A Comparative Study of Retroclavicular and Classical Coracoid Infraclavicular Brachial Plexus Blocks Using 0.5% Ropivacaine in Patients Undergoing Forearm Surgery.

1 onset of motor block.

时间窗: Intraoperatively

Onset of motor block assess using modified bromage scale Score Grade of motor blockade(Modified bromage scale) 0 Normal muscle function with full range of movement of elbow, wrist and fingers . 1 Decreased muscle power so that patient can move fingers and /or wrist only 2. Complete loss of muscle function with no movement in fingers/wrist

Onset of sensory Block

时间窗: Intraoperatively l

Onset of sensory block assess using pin prick method Grade of sensory blockade Score 1. Feeling sharp pinprick (no block) 0 2. Blunt sensation on pinprick (partial block 1 3. No sensation on pinprick (complete block) 2

Block adequate for surgery

时间窗: Intraoperatively

Block adequate for surgery when there is no need for local infiltration and general anesthesia

Needle Shadow and shaft visibility using 5 point likert scale.

时间窗: Intraoperatively

NEEDLE SHADOW VISIBILITY 5-POINT LIKERT SCALE SCORE Needle tip visibility 1. Very poor 2. Poor 3. Fair 4. Good 5. Very good 5-POINT LIKERT SCALE SCORE Needle Shaft visibility 1. None of the shaft visualized 2. Only a small segment of the shaft visualized 3. Less than half of the shaft visualized 4. Almost all of the shaft visualized 5. The entire shaft visualized