Introduction: Shoshin Beriberi is a disease generated by thiamine deficiency and is characterized by acute fulminant cardiac dysfunction (1). Objective: To highlight cardiogenic shock and hyperlactacidemia in a patient with shoshin beriberi in an intensive care unit of a general hospital. Material and method: The information was taken from the electronic medical history of the intensive care unit (ICU) of the Cayetano Heredia National Hospital (HNCH) and from laboratory and image records. Case: 22-year-old female patient, with a history of anorexia nervosa, multisystem tuberculosis (TBC); with abdominal pain, vomiting, oral intolerance, prolonged fasting, received total parenteral nutrition (TPN) without thiamine intake and with hospitalization for 40 days on the general floor; Admission to the ICU in cardiogenic shock and hyperlactacidemia with serum lactate 13.8 mmol/L. With sepsis rul...