Antimicrobial Susceptibility of Multidrug-Resistant Acinetobacter baumanii in a Teaching Hospital: A Two-Year Observation

Multidrug-resistant (MDR) Acinetobacter baumanii (A. baumanii) caused hospital acquired infec-tion, typically in critical-ill patients with medical devices. This is a retrospective descriptive study on epidemiology and microbiology data to determine the antimicrobial susceptibility pattern of MDR-Acinetobacter baumanii isolates from a teaching hospital in Tangerang, Indonesia from Ja-nuari 2013 to December 2014. A total of 84 A. baumanii were collected. Patients suffering from respiratory tract infection had the highest number (41.7%) of A. baumanii isolate. There were 39 (46.6%) patients admitted in critical care. A. baumanii isolates in this study mostly were multi-drug-resistant organisms with low susceptibility level to 11 antibiotic tested, 44 %- 69 % in 2013 and 26 %- 67 % in 2014. A high susceptibility level was observed to amikacin (80 % and 79 % in 2013, 2014 consecutively) and trimethoprim-sulfamethoxazole (73 % and 72 % in 2013, 2014 consecutively). A. baumanii is a hospital acquired pathogen in critically-ill patients. The suscepti