## **Core Concept**
Pulmonary artery pressure (PAP) refers to the blood pressure in the pulmonary arteries, which carry deoxygenated blood from the heart to the lungs. It is an important parameter in assessing cardiovascular and respiratory health. The normal pulmonary artery pressure range is crucial for efficient gas exchange and right heart function.

## **Why the Correct Answer is Right**
The correct answer, , indicates that the normal pulmonary artery pressure is approximately 20/8 mmHg. This value represents the systolic and diastolic pressures in the pulmonary artery, respectively. The mean pulmonary artery pressure (mPAP) is typically around 14 mmHg. These values are essential for diagnosing and managing conditions like pulmonary hypertension, where the pressure in the pulmonary arteries is elevated.

## **Why Each Wrong Option is Incorrect**
* **Option A:**
This option suggests a much higher pressure, which could be indicative of pulmonary hypertension but is not within the normal range.
* **Option B:**
Similar to option A, this suggests elevated pressures not typical of normal pulmonary artery pressures.
* **Option D:**
This option presents pressures that are too low and not representative of normal pulmonary artery pressures.

## **Clinical Pearl / High-Yield Fact**
A key clinical point to remember is that pulmonary hypertension is defined as a mean pulmonary artery pressure (mPAP) of 20 mmHg or higher at rest. Early detection and management of pulmonary hypertension are critical for improving patient outcomes.

## **Correct Answer:** . 20/8 mmHg