Cardiothoracic Anesthesia, Respiration and Airway

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• 作者：Jacobsohn Eric (1)
  Trevorx W. R Lee (2)
  Ryan J Amadeo (2)
  Paul H Syslak (3)
  Roland G Debrouwere (2)
  Dean Bell (2)
  P. Alan Klock (4)
  Heidi Tymkew (1)
  Michael Avidan (1)
  
• 刊名：Canadian Journal of Anesthesia/Journal canadien d'anesth篓娄sie
• 出版年：2005
• 出版时间：October 2005
• 年：2005
• 卷：52
• 期：8
• 页码：848-857
• 全文大小：198KB
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• 作者单位：Jacobsohn Eric (1)
  Trevorx W. R Lee (2)
  Ryan J Amadeo (2)
  Paul H Syslak (3)
  Roland G Debrouwere (2)
  Dean Bell (2)
  P. Alan Klock (4)
  Heidi Tymkew (1)
  Michael Avidan (1)
  
  1. Departments of Anesthesiology and Surgery, Washington University School of Medicine, 660 South Euclid Drive, Campus, Box 8054, 63110, St. Louis, Missouri, USA
  2. Departments of Anesthesia, University of Manitoba, Winnipeg, Manitoba, Canada
  3. Departments of Anesthesia, Victoria Hospital, Winnipeg, Manitoba, Canada
  4. Departments of Anesthesiology and Surgery, University of Chicago, Chicago, Illinois, USA
  

文摘

Purpose This study was designed to examine the efficacy of low-dose intrathecal morphine (ITM) on extubation times and pain control after cardiac surgery. Methods 43 patients undergoing elective cardiac surgery were enrolled in this prospective, randomized, double-blind placebo controlled trial. Patients were given a pre-induction dose of ITM (6 μg·kg-1 per ideal body weight in 5 mL normal saline, group ITM) or 5 mL of intrathecal normal saline (group ITS). Anesthesia was induced with thiopental (3 mgkg-1), sufentanil, midazolam and rocuronium. The total allowable doses of sufentanil and midazolam for the entire case were limited to 0.5 μg·kg-1 and 0.045 mg·kg-1 respectively. Anesthesia was maintained with isoflurane before and during cardiopulmonary bypass (CPB), and with propofol after CPB. In the postanesthesia care unit, patients received nurse-administered morphine followed by patient-controlled analgesia morphine. Serial visual analogue scale pain scores, morphine use, mini-mental state examinations and pulmonary function tests were measured for 48 hr. Patient satisfaction questionnaires were completed at the time of discharge. Results Mean times to extubation from the application of dressings were short and did not differ between groups (ITM = 41.4 ± 33.0 min, ITS = 39.2 ± 37.1 min). During the first 24 hr postoperatively, the ITM group had improved pain control and a lower iv morphine requirement than the control group, both at rest and during deep breathing. Both forced expiratory volume in one second and forced vital capacity were improved in the ITM group. There were no differences in spinal-related side effects or in the overall complication rates. Patient satisfaction was high in both groups. Conclusion Low-dose ITM for cardiac surgery did not delay early extubation, but it improved postoperative analgesia and pulmonary function.