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The purpose of this research study is to evaluate the drug gabapentin (Neurontin®) for its ability to reduce postoperative pain, the need for morphine-like pain medication, and the severity and frequency of postoperative nausea and vomiting in laparoscopic gastric bypass surgery patients.
The occurrence of morbid obesity is at epidemic proportions in the United States. Laparoscopic gastric bypass is an effective means of safely facilitating patient weight loss and thereby drastically reducing the prevalence and severity of many future health complications . However, managing morbidly obese surgical patients poses certain obstacles for anesthesiologists, including a high incidence of obstructive sleep apnea .
Laparoscopic gastric bypass, like all surgical interventions, has associated postoperative challenges including pain management and prevention/control of postoperative nausea and vomiting. To assure the highest patient satisfaction, all areas of patient comfort must be addressed. However, with pain management in morbidly obese patients, caution must be used when administering opioids, as they can have an increasing effect of respiratory depression in patients already at risk due to obstructive sleep apnea . Gastric bypass is also associated with a significant incidence of protracted postoperative nausea and vomiting . Therefore, regimens that address both patient safety and patient comfort are desired.
Gabapentin (Neurontin) is an alkylated analog of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) that has been FDA approved for the treatment of seizures, headaches fibromyalgia and chronic neuropathic pain due to various etiologies . Many randomized controlled trials have been performed with perioperative gabapentin [6-10]. The effect of perioperative administration of gabapentin on postoperative pain and opioid consumption has been extensively studied and several meta-analyses have been published in the last several years examining to overall findings of these studies. The general consensus is that gabapentin has anti-hyperalgesic and opioid-sparing properties and may also reduce the incidence of postoperative nausea and vomiting [5, 11-15]. Most research has shown that gabapentin is beneficial in the treatment of postoperative pain, but some show neither positive nor negative effects. There has been no evidence that gabapentin is detrimental or poses any risks to the postoperative patient. However, gabapentin has not been specifically studied in bariatric surgery. Therefore, the purpose of this study is to explore the hypothesis that perioperative gabapentin has anti-hyperalgesic and opioid-sparing properties, thus increase patient comfort and satisfaction by decreasing pain scores and reducing the adverse effects of opioids, such as postoperative nausea and vomiting.
This is a randomized, double-blind and placebo controlled study, which will be performed in adult laparoscopic gastric bypass patients coming to surgery for morbid obesity. The major end-points of analyses are intraoperative and postoperative opioid requirements and the incidence of nausea and vomiting in the postoperative period.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
Gabapentin, Placebo, Gabapentin
Medical University of South Carolina
Enrolling by invitation
Medical University of South Carolina
Published on BioPortfolio: 2014-08-27T03:22:45-0400
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The condition of weighing two, three, or more times the ideal weight, so called because it is associated with many serious and life-threatening disorders. In the BODY MASS INDEX, morbid obesity is defined as having a BMI greater than 40.0 kg/m2.
A status with BODY WEIGHT that is grossly above the acceptable or desirable weight, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).
Surgical procedures aimed at producing major WEIGHT REDUCTION in patients with MORBID OBESITY.
An inflatable device implanted in the stomach as an adjunct to therapy of morbid obesity. Specific types include the silicone Garren-Edwards Gastric Bubble (GEGB), approved by the FDA in 1985, and the Ballobes Balloon.
A procedure consisting of the SURGICAL ANASTOMOSIS of the proximal part of the JEJUNUM to the distal portion of the ILEUM, so as to bypass the nutrient-absorptive segment of the SMALL INTESTINE. Due to the severe malnutrition and life-threatening metabolic complications, this method is no longer used to treat MORBID OBESITY.
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