Pulmonary hypertension is associated with an increased intensity of the second heart sound, which coincides with the end of the T wave on ECG. It is the pulmonic component of the second heart sound that is increased.
Pulmonary stenosis can cause dyspnea on exertion but auscultation will reveal a systolic murmur and decreased second heart sound (pulmonic component).
As well, there may be prominent waves in the jugular venous pulse, a right ventricular heave, an ejection click, and a right ventricular fourth heart sound. When signs and symptoms are apparent, pulmonary hypertension is usually moderate to severe.