typhimurium. Since the patient has received therapy with fluoroquinolones and amoxicillin/clavulanic acid, these results support treatment-associated selection of the acquired resistances. In conclusion, this case represents a paradigm of selective pressure leading to in vivo development of resistance to highly relevant antibiotics, including the piperacillin/tazobactam combination used for empirical management of severe infections at ICU. |
| Starting Page | 303 |
| e-ISSN | 20796382 |
| DOI | 10.3390/antibiotics11030303 |
| Journal | Antibiotics |
| Issue Number | 3 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-02-24 |
| Access Restriction | Open |
| Subject Keyword | Antibiotics Infectious Diseases Nosocomial Pneumonia Gastrointestinal Infection Salmonella Enterica St34 Fluoroquinolone Resistance Piperacillin/tazobactam Resistance |
| Content Type | Text |
| Resource Type | Article |
