Masui. The Japanese journal of anesthesiology
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Comparative Study Clinical Trial Controlled Clinical Trial
[Postoperative nausea, vomiting and pain in laparoscopic cholecystectomy: a comparison with minilaparotomy-cholecystectomy].
Postoperative nausea, vomiting and pain were compared between laparoscopic cholecystectomy group and minilaparotomy-cholecystectomy group. All patients were women, and ranged in age from 20 to 60 years. The body mass index of the patients was less than 30, and duration of operation was within 120 minutes in both groups. ⋯ No significant differences were found in the incidence of nausea and vomiting between the group which required postoperative analgesic drugs and the group which required no postoperative analgesic drugs. These results suggest that laparoscopic operation and postoperative pain do not influence the incidence of nausea and vomiting. Postoperative pain after laparoscopic cholecystectomy is less than that after minilaparotomy-cholecystectomy.
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Randomized Controlled Trial Clinical Trial
[The effects of preoperative drinking and H2 blocker on gastric acid secretion].
We studied the effects of preoperative drinking and H2 blocker on gastric acid secretion in 63 patients (ASA I-II, > 18yrs) scheduled for afternoon surgery. Group A (n = 20), as a control, was not permitted to eat and drink from 9 pm, the day before surgery, and was then given 500 ml of maintainance fluid before anesthesia. Group B (n = 20) fasted from 9 pm the day before surgery, and was allowed to drink clear fluids until 2hs before anesthesia. ⋯ The dilution of gastric acid by the ingested fluid was not observed. We conclude that preoperative drinking does not affect gastric contents in elective operative patients. To reduce the risk of developing aspiration pneumonia, we recommend that every patient should receive an oral H2 blocker.
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The accuracy of the pulse oximeter was examined in hypoxic patients. We studied 11 cyanotic congenital heart disease patients during surgery, and compared the arterial oxygen saturation determined by both the simultaneous blood gas analysis (CIBA-CORNING 288 BLOOD GAS SYSTEM, SaO2) and by the pulse oximeter (DATEX SATELITE, with finger probe, SpO2). Ninty sets of data on SpO2 and SaO2 were obtained. ⋯ In particular, pulse oximetry at low levels of saturation (SaO2 below 80%) was not as accurate as at a higher saturation level (SaO2 over 80%). There was a positive correlation between SpO2 and SaO2 (linear regression analysis yields the equation y = 0.68x + 26.0, r = 0.93). In conclusion, the pulse oximeter is useful to monitor oxygen saturation in constantly hypoxic patients, but the values thus obtained should be compared with the values measured directly when hypoxemia is severe.
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Case Reports
[Transient complete left bundle branch block during epidural anesthesia with mepivacaine].
A 65-year-old woman with ovarian tumor was scheduled for abdominal total hysterectomy and bilateral adnexectomy under epidural anesthesia. Preoperative examinations revealed no abnormalities including ECG. Twenty minites after the epidural injection of mepivacaine, widened QRS complexes, which were diagnosed as complete left bundle branch block (CLBBB) later, appeared on ECG. ⋯ The effective refractory period (ERP) is shortened with the increase in HR, but the shortning of ERP varies in different part of the cardiac conduction system. In tachycardia, ERP of left bundle branch is longer than that of right one. Because the cardiac conduction system is depressed by local anesthetics, it is speculated that ERP of left bundle branch is elongated further by mepivacaine and CLBBB appeared in this case.
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We investigated the effect of epidural buprenorphine on diaphragmatic function using respiratory inductive plethysmography (RIP) in seven healthy patients after upper abdominal surgery. After surgery, changes of rib cage contribution to tidal volume (%RC) increased significantly from 25.3 +/- 7.3 (mean +/- SD) to 50.7 +/- 14.8% (P < 0.05). ⋯ But, %RC was unchanged compared to the value before the injection. These results indicate that pain relief by epidural buprenorphine does not improve diaphragmatic function after upper abdominal surgery.