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Critical Care Management Considerations in Klebsiella pneumoniae Invasive Liver Abscess Syndrome: Case Reports and
Jerry Chen1,2, Caleigh Horan1,2, Krishen Wadhwani1,2
1Department of Internal Medicine, San Ysidro Health, San Ysidro, California, USA.
Importance:
Klebsiella pneumoniae invasive liver abscess syndrome (ILAS) is an emerging disease characterized by liver abscess without biliary disease, often with multiorgan metastatic infection. It can cause severe critical illness with significant morbidity and disability. There remains limited literature and understanding of this syndrome in the United States.
Objectives:
This article aims to describe the clinical characteristics of hospitalized and critically ill patients with ILAS and providing management considerations for critical care clinicians.
Main Outcomes And Measures:
Adult patients admitted to Scripps Health from Janurary 1, 2018 to April 1, 2024 were reviewed. Inclusion criteria required radiographic evidence of a liver abscess and cultures (blood or abscess) positive for K. pneumoniae. Data collected included demographics, symptoms and signs, laboratory and radiologic data, metastatic infection characteristics, treatment, mortality, and morbidity. Patient cases were described, and a narrative review describing clinical, therapeutic, and prognostic characteristics was conducted.
Results:
Six patients had ILAS. Mean age was 54.8 years, no immunosuppression (defined as underlying malignancy, drug-induced, or chronic infection), 83% had diabetes, 50% were male, and 50% were of Asian ethnicity. Liver abscesses were multilocular (50%), and all had percutaneous catheter drainage. Fifty percent of patients developed distant metastatic infections: emphysematous cystitis, pulmonary septic emboli, complicated parapneumonic pleural effusions, meningitis, ventriculitis, cerebral septic emboli, and endophthalmitis. These patients were younger, male, and had a higher rate of intensive care unit (ICU) admission and mechanical ventilation. Two patients required ICU admission with septic shock, diabetic ketoacidosis, respiratory failure, severe thrombocytopenia, and altered mental status. K. pneumoniae isolates were pansensitive except to ampicillin. There was no in-hospital mortality. The patient with meningitis and ventriculitis had full neurological recovery, and the patient with endophthalmitis had very poor residual visual acuity.
Conclusions And Relevance:
ILAS is an emerging disease that can cause severe critical illness with multiorgan involvement. Early identification of the disease and metastatic infection is essential to provide appropriate treatment. Additionally, ILAS patients require screening for endophthalmitis.
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