title: Factors influencing stay in the postanesthesia care unit: a prospective analysis.
abstract: OBJECTIVE
  To identify indicators of prolonged length of stay (LOS) in the postanesthesia care unit (PACU) and to test the following hypotheses: (1) that patient age, pain medication administration at the time of PACU admission, length of surgery, and cardiovascular, pulmonary, and pain responses postoperatively predict prolonged PACU LOS and (2) that cardiovascular and pulmonary symptoms preoperatively predict cardiovascular and pulmonary symptoms postoperatively.
  
  
  METHODS
  Prospective, observational analysis.
  
  
  METHODS
  PACU of a university teaching hospital.
  
  
  METHODS
  1,067 patients scheduled for surgery with general anesthesia between February and September 1996, 18 years of age or older.
  
  
  RESULTS
  11.2% of the variation in prolonged PACU LOS can be predicted by age, pain medication at the time of PACU admission, and postoperative cardiovascular, pulmonary, and pain symptoms. A significant number of patients who did not report a prior history experienced postoperative cardiovascular and pulmonary symptoms.
  
  
  CONCLUSIONS
  Patient history and postoperative symptoms predict only a small percentage of prolonged PACU stays. Organizational factors may be a more important predictor of prolonged PACU stay. Additionally, assessment of cardiovascular and pulmonary history needs refinement to improve prediction of patient responses postoperatively.
authors.affiliation: Department of Community Health Systems, University of California, San Francisco 94143-0608, USA.
authors.forename: J A
authors.initials: JA
authors.lastname: Seago
authors.forename: S
authors.initials: S
authors.lastname: Weitz
authors.forename: S
authors.initials: S
authors.lastname: Walczak
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000762:Anesthesia Recovery Period; D002318:Cardiovascular Diseases / Q000503:physiopathology; D005260:Female; D006801:Humans; D007902:Length of Stay; D008171:Lung Diseases / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010149:Postoperative Pain / Q000188:drug therapy; D011182:Postoperative Care; D011183:Postoperative Complications; D011446:Prospective Studies; D011997:Recovery Room; D012044:Regression Analysis; D013514:Surgical Procedures, Operative