Question

All the following are used as sclerosing agents EXCEPT

• A. Alcohol
• B. Acetic acid
• C. Crysolate
• D. Polidocanol

Hint:

Think about which of these agents is used for cervical screening or as an antiseptic, not for closing off veins.

Answer 1

The Correct Option is B

Step 1: Recall what a sclerosing agent does.
A sclerosing agent is injected into a varicose vein to irritate its inner lining, which then triggers clotting and fibrosis, closing the vein permanently. This is the basis of sclerotherapy for varicose veins.

Step 2: List the known sclerosing agents.
Common agents used clinically include absolute alcohol, hypertonic saline, sodium tetradecyl sulphate, sodium morrhuate, chromated glycerin type solutions, and polidocanol. Each of these directly damages the vein wall lining to close it off.

Step 3: Analyze each option.

(A) Alcohol: Absolute alcohol is a recognized sclerosing agent, used to damage the vein lining and induce fibrosis. This is a true sclerosant.

(B) Acetic acid: Acetic acid is not used as a venous sclerosing agent. It is used in other clinical settings instead, such as applying it to the cervix during screening to highlight abnormal tissue, or as an antiseptic wash, not to close off varicose veins.

(C) Crysolate: This agent is used clinically as a sclerosing solution for varicose veins.

(D) Polidocanol: This is one of the most widely used modern sclerosing agents for varicose veins and spider veins. This is a true sclerosant.

Step 4: Final answer.
The agent that is NOT used as a sclerosing agent is acetic acid.
\[ \boxed{\text{Acetic acid}} \]