Muscle Relaxant of Depolarizing

One of the following muscle relaxant is depolarizing type: 

A. Inj. Pancuronium 
B. Inj. Tubocurarine 
C. Inj. Vecuronium 
D. Inj. Suxamethonium

Ans. D.  Inj Suxamethonium.

Important about Succinyl choline: 

• Succinylcholine is a depolarizing MR. 

• Succinylcholine causes Hyperkalemia 

• Succinylcholine causes muscle pain 

• Succinyleholine increases Intraocular pressure 

• Succinyicholine increases intragastric pressure 

• Succinylcholine increases Intracranial pressure 

• Succinylcholine triggers Malignant Hyperthermia 

• Succinyicholine causes vagal stimulation 

• Succinylcholine is the shortest acting MR 

• Succinylcholine causes dual-biphasic block 

Succinylcholine has shortest duration of action due to rapid hydrolysis by PSEUDOCHOLINESTERASE.