title: [Determinants of prolonged mechanical ventilation after cardiac surgery].
abstract: OBJECTIVE
  This study aimed to examine factors that delay weaning from ventilation after cardiac surgery.
  
  
  METHODS
  A retrospective examination was made on 1,033 patients who had undergone cardiac surgery through a midsternal incision between January 2009 and July 2011. The items examined were duration of postoperative ventilation, patient's background, and other surgical information. If patients were weaned within 24 hours from intensive care unit (ICU) admission, they were included in the timely weaning group. If patients required 24 hours or more to be weaned, they were included in the delayed weaning group.
  
  
  RESULTS
  There was a relationship between prolonged ventilation and the following factors: emergency surgery, history of arrhythmia, history of motor system disorder, preoperative estimated glomerular filtration rate (eGFR), preoperative New York Heart Association (NYHA) classification, preoperative left ventricular ejection fraction (LVEF), operative method, operative time, blood loss, intraoperative fluid management, and number of days from surgery until achievement of independent gait. The independent factors delaying extubation were emergency surgery, preoperative NYHA classification, preoperative LVEF, operative method, operative time, blood loss, and intraoperative fluid management(p<0.05).
  
  
  CONCLUSIONS
  Surgical invasiveness and preoperative heart failure were involved in the prolonged ventilation after cardiac surgery.
authors.affiliation: Department of Rehabilitation, Fukuyama Cardiovascular Hospital, Fukuyama, Japan.
authors.forename: Keisuke
authors.initials: K
authors.lastname: Oura
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Morisawa
authors.forename: Kenta
authors.initials: K
authors.lastname: Kamisaka
authors.forename: Masakazu
authors.initials: M
authors.lastname: Saitoh
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Hanafusa
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yuguchi
authors.forename: Masayuki
authors.initials: M
authors.lastname: Tahara
authors.forename: Kouji
authors.initials: K
authors.lastname: Sakurada
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Takahashi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006348:Cardiac Surgical Procedures; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D012121:Respiration, Artificial; D012189:Retrospective Studies; D055815:Young Adult