All true about accidental intra aerial injection of Thiopentone except:-: (A) Immediate intense vasoconstriction and excruciating pain, (B) Cause is precipitations of thiopental crystals in the aerial vassals, (C) To relieve pain we have to immediately remove the misplaced aerial cannula., (D) Sympathectomy of the upper extremity produced by Stellate ganglion block may relieve vasoconstriction.
Answer is C. The accidental intra aerial injection of drug due to wrongly placed cannula M/N 1. Leave the cannula in situ 2. Intra aerial injection of heparin 3. Lidocaine, papaverine phenoxybenzamine injected 4. Stellate ganglion block