Evaluating for Right Heart Strain
In a patient with a known history of pulmonary hypertension and chief complaint of chest pain, what is one ultrasonographic method (i.e. specific windows) that can be utilized to assess the patient? Â What is a specific finding that you might be looking for to support the diagnosis of pulmonary hypertension? Â
In the clip provided (probe marker should be on screen left), what is the predominant finding related to pulmonary hypertension?
Diagnosis: Pulmonary Hypertension. Â One ultrasonographic method that can be utilized is the parasternal long axis (PLAX) window, as demonstrated in this clip. Â The parasternal short axis (PSAX), apical 4-chamber (A4CH) and subcostal windows are also useful. Â In this clip, the PLAX demonstrates an enlarged right ventricle at the top of the screen (closest to the probe) with the left ventricularÂ
outflow tract/aorta and left atrium also in view. Â A normal PLAX should have a right ventricle : aorta : left atrium ratio of approximately 1:1:1. Â In this clip, we can see that the right ventricle is much larger and skews the ratio. The labeled image also demonstrates this abnormality. Thus, the enlarged right ventricle seen here is the predominant finding related to pulmonary hypertension causing right heart strain.