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Figure 6 | Cardiovascular Ultrasound

Figure 6

From: Right ventricular dyssynchrony in patients with pulmonary hypertension is associated with disease severity and functional class

Figure 6

A representative tissue Doppler image is shown demonstrating (A) Almost synchronized time-to-peak longitudinal peak strain of both right ventricular free wall (yellow curve) and ventricular septum (green curve) in an individual without PAH. (B) Slightly delayed time-to-peak longitudinal right ventricular free wall peak strain (yellow curve) when compared to ventricular septum peak strain (green curve) in a patient with mild PAH. Note that there is no significant reduction in RVw strain generation. (C) A more noticeable delayed time-to-peak longitudinal right ventricular free wall peak strain (yellow curve) when compared to ventricular septum peak strain (green curve) is now evident in a patient with moderate PAH as well as in (D) in a patient with severe PAH and severe RV dysfunction. Note that in both (C) and (D) there is a significant reduction in RVw strain generation.

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