Treatment outcomes of <em><em>Acinetobacter</em> <em>baumannii</em></em> -associated pneumonia and/or bacteraemia at the intensive care unit of Universitas Academic Hospital, Bloemfontein, South Africa

Afr J Thorac Crit Care Med. 2021 Mar 9;27(1):10.7196/AJTCCM.2021.v27i1.122. doi: 10.7196/AJTCCM.2021.v27i1.122. eCollection 2021.

ABSTRACT

BACKGROUND: Nosocomial infection with multidrug-resistant (MDR) Acinetobacter baumannii is associated with high mortality rates and the optimal treatment regimen is uncertain.

OBJECTIVES: To compare outcomes, as well as ICU and in-hospital survival rates of patients with A. baumannii pneumonia and/or bacteraemia who were treated with colistin monotherapy v. colistin/tigecycline combination therapy.

METHODS: This was a retrospective cross-sectional study of patients admitted to the multidisciplinary ICU of Universitas Academic Hospital, Bloemfontein, South Africa, between 1 January 2018 and 31 December 2019.

RESULTS: Sixteen patients were included in the study. Nine patients were treated with a combination of colistin and tigecycline, while 7 patients were treated with colistin only. Seven out of 9 (77.8%) patients in the colistin/tigecycline combination therapy group were treated successfully and survived until discharge from ICU, as opposed to 2 out of 7 (28.6%) in the colistin monotherapy group (relative risk (RR) 2.7; 95% CI 0.80 - 9.24). Five out of 9 (55.6%) in the colistin/tigecycline combination therapy group v. 2 out of 7 (28.6%) in the colistin monotherapy group survived until discharge from hospital (RR 1.94; 95% CI 0.53 - 7.20).

CONCLUSION: Although ICU survival in patients with A. baumannii infection was better when treated with colistin/tigecycline combination therapy compared with colistin monotherapy, a statistically significant difference could not be detected. Adequately powered prospective clinical trials are required to detect statistically significant differences in treatment outcomes.

PMID:34240044 | PMC:PMC8203074 | DOI:10.7196/AJTCCM.2021.v27i1.122