Figure 22.2 Parasternal short-axis view shows the flat septum. LV, left ventricle; RV, right ventricle.

Moderate TR with an RV estimated pressure of 34 mmHg was seen (Videoclip 22.3). Dilated IVC, with respiratory size variation greater than 50%, consistent with elevated RA pressure was noted. Trivial pericardial effusion was present.

Discussion

The RV has the same cardiac output as the LV. It has one-sixth as much muscle mass and performs one-fourth the stroke work, because the pulmonary vascular resistance is one-tenth of the systemic resistance [1].

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