Abstract
This study was designed to analyze the clinical characteristics, etiological characteristics, drug resistance, and empirical use of antibiotics for community-acquired pyogenic liver abscess (PLA) to provide a basis for rational and effective empirical treatment of PLA in the local area. The clinical data, etiological characteristics, drug resistance, and empirical anti-infective therapy schemes of 606 patients with PLA were collected and analyzed retrospectively. The included patients were mainly males, with a male-to-female ratio of 1.3:1. The average age of the patients was 60.3 ± 14.1 years. The underlying diseases were diabetes and biliary tract disease, accounting for 38.7% and 22.3%, respectively. The main clinical manifestations were fever (92.9%), abdominal pain (44.7%), and nausea (33.3%). Imaging findings: the proportion of patients with a single lesion was 74.7%, and 67% of the patients had involvement in the right lobe of the liver. The main pathogen was Klebsiella pneumoniae accounted for 74.9% in blood culture and 84.1% in pus culture, mainly extended-spectrum β-lactamase. In 272 strains negative for extended-spectrum β-lactamase (ESBLs), 100% were resistant to ampicillin and less than 50% were sensitive to nitrofurantoin. Only 36 ESBL-positive strains had higher than 80% sensitivity to carbapenems, β-lactamase inhibitor compound, and amikacin. Patients treated with different treatment methods showed significantly different average length of hospital stay (14 [9-21] vs 13 [8-18]). Empirical anti-infective therapy: Beta-lactamase complex, carbapenems, cephalosporins, and quinolones were used in 280 (37.6%), 180 (29.7%), 180 (29.7%), and 147 (24.3%) patients, respectively. Patients with community-acquired PLA in this area are mainly males, and the underlying diseases are mainly diabetes and hepatobiliary system disease. The main clinical manifestation is fever, so patients with fever of unknown cause should pay attention to possible liver abscesses. Based on drug sensitivity tests, the empirical use of antibiotics is somewhat unreasonable.
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