Persistent Postoperative Pain Incidence With Long Term Perioperative Gabapentin Used

Descripción detallada

This study will be: controlled, prospective, randomized and double blind. Its main objective will be to evaluate the pre and postoperative Gabapentin efficiency in orally doses and long term used of it in order to prevent or decrease persistent postoperative pain (PPP) in surgeries with high incidence of it (Pain). Patients will be randomly divided in two branches; one of them will take 600 mg of Gabapentin twice a day and the other group will take Placebo (twice a day also). Both groups of patients will have to take one pill the day before the surgery (300 mg) and other pill on the surgery day (300mg). After that, the patients will have to continue this treatment during 30 days (two doses per day of Gabapentin or placebo). After the surgery and after taking the second pill, it will be evaluated: postoperative sharp pain, sickness, vomiting, sedation and adverse effects. Patients will be evaluated in the pain treatment office (consulting room) the following times: 1. 30 days after the surgery. (taking drugs suspended) 2. 3 month after the surgery. 3. 6 months after the surgery. 4. 12 months after the surgery This monitoring treatment will be done in order to evaluate the presence or absence of persistent postoperative pain (PPP).