Clinical characteristics, effectiveness and cost of different treatment methods for invasive Klebsiella pneumoniae liver abscess syndrome. / ä¾µè¢­æ€§è‚ºç‚Žå ‹é›·ä¼¯èŒè‚è„“è‚¿ç»¼åˆå¾çš„ä¸´åºŠç‰¹å¾åŠä¸åŒæ²»ç–—æ–¹å¼çš„æœ‰æ•ˆæ€§ä¸Žè´¹ç”¨åˆ†æž.

OBJECTIVES: Bacterial liver abscess is one of the common infectious diseases of the digestive system. Invasive Klebsiella pneumoniae liver abscess syndrome (IKLAS) refers to cases where, in addition to liver abscess, there are migratory infections foci or other invasive manifestations. The clinical characteristics and risk factors of IKLAS are not fully elucidated, and there is a lack of research on the effectiveness and cost-effectiveness of different treatment methods. This study aims to compare the clinical characteristics of patients with IKLAS and non-IKLAS, and explore effective and economical treatment methods. METHODS: This retrospective study collected medical records of patients with Klebsiella pneumoniae liver abscess treated at Xiangya Hospital of Central South University from January 2010 to December 2023. A total of 201 patients were included, dividing into an IKLAS group (n=37) and a non-IKLAS group (n=164). Differences in demographics, symptoms and signs, laboratory indicators, imaging characteristics, comorbidities, treatment methods, treatment outcomes, and direct treatment costs between 2 groups were analyzed. The study also compared the effectiveness and costs of different treatment methods. RESULTS: Compared with the non-IKLAS group, the proportion of patients with diabetes, Quick Sequential Organ Failure Assessment (qSOFA)≥2, immune deficiency, anemia, and thrombocytopenia in the IKLAS group was higher, and the level of procalcitonin at the onset in the IKLAS group was also higher (all P<0.05). In terms of symptoms and signs, the IKLAS group had a higher proportion of visual abnormalities and a lower proportion of complaints of abdominal pain (both P<0.05). In terms of complications, the incidence of combined pleural effusion, pulmonary infection, acute renal failure, respiratory failure, and multiple organ failure was higher in the IKLAS group (all P<0.05). The IKLAS group had a higher proportion of patients treated with antibiotics alone (24.32% vs 11.59%), while the non-IKLAS group had a higher proportion of patients treated with antibiotics combined with puncture and drainage (86.59% vs 64.86%, both P<0.05). The overall effective rate of the IKLAS group (83.78%) was lower than that of the non-IKLAS group (95.73%), and the treatment and drug costs were higher (all P<0.05). The treatment method of antibiotics combined with surgical resection of infectious foci showed a 100% improvement rate, antibiotics combined with abscess puncture and drainage had an 84.9% improvement rate, and in antibiotics alone had an 82.1% improvement rate, with statistical differences among the 3 treatment methods (P<0.05). In terms of treatment costs, antibiotics alone were the most expensive (P<0.05). CONCLUSIONS: Patients with IKLAS have poorer prognosis and higher direct medical costs. The combination of abscess puncture and drainage or surgery has a higher improvement rate and lower hospitalization costs compared to antibiotics alone, suggesting that surgical intervention may reduce antibiotic costs and save medical expenses.

Clinical characteristics and economic consequence of Klebsiella pneumoniae liver abscess in Taiwan.

BACKGROUND: Klebsiella pneumoniae liver abscess (KPLA) has emerged as an endemic disease in Taiwan, and its prevalence has been increasing in east Asian countries in the past three decades. The utilization of healthcare resources associated with KPLA is assumed to be substantial, and may be of future concern. This study investigated the clinical characteristics and economic burden of KPLA in Taiwan in 2011 and 2012. METHODS: Adult patients with KPLA were identified retrospectively in a tertiary medical center in Taiwan from January 2011 to December 2012. The clinical characteristics, total and daily hospitalization expenditure, and the risk factors for the costs of KPLA were analyzed. RESULTS: Among patients with KPLA, the median cost was $5290.80 in US dollars, and the mean cost was $6337.50 ± $4363.40. Length of hospital stay was the only independent risk factor for the high total hospitalization expenditure. The duration of antibiotic use was nearly the same as the length of hospital stay. The prolonged stay in the general ward (≥21 days) also contributed to the high total cost of hospitalization. The independent risk factors for the high average daily cost of hospitalization were a higher Charlson Comorbidity Index and the requirement of intensive care on admission. CONCLUSION: The current study is the first to demonstrate the high economic burden resulting from KPLA in a medical center in Taiwan. Standardizing the treatment protocol for KPLA inpatients and introducing an outpatient parenteral antimicrobial therapy center to reduce the length of stay may reduce costs, whereas development of a vaccine may be necessary to tackle endemic KPLA in the future.

Oral versus intravenous antibiotics for patients with Klebsiella pneumoniae liver abscess: study protocol for a randomized controlled trial.

BACKGROUND: Klebsiella pneumoniae liver abscess is the most common etiology of liver abscess in Singapore and much of Asia, and its incidence is increasing. Current management includes prolonged intravenous antibiotic therapy, but there is limited evidence to guide oral conversion. The implicated K1/K2 capsule strain of Klebsiella pneumoniae is almost universally susceptible to ciprofloxacin, an antibiotic with high oral bioavailability. Our primary aim is to compare the efficacy of early (< one week) step-down to oral antibiotics, to continuing four weeks of intravenous antibiotics, in patients with Klebsiella liver abscess. METHODS/DESIGN: The study is designed as a multi-center randomized open-label active comparator-controlled non-inferiority trial, with a non-inferiority margin of 12%. Eligible participants will be inpatients over the age of 21 with a CT or ultrasound scan suggestive of a liver abscess, and Klebsiella pneumoniae isolated from abscess fluid or blood. Randomization into intervention or active control arms will be performed with a 1:1 allocation ratio. Participants randomized to active control will receive IV ceftriaxone 2 grams daily to complete a total of four weeks of IV antibiotics. Participants randomized to intervention will be immediately converted to oral ciprofloxacin 750 mg twice daily. At Week four, all participants will undergo abdominal imaging and be assessed for clinical response (CRP < 20 mg/l, absence of fever, plus scan showing that the maximal diameter of the abscess has reduced). If criteria are met, antibiotics are stopped; if not, oral antibiotics are continued, with reassessment for clinical response fortnightly. If criteria for clinical response are met by Week 12, the primary endpoint of clinical cure is met. A cost analysis will be performed to assess the cost saving of early conversion to oral antibiotics, and a quality of life analysis will be performed to assess whether treatment with oral antibiotics is less burdensome than prolonged IV antibiotics. DISCUSSION: Our results would help inform local and international practice guidelines regarding the optimal antibiotic management of Klebsiella liver abscess. A finding of non-inferiority may translate to the wider adoption of a more cost-effective strategy that reduces hospital length of stay and improves patient-centered outcomes and satisfaction. TRIAL REGISTRATION: Clinical trials gov NCT01723150.