Key result
In patients with right ventricle systolic dysfunction, inspiration significantly decreased tricuspid regurgitation velocity (3.27 vs 2.59 m/s) and SPAP (53.72 vs 38.45 mmHg; P<0.001) vs expiration.
Why the study?
Does quiet respiration affect the peak velocity of tricuspid regurgitation and estimation of systolic pulmonary artery pressure in patients with right ventricle systolic dysfunction?
Observational (n=60)
Does quiet respiration affect the peak velocity of tricuspid regurgitation and estimation of systolic pulmonary artery pressure in patients with right ventricle systolic dysfunction?
p-value: p=<0.001
In patients with RV systolic dysfunction, quiet respiration significantly affects TR velocity and SPAP estimation, indicating that measurements should be performed at the end of expiration.
No takes yet. Share an insight, caveat, or question.
Respiration may alter TR velocity and SPAP estimates in RV dysfunction; leaves open whether standardized phase improves accuracy.
Zhang et al. (2013) conducted an observational in Right ventricle systolic dysfunction (n=60). Inspiration vs. Expiration was evaluated on Peak velocity of tricuspid regurgitation and systolic pulmonary artery pressure (p=<0.001). In patients with right ventricle systolic dysfunction, inspiration significantly decreased tricuspid regurgitation velocity (3.27 vs 2.59 m/s) and SPAP (53.72 vs 38.45 mmHg; P<0.001) vs expiration.
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