A 25 year old male with roadside accident underwent debridement and reduction of fracture both bone right forearm under axillary block. On the second postoperative day the patient complained of persistent numbness and paresthesia in the right foream and hand. The commonest cause of this neurological dysfunction could be all of the following, except:
|A||Crush injury to hand and lacerated nerves|
|B||A tight cast opdressing|
|C||Systemic toxicity of local anesthetics|
Systemic toxicity of local anesthetics
The common causes of neurologic dysfunction in this would be:
a. Injury itself.
b. Surgical intervention.
c. Tourniquet's excessive pressure or extra time.
d. Tight cast/bandage.
e. Local toxicity of local anaesthetics (not the systemic toxicity). Systemic toxicity will have immediate presentation (not on 2nd postoperative day) and presentation of systemic' toxicity will be light headiness, dizziness, tinnitus, perioral numbness, convulsion, coma, hypotension or any arrhythmia.