Aim. Comparing the effectivity of prilocaine and prilocaine alkalinized with 8.4% NaHCO3 in terms of sensory and motor block\nonset and termination durations in RIVA technique considering patients� satisfaction and tolerance with application of tourniquet\nundergoing hand-wrist surgery. Materials and Methods. 64 patients were randomised into two groups. First group (Group P) was\nadministered prilocaine and second group (Group PN) was administered prilocaine + %8.4 NaHCO3. Sensory and motor block\nonset and termination times and onset of tourniquet pain were recorded. Results. No significant difference was found between the\ntwo groups in terms of onset and termination of sensory block and the onset ofmotor block. The duration of the motor block was\nlonger inGroupPNthan inGroup P(???? < 0.05). Tourniquet pain was more intense in Group P (???? = 0.036). InGroupPN, the use of\nadditional drugs was recorded at a lower rate and patients� satisfaction was higher than Group P. Conclusion. In the present study,\nit was established that alkalinization of prilocaine had no effect on the duration of sensory block and it prolonged the duration\nof motor block, increased patients� satisfaction, and decreased tourniquet pain. It is our suggestion that future studies should be\ncarried out on the issue by using different volumes.
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