• Alberto Fica, Luis Gálvez, Esteban Teneb, Cristian Fernandoi, and Sergio Acevedo.
• Servicio de Medicina, Hospital Base Valdivia, Valdivia, Chile.
• Rev Med Chil. 2023 Oct 1; 151 (10): 127112801271-1280.

UnlabelledPatients in adult psychiatric wards present infectious complications or pathologies that mimic an infectious condition, and there is little information on this subject.ObjectivesTo know the frequency and infectious and non-infectious complications treated by infectious disease specialists in a psychiatric intensive-care hospitalization unit for adults and their outcomes.MethodsObservational study between 2016 and 2021.Results37 patients with 41 events were evaluated. Almost half of the visits to these events originated from an antimicrobial stewardship program (46.3%). In 68.3% of the events, complementary studies were requested; in 14.6%, referral to other specialties; in 26.8%, an antimicrobial treatment was started; and in 75%, modifications were made to previous schemes. An infectious cause was identified in 30 of 41 events (73.2%) that included the following conditions: respiratory (31.7%), skin (9.8%), urinary (7.3%), gynecological (2.4%), one case of bacteremia with unknown source (2.4%), sequential infections (4.9%) and HIV therapy dropouts (7.3%). In the 11 remaining events, non-infectious causes were identified (26.8%): pulmonary thromboembolism, drug hepatotoxicity, false positive VDRL and HIV tests, steroid-induced psychosis in an HIV patient with thrombocytopenia, fever without etiology, residual positive SARS-CoV-2 PCR test, low O2 pulse oximetry due to oversedation and neuroleptic malignant syndrome. There was no mortality.ConclusionsPatients in psychiatric hospitalization wards suffer from a great diversity of infectious problems during their stay with conditions that simulate infections. An antibiotic surveillance system can detect half of these conditions. The infectious diseases visits allow for advising or reorienting of the study and modifying the antibiotic treatment.

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