VPT-0102
QUESTION
The speed of local anaesthetic solution in tissues can be safely increased by?
OPTIONS
(A) Addition of hyaluronidase enzyme to the local anaesthetic solution
(B) Addition of adrenaline to the local anaesthetic solution
(C) Addition of atropine sulphate to the local anaesthetic solution
(D) Increasing the concentration of the local anaesthetic solution
ANSWER
(A) Addition of hyaluronidase enzyme to the local anaesthetic solution
EXPLANATION
Hyaluronidase breaks down hyaluronic acid in connective tissue and increases the spread and diffusion of a local anesthetic solution through tissues. Adrenaline prolongs local action by vasoconstriction, while atropine and simply increasing concentration do not safely accelerate tissue spread in the same way.
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Veterinary Pharmacology and Toxicology · 167 Questions