[Cardiovascular changes after intubation and at the time of incision during nitrous oxide-oxygen anesthesia with epidural buprenorphine].
The cardiovascular changes after intubation and at the time of incision under nitrous oxide-oxygen anesthesia with epidural buprenorphine (Bn) were examined. The subjects were 56 patients who underwent abdominal surgery. The patients were divided into two groups in terms of the epidural drugs used, i.e., group I (Bn 0.2 mg + saline 9 ml, n = 31) and group II (Bn 0.2 mg + 1% lidocaine 10 ml, n = 25). The systolic pressure increased significantly (P less than 0.05) to 169 +/- 29 mmHg (mean +/- SD) after intubation and to 162 +/- 28 mmHg after incision in group I, with no decrease in blood pressure during the non-stimulation period. In group II, although there was a significant decrease in blood pressure to 114 +/- 24 mmHg just before incision (P less than 0.05), no elevation of blood pressure was noted after intubation or incision. There was no significant difference between groups I and II with regard to the heart rate and respiratory rate. We were unable to block the cardiovascular reaction after intubation and incision under nitrous oxide-oxygen anesthesia with epidural Bn, requiring local anesthetics or volatile anesthetics. This method, however, is useful for patients in whom a fall of blood pressure should be avoided, e.g., for those with hypovolemia.
Iwade
M
M
Department of Anesthesiology, Tokyo Women's Medical College Daini Hospital.
Satoh
K
K
Ohe
Y
Y
D000005:Abdomen / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015360:Analgesia, Epidural; D000769:Anesthesia, Inhalation; D002047:Buprenorphine; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007442:Intubation, Intratracheal / Q000009:adverse effects*; D008875:Middle Aged; D009609:Nitrous Oxide; D010100:Oxygen
D002047:Buprenorphine; D009609:Nitrous Oxide; D010100:Oxygen