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ORIGINAL ARTICLE
Year : 2016  |  Volume : 10  |  Issue : 2  |  Page : 262-267

Gabapentin vs pregabalin as a premedication in lower limb orthopaedics surgery under combined spinal epidural technique


Department of Anesthesia, Government Medical College, Amritsar, Punjab, India

Correspondence Address:
Samita Bajaj
Department of Anesthesia, Government Medical College, Amritsar - 143 001, Punjab
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0259-1162.172339

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Background: Pregabalin and gabapentin are the gamma-aminobutyric acid analogs used as a part of multimodal analgesic regimen. Aim: To compare the postoperative analgesic benefits of gabapentin or pregabalin as a premedication for lower limb orthopedic surgery under combined spinal-epidural techniques. Settings and Design: Randomized double-blind study. Materials and Methods: A total of 90 patients were divided into three groups: G, P, C who received gabapentin 1200 mg, pregabalin 300 mg, and placebo, respectively 1.5 h before surgery. All patients received combined spinal-epidural block with 3 ml of 0.5% intrathecal bupivacaine. Assessment of pain was made with visual analog scale (VAS). Postoperative analgesia was provided with epidural top-ups with 2.5 ml of 0.5% bupivacaine and fentanyl 25 μg when VAS >3. Rescue analgesia in the form of injection diclofenac (75 mg) intramuscularly was given if VAS >3 even after epidural top-up. A total number of epidural top-ups, rescue analgesia, pain-free interval postspinal anesthesia, and sedation score were noted. Statistical Analysis: This was done using SPSS version 17. Mean and standard deviation were calculated using Chi-square test and analysis of variance. Results: The total postoperative analgesic time was 7.23 h in Group G, 14.80 h in Group P, and 4.17 h in Group C. A total number of epidural top-ups were 2.43 in Group G, 0.77 in Group P, and 4.43 in Group C. Conclusion: Pregabalin 300 mg and gabapentin 1200 mg significantly reduce the need of postoperative rescue analgesia, epidural top-ups, and increase the duration of postspinal anesthesia without altering hemodynamics with sedation as a major side effect.


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