How Is Pulmonary Hypertension Diagnosed?


How is pulmonary hypertension diagnosed? What standard is it based on?


Pulmonary hypertension refers to the high blood pressure in the arteries that transport blood to the lungs. The diagnosis of the disease depends on the detection of abnormal heart sounds in the cardio-pulmonary circulation.

The first heart sound (S1) is generated when the mitral (M1) and tricuspid (T1) valve close. The second heart sound (S2) is generated when the aortic (A2) and pulmonic (P2) valves close. Normally, both S1 and S2 are heard as one single sound. However, when the blood pressure in the arteries is high, the closure of pulmonic valve is delayed by the increased blood flow. In this case, a “split” S2 is heard which can differentiate the sound of A2 and P2. In patients with pulmonary hypertension, the second heart sound is frequently heard and accentuated.


Keywords: pulmonary hypertension heart sounds


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* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.