Acinetobacter baumannii is one of the most problematic causative agents of nosocomial infections, especially in the immune compromised or patients in intensive care units. In recent years, as multiple antibiotic resistant A. baumannii has increasingly emerged, it has become difficult to treat infections effectively. The authors report a case of extreme drug resistant A. baumannii bacteremia caused by catheter-related infection, as confirmed by blood and catheter tip culture, in a 63-year-old man. The patient responded well to 24 days of doripenem and colistin treatment.

• 이재민(국립경찰병원 내과) | Jae Min Lee (Department of Internal Medicine, National Police Hospital, Seoul, Korea)
• 조재현(국립경찰병원 내과) | Jae Hyun Cho (Department of Internal Medicine, National Police Hospital, Seoul, Korea) Corresponding author
• 고석영(국립경찰병원 내과) | Seokyoung Koh (Department of Internal Medicine, National Police Hospital, Seoul, Korea)
• 김가영(국립경찰병원 내과) | Ka Young Kim (Department of Internal Medicine, National Police Hospital, Seoul, Korea)
• 이경진(국립경찰병원 내과) | Kyung Jin Lee (Department of Internal Medicine, National Police Hospital, Seoul, Korea)