RESUMEN
Background: according to sever pain of laminectomy operation, this double blind clinical trial study was done for accompany postoperative analgrsia with preoperative IV dexamethasone and postoperative epidural dexamethasone in patients
Materials and methods: two 45 patients groups that candidated for elective laminectomy under general anesthesia, according to double blind clinical trial study were randomly divided into two groups, one group received preoperative IV dexamethasone and second group received postoperative epidural dexamethasone and then data were gathered, analyzed with Chi - square and Mann-Whitney U and T-Student tests by spss software
Results: two groups were similar with demographic parameres as age, weigh and sex[p>0.05]. In the postoperative epidural dexamethasone severity of postoperative pain was lower [p<0.05]. The time of free pain period in the postoperative epidural dexamethasone group was longer [p<0.05]
Conclusion: usage of postoperative epidural dexamethasone in laminectomy operation can decrease of severity of pain and cause longer free pain period in patients