Anticoagulants are indicated in all of the following conditions except: September 2005
**Core Concept**
Anticoagulants are medications used to prevent the formation of blood clots. They are indicated in various conditions where there is a high risk of thrombosis, such as **atrial fibrillation**, **deep vein thrombosis**, and **pulmonary embolism**. The underlying principle is to prevent the extension of existing clots and the formation of new ones.
**Why the Correct Answer is Right**
Since the correct answer is not specified, let's discuss the general principle. Anticoagulants work by inhibiting the **coagulation cascade**, which involves various **clotting factors** and **enzymes**. They are effective in preventing thromboembolic events in conditions such as **atrial fibrillation** and **deep vein thrombosis**.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because anticoagulants are often used in conditions where there is a high risk of thrombosis.
**Option B:** This option is incorrect because anticoagulants can be used to prevent the extension of existing clots.
**Option C:** This option is incorrect because anticoagulants can be used to prevent the formation of new clots.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that anticoagulants are not indicated in conditions where the risk of bleeding outweighs the risk of thrombosis.
**Correct Answer:** D. Hypertension