Incidence of spontaneous fungal peritonitis in patients with liver cirrhosis in a Mexico City population

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BACKGROUND Individuals with liver cirrhosis (LC) are likely to experience multiple infectious processes due to the immune dysfunction caused by the disease. Our hypothesis is that this group of patients is predisposed to fungal infections. To date, the incidence of spontaneous fungal peritonitis (SFP) has not been determined in Mexico; this endeavor is of great importance because many patients may be suffering from this condition without receiving targeted treatment, which may increase mortality. AIM To report the incidence of SFP in patients presenting with decompensated LC with ascites. METHODS This was a prospective, single-center, descriptive, observational and cross-sectional study where patients presenting with decompensated LC with ascites were evaluated from November 2023 to May 2024 in Mexico City. Fungal cultures of ascites were performed and the samples kept in an incubator for 10 days to 14 days, and molecular tests (the API 20 C AUX test) were used for molecular characterization. RESULTS Of the 48 patients included, 54.2% were women, 77.1% had a comorbidity, 47.9% had LC secondary to metabolic dysfunction, 43.8% were classified as Child-Pugh C with a model for end-stage liver disease 3.0 median score of 22, and 10.4% were in secondary prophylaxis for spontaneous bacterial peritonitis (SBP). Only four patients had positive cultures where Candida parapsilosis and Candida albicans were isolated, with two of the four patients being positive for Rhodotorula minuta ; an SBP incidence of 8.3% was thus calculated. Chronic kidney disease [P = 0.012 and relative risk (RR) = 15] and secondary prophylaxis for SBP (P = 0.049 with RR = 8.6) were statistically significant and associated with a high mortality risk (P = 0.001 with RR = 33). CONCLUSION The presence of infection of fungal origin in ascites in patients presenting with cirrhosis increases short- and medium-term mortality; therefore, it is recommended that fungal culture tests are performed in those patients who visit the emergency room or experience continuous admission with acute decompensation and no bacteria identified in ascites cultures, and even more so in patients with chronic kidney disease and a history of antibiotic use as prophylaxis for SBP. Further studies are needed for the identification of clinical and biochemical data that can help to define SFP so that its presence may be assessed without the need to wait for a positive fungal culture. Thus, treatment may be initiated early in the hope of having a positive impact on the prognosis in this group of patients.

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