TO STUDY ONSET OF MOTOR BLOCKADE & MOTOR BLOCK REGRESSION PARAMETERS EFFECT IN SUPRA CLAVICULAR BRACHIAL PLEXUS BLOCK TO LOCAL ANAESTHETIC AGENT OF DEXAMETHASONE

Abstract

Background & Method: The present study conducted with an aim to study To Study Onset of motor blockade & Motor block regression parameters effect in Supra clavicular Brachial plexus block to Local Anaesthetic agent of Dexamethasone. 60 patients admitted to undergoing upper limb surgery lasting more than 90 minutes were included in the study. The elective surgical interventions were internal fixation of bones with plates and screws, excision of bone cysts, reconstructive & other surgeries involving upper limb.

Result: Comparing the heart rate pattern of both groups show statistical significance at 4th  to 7th hour of the study period although they are within an acceptable clinical range. Compared systolic blood pressure changes between two groups show statistical significance between 4th to 6th & 12th hours.

The average onset of motor blockade was 11.43±2.02 in group A & 8.29±3.32 min in group B respectively. There was statistical significance in terms of onset, sensory blockade, motor blockade & duration of analgesia between the two groups. However the average duration of analgesia were 6.77±2.13hrs & 16.38.±2.73hrs in groups A & B respectively, showed statistical significance. The group B showed prolonged analgesia produced by addition of dexamethasone to local anaesthetics.

Conclusion: In our study addition of Dexamethasone (4mg) to local anesthetics had fastest onset as well as complete blockade of sensory & motor nerves in comparison to other groups. It also showed prolonged duration of analgesia without side effects.

Keywords: Dexamethasone, Anaesthetic, Supra clavicular, Brachial plexus block.

Study Designed: Randomized & Comparative Study.