Obesity surgery
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Randomized Controlled Trial Comparative Study
Postoperative results after desflurane or sevoflurane combined with remifentanil in morbidly obese patients.
This randomized prospective study with blinded postanesthesia care unit (PACU) observers compared the recovery profiles in morbidly obese patients who received sevoflurane or desflurane for maintenance of anesthesia in combination with a remifentanil target controlled infusion (TCI). ⋯ No clinically relevant difference was found in recovery in the PACU between morbidly obese patients anesthetized with desflurane or sevoflurane. Both agents resulted in satisfactory recovery in morbidly obese patients.
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Preoperative assessment of blood volume (BV) is important for patients undergoing surgery. The mean value for indexed blood volume ((In)BV) in normal weight adults is 70 mL/kg. Since (In)BV decreases in a non-linear manner with increasing weight, this value cannot be used for obese and morbidly obese patients. We present an equation that allows estimation of (In)BV over the entire range of body weights.
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Quality of life (QoL) is an important measure of outcome after bariatric surgery. Impairment in QoL has been well documented in morbidly obese patients before undergoing bariatric surgery and has been shown to improve significantly within 3 months after the operative intervention. Improvement in QoL should be recognized as one of the benefits of bariatric surgery that can be quantified.
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Comparative Study
Effect of laparoscopic versus open gastric bypass surgery on postoperative pain and bowel function.
This study was designed to assess postoperative pain and bowel function in morbidly obese patients undergoing Roux-en-Y gastric bypass (RYGBP) performed either by open or laparoscopic technique. ⋯ The laparoscopic RYGBP operation was associated with less postoperative pain and morphine consumption than the open RYGBP, thereby facilitating an earlier recovery of intestinal motility.
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Recent national efforts have focused on improving patient safety in surgical procedures including examining adverse events. An adverse event in laparoscopic Roux-en-Y gastric bypass (LRYGBP) which has not received much scrutiny involves orogastric tube complications during gastric pouch formation. ⋯ Orogastric tube complications can occur during laparoscopic RYGBP, but are seldom reported and can be associated with significant morbidity. Treatment options are dependent upon the situation. More importantly, prevention strategies must include constant communication with the anesthesiologist and removal or manipulation of an OGT prior to stapling or suturing, use of large bore OGTs for increased visual or tactile recognition, retraction of the OGT proximal to the anastomosis during gastrojejunal construction and employing alternatives to esophageal temperature probes (i.e. Foley temperature probes).