Example of type-I respiratory failure is: March 2010
**Core Concept**
Type-I respiratory failure, also known as hypoxemic respiratory failure, is characterized by low oxygen levels in the blood (hypoxemia) with either normal or low carbon dioxide levels. This condition is often caused by **ventilatory** problems or **gas exchange** abnormalities.
**Why the Correct Answer is Right**
Since the correct answer choice is not provided, we will discuss the general concept. Type-I respiratory failure typically occurs when there is an issue with the lungs' ability to exchange oxygen and carbon dioxide, such as in **pneumonia**, **pulmonary embolism**, or **acute respiratory distress syndrome (ARDS)**.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, it's challenging to provide a precise explanation.
**Option B:** Similarly, option B's details are not provided.
**Option C:** Option C's specifics are also missing.
**Option D:** The same applies to option D.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that type-I respiratory failure is characterized by a **P/F ratio** (partial pressure of oxygen in arterial blood/fraction of inspired oxygen) of less than 400, indicating impaired gas exchange.
**Correct Answer:** Correct Answer: D. Pulmonary Embolism