Which of the following is not a cause of Cor pulmonale: March 2005
**Core Concept**
Cor pulmonale refers to the alteration of the structure and function of the right ventricle of the heart as it struggles to pump blood through the lungs that are damaged. This condition is often caused by **pulmonary hypertension**, which can result from various factors affecting the lungs.
**Why the Correct Answer is Right**
The correct answer choice is not provided, but generally, cor pulmonale is caused by conditions that lead to increased resistance in the pulmonary vasculature, such as chronic obstructive pulmonary disease (COPD), pulmonary embolism, and cystic fibrosis. The mechanism involves increased workload on the right heart, leading to **hypertrophy** and eventual **failure**.
**Why Each Wrong Option is Incorrect**
**Option A:** Could be a condition that affects the lungs, potentially leading to cor pulmonale.
**Option B:** May also be related to lung disease, causing pulmonary hypertension.
**Option C:** Could potentially be a lung condition contributing to cor pulmonale.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that cor pulmonale is a condition secondary to pulmonary disease, and its diagnosis should prompt a search for the underlying lung condition.
**Correct Answer:** Not provided in the query.