Blood pressure in right ventricle
**Core Concept**
The right ventricle (RV) is a low-pressure, low-pressure chamber of the heart that receives deoxygenated blood from the body and pumps it into the pulmonary artery. As a result, the blood pressure within the RV is significantly lower compared to the left ventricle.
**Why the Correct Answer is Right**
The correct blood pressure in the right ventricle is approximately 25 mmHg. This is because the right ventricle has a lower wall tension and a lower afterload compared to the left ventricle. The right ventricle pumps blood into the pulmonary circulation, which has a much lower resistance compared to the systemic circulation. Additionally, the right ventricle has a thicker wall to accommodate the lower pressure, which allows it to generate sufficient force to pump blood into the pulmonary artery.
**Why Each Wrong Option is Incorrect**
**Option B:** 80 mmHg is too high for the right ventricle, as it is more representative of the blood pressure in the left ventricle or the aorta.
**Option C:** 95 mmHg is also too high for the right ventricle, as it is still higher than the normal blood pressure in the right ventricle.
**Option D:** 120 mmHg is excessively high for the right ventricle, as it is representative of the blood pressure in the aorta or the left ventricle during systole.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the right ventricle is a low-pressure chamber, and its blood pressure is significantly lower compared to the left ventricle. This is a critical concept in understanding the pathophysiology of heart failure and pulmonary hypertension.
**β Correct Answer: A. 25 mmHg**