The study was carried out on 35 patients aged ≥ 60 years who received morphin for intravenous patient controlled analgesia (PCA) after upper abdominal surgery. Pain was evaluated by Visual Analogue Scale. Arterial blood gas, SVC, FEV1 were evaluated before and during three consecutive days after surgery. When VAS score ≥ 4, the PCA pump was programmed to deliver 2 mg initial and 1 mg bolus dose with ten - minute lockout interval. No background infusion was used. Rescue analgesia was administered with 0.5 μg/kg intravenuous fentanyl whenever the VAS score ≥ 4 at rest, despite three consecutive bolus doses. Results: 91.42% of the patients had mild or medium pain (VAS score < 4) at rest. Of these, 16.13% of the patients had no pain (VAS score from 0 to 1). VAS score was < 4 in 82.85% of the patients during coughing. Postoperative SVC, FEV1 values were significantly lower than their preoperative ones (p < 0.05). Undesirable side effects were rare and mild. None of the patients had respiratory depression or failure. Download Link: eBook có trong tuyển tập DVD Y Học http://hocvienquany.vn/Tapchi/Data/TapTin/2012_3_20nguyentrungkien.pdfhttps://www.mediafire.com/?hntqghhkmizgiq
