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Delirium, defined as an acute disorder of attention and global cognitive function  is a common, serious and potentially preventable source of morbidity and mortality in  hospitalized elderly patients.  Different studies have shown that prolonged post operative ICU stay contributes to occurrence of delirium OBJECTIVE: To assess the incidence of post operative delirium in elderly patients who needed prolonged ICU stay after  undergoing a major cardiac surgery (coronary artery bypass grafting). MATERIALS AND METHODS: Prospective cohort study, Study Period: 1 ½ years. Using a prepared questionnaire after obtaining fully informed written consent. 3 visits for each patient: 1) before surgery, 2) in the ICU: 48 hours after surgery and 3) In ward after shifting out from ICU. Prolonged ICU stay was defined as admission more than 3 days in ICU. The details from nursing staff and care givers were taken. RESULTS: Out of total 250 patients included in the study, 43 (17.2%) patients developed post operative delirium. 32 (26%) out of 19 patients who needed prolonged ICU stay developed post operative delirium compared to 11 (8.7%) out of 116 patients who spent less than 3 days in ICU in post operative period. (p Value: <0.001). Prolonged ICU stay contributes to post operative delirium and measures have to be instituted to shift out the patient from ICU at the earliest after stabilization.

international journal of medical science and clinical invention

The study of incidence of post operative delirium in geriatric patients who needed prolonged ICU stay after undergoing a major cardiac surgery in a tertiary care hospital