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Gabapentin has been very effective at treating pain after knee and hip operations, hysterectomies, and many other types of operations. A previous study at the investigators' hospital found that a single pre-operative dose of 600mg gabapentin produced a significant reduction in pain after caesarean section. However, 19% complained of sedation. The purpose of this study is to see whether a reduced dose of gabapentin will produce a similar improvement in pain scores while avoiding adverse effects such as sedation or dizziness. The objective of this study is to compare the efficacy of a single pre-operative oral dose of gabapentin 300mg, versus 600mg and placebo in women undergoing Cesarean section. The investigators' hypothesis is that gabapentin 300mg will result in decreased pain scores similar to gabapentin 600mg, but with reduced side effects.
Post-operative pain is the greatest fear of women who undergo Cesarean section, and despite current analgesic regimens, this pain can be severe, impeding the mother's recovery and her ability to bond with and breastfeed her new infant. Opioids are the mainstay of treatment currently, and, although effective, these drugs have significant adverse effects, including sedation, nausea, vomiting and constipation. Non-steroidal anti-inflammatory drugs (NSAIDs) can reduce opioid consumption, but also have side effects, and are contra-indicated in a significant number of patients. Therefore there remains considerable scope to improve post-Cesarean analgesia.
It has been shown that severe acute post-operative pain after Cesarean section increases the risk of developing chronic pain and post-partum depression. A recent study showed that up to 18% of women have persistent pain after Cesarean section, and that severe acute post-operative pain is a significant risk factor.
Gabapentin is used widely to treat chronic pain, and has been demonstrated to be effective at treating acute post-operative pain following a variety of surgical procedures, with significant reductions in opioid consumption. Side effects are uncommon; the most likely are dizziness and sedation. Gabapentin does cross the placenta and into breast milk, but there is no evidence of adverse maternal or neonatal effects in women taking gabapentin during pregnancy. Gabapentin has been used successfully to treat pain in neonates.
A recent study at Mount Sinai Hospital compared a single pre-operative dose of 600mg gabapentin versus placebo in women undergoing Cesarean section. Women in the gabapentin group reported significantly improved pain scores on movement up to 48 hours after surgery. Side effects were similar in both groups apart from an increase in somnolence in the gabapentin group.
The objective of this study is to compare the efficacy of a single pre-operative oral dose of gabapentin 300mg, versus 600mg and placebo in women undergoing Cesarean section. Our hypothesis is that gabapentin 300mg will result in decreased pain scores similar to gabapentin 600mg, but with reduced side effects. We have designed a randomized, double-blind, placebo-controlled study which will aim to answer these questions. Aside from the administration of gabapentin one hour prior to surgery, there are no other changes to the standard protocol of anaesthetic care. Women will be followed up for 48 hours after surgery for assessment of pain scores and overall satisfaction. A further follow-up at three months will determine the incidence of chronic pain.
Few studies have examined the incidence of chronic pain following Cesarean section, and none have examined the impact of pre-emptive analgesia using gabapentin on the incidence of chronic pain following Cesarean section. As the rate of Cesarean section continues to increase, and there remain significant problems with current analgesic regimens, the use of gabapentin, a drug with proven effectiveness in post-surgical pain and with limited side effects, has the potential to considerably improve acute and chronic post-Cesarean pain, and lead to a widespread change in clinical practice.
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
lactose, Gabapentin 300mg, Gabapentin 600mg
Mount Sinai Hospital
Samuel Lunenfeld Research Institute, Mount Sinai Hospital
Published on BioPortfolio: 2014-08-27T03:14:57-0400
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The condition resulting from the absence or deficiency of LACTASE in the MUCOSA cells of the GASTROINTESTINAL TRACT, and the inability to break down LACTOSE in milk for ABSORPTION. Bacterial fermentation of the unabsorbed lactose leads to symptoms that range from a mild indigestion (DYSPEPSIA) to severe DIARRHEA. Lactose intolerance may be an inborn error or acquired.
A measure of a patient's ability to break down lactose.
Plasmids which determine the ability of a bacterium to ferment lactose.
An enzyme of the transferase class that catalyzes the transfer of galactose from UDPgalactose to glucose, forming lactose. The enzyme is a complex of the enzyme N-ACETYLLACTOSAMINE SYNTHASE and alpha-lactalbumin; the latter protein is present in lactating mammary gland cells where it alters the usual specificity of the former to make lactose synthesis the preferred reaction. (Dorland, 28th ed) EC 188.8.131.52.
An enzyme which catalyzes the hydrolysis of LACTOSE to D-GALACTOSE and D-GLUCOSE. Defects in the enzyme cause LACTOSE INTOLERANCE.
An anesthesiologist (US English) or anaesthetist (British English) is a physician trained in anesthesia and perioperative medicine. Anesthesiologists are physicians who provide medical care to patients in a wide variety of (usually acute) situations. ...
Pain is defined by the International Association for the Study of Pain as “an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage”. Some illnesses can be excruci...
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