Details

Study Design. Randomized, double-blinded, placebo-controlled study. Randomization and Blinding. Participants will be randomly assigned to either the metformin or placebo group in a 1:1 ratio using block randomization. A computer-generated randomization sequence will be created with the R software (version 4.4.1) and the blockrand package(7). This sequence will be securely stored and accessible only to the study statistician. Treatment packets will be pre-labeled with unique numbers matching the randomization sequence. When a patient qualifies for the study, they will receive a numbered packet corresponding to their assignment. To ensure objectivity, neither participants nor study staff will know which number corresponds to metformin or placebo-only the statistician will have access to this information. Setting: Neurosurgery department at Menoufia University hospitals at Menoufia University. Instruments: We will assess the patient using AISA grade, Visual Analog Scale (VAS) and the Neuropathic Pain Symptom Inventory (NPSI) (8-10). Data collection: It will be done by data collaborators under the leadership of the investigators in: Neurosurgery department at Menoufia University hospitals at Menoufia University.