title: Incidence and predictors of post-cardiotomy delirium.
abstract: OBJECTIVE
  To determine the incidence and predictors of delirium after cardiac surgery.
  
  
  METHODS
  A prospective, observational study of postcardiotomy surgical patients was conducted during a 5 month period at the Minneapolis, MN, VAMC.
  
  
  RESULTS
  Of the 53 patients who completed the study, 12 patients (23%) met criteria for postoperative delirium and 18 patients (34%) met criteria for postoperative subsyndromal delirium. Significant predictors of postoperative delirium included a history of cerebrovascular disease (Charlson Index item, VA CICSP), high medical comorbidity (VA morbidity risk score, Charlson Index), increased preoperative creatinine level, and an increased preoperative pain rating. When delirium and subsyndromal delirium patients were combined, a history of cerebrovascular disease, left ventricular dysfunction, or diabetes predicted the development of delirious symptoms.
  
  
  CONCLUSIONS
  Incident delirium occurred in 23% of patients after cardiac surgery and incident delirium symptoms, in 57%. The strongest predictor of both incident delirium and delirium symptoms was a history of cerebrovascular disease.
authors.affiliation: Makati Medical Center, Manila, Philippines.
authors.forename: Marie Cecilia
authors.initials: MC
authors.lastname: Tan
authors.forename: Anne
authors.initials: A
authors.lastname: Felde
authors.forename: Michael
authors.initials: M
authors.lastname: Kuskowski
authors.forename: Herbert
authors.initials: H
authors.lastname: Ward
authors.forename: Rosemary F
authors.initials: RF
authors.lastname: Kelly
authors.forename: A Selcuk
authors.initials: AS
authors.lastname: Adabag
authors.forename: Maurice
authors.initials: M
authors.lastname: Dysken
mesh_terms: D000368:Aged; D006348:Cardiac Surgical Procedures / Q000009:adverse effects*; D002561:Cerebrovascular Disorders / Q000453:epidemiology; D015897:Comorbidity; D003693:Delirium / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D015994:Incidence; D008875:Middle Aged; D008910:Minnesota / Q000453:epidemiology; D011446:Prospective Studies; D012044:Regression Analysis; D012307:Risk Factors