Question:medium
All the following are used as sclerosing agents EXCEPT
All the following are used as sclerosing agents EXCEPT
Show Hint
Think about which of these agents is used for cervical screening or as an antiseptic, not for closing off veins.
Updated On: Jul 8, 2026
- Alcohol
- Acetic acid
- Crysolate
- Polidocanol
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Sclerotherapy works by injecting a chemical straight into a vein so its inner lining gets damaged, clots, and eventually turns into a fibrous cord that carries no blood. The question wants the one substance on the list that is not used this way.
Step 2: Key Formula or Approach:
Go through each agent and ask if its known clinical use is to injure a vein wall for closure, or if it is used for something else entirely.
Step 3: Detailed Explanation:
Alcohol, in its absolute form, is injected into veins precisely because it is strongly irritant to the vein lining, so it is a genuine sclerosant.
Crysolate is likewise used as an injectable sclerosing solution for varicose veins in clinical practice.
Polidocanol is a very commonly used modern sclerosant, sold for both small spider veins and larger varicose veins.
Acetic acid, on the other hand, has a completely different set of clinical uses. It is painted on the cervix during screening because it turns abnormal tissue white, and it is used as a wash for infected wounds or ears. It is not injected into veins to scar them shut.
Step 4: Final Answer:
Acetic acid is the odd one out, since it is not used as a sclerosing agent for varicose veins.
\[ \boxed{\text{Acetic acid}} \]
Sclerotherapy works by injecting a chemical straight into a vein so its inner lining gets damaged, clots, and eventually turns into a fibrous cord that carries no blood. The question wants the one substance on the list that is not used this way.
Step 2: Key Formula or Approach:
Go through each agent and ask if its known clinical use is to injure a vein wall for closure, or if it is used for something else entirely.
Step 3: Detailed Explanation:
Alcohol, in its absolute form, is injected into veins precisely because it is strongly irritant to the vein lining, so it is a genuine sclerosant.
Crysolate is likewise used as an injectable sclerosing solution for varicose veins in clinical practice.
Polidocanol is a very commonly used modern sclerosant, sold for both small spider veins and larger varicose veins.
Acetic acid, on the other hand, has a completely different set of clinical uses. It is painted on the cervix during screening because it turns abnormal tissue white, and it is used as a wash for infected wounds or ears. It is not injected into veins to scar them shut.
Step 4: Final Answer:
Acetic acid is the odd one out, since it is not used as a sclerosing agent for varicose veins.
\[ \boxed{\text{Acetic acid}} \]
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