Anesthesia and analgesia
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Anesthesia and analgesia · Jun 2007
ReviewMagnesium as an adjuvant to postoperative analgesia: a systematic review of randomized trials.
Randomized trials have reached different conclusions as to whether magnesium is a useful adjuvant to postoperative analgesia. ⋯ These trials do not provide convincing evidence that perioperative magnesium may have favorable effects on postoperative pain intensity and analgesic requirements. Perioperative magnesium supplementation prevents postoperative hypomagnesemia and decreases the incidence of postoperative shivering. It may be worthwhile to further study the role of magnesium as a supplement to postoperative analgesia, since this relatively harmless molecule is inexpensive, and the biological basis for its potential antinociceptive effect is promising.
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Anesthesia and analgesia · Jun 2007
Randomized Controlled Trial Comparative StudyAn evaluation of a single dose of magnesium to supplement analgesia after ambulatory surgery: randomized controlled trial.
Previous studies have suggested that magnesium may be a useful adjuvant to postoperative analgesia. ⋯ In patients undergoing ambulatory ilioinguinal hernia repair or varicose vein operations under general anesthesia supplemented with other analgesic adjuvants, pretreatment with IV magnesium sulfate 4 g has no impact on postoperative pain and analgesic consumption.
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Anesthesia and analgesia · Jun 2007
Randomized Controlled Trial Multicenter Study Comparative StudyThe influence of timing of administration on the analgesic efficacy of parecoxib in orthopedic surgery.
Parecoxib, a selective cyclooxygenase-2 inhibitor, may reduce postoperative pain without increasing bleeding when administered before surgery. ⋯ Administration of parecoxib before hip arthroplasty did not provide preemptive analgesia. There was a trend towards improved analgesia immediately after surgery with preincision administration, consistent with the expected time course of nonsteroidal antiinflammatory drug's effect. Perioperative parecoxib administration, consisting of two injections spaced 12 h apart, improved postoperative analgesia over the first 24 h without increasing bleeding.
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Anesthesia and analgesia · Jun 2007
Randomized Controlled Trial Comparative StudyThe influence of neck flexion and extension on the distribution of contrast medium in the high thoracic epidural space.
For safe and effective thoracic epidural analgesia (TEA), it is important to control the level of TEA and to identify factors that influence its spread. In this study, we observed the distribution of contrast injected into the high thoracic epidural space during neck flexion and extension. ⋯ Cranial spread of contrast in the high thoracic epidural space is limited. However, neck flexion increases cranial spread. These results suggest that when TEA is high, the tip of the epidural catheter should be located at the upper part of the level to be blocked and that neck flexion may cause an unwanted cervical block.