Pulmonary artery systolic pressure (PASP)
Pulmonary artery systolic pressure from the TR peak velocity (4v²) plus right atrial pressure estimated from the IVC.
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PASP ≈ 64 mmHg
TR gradient 49 + RAP 15 mmHg
Worked steps
TR peak gradient (simplified Bernoulli)
ΔP = 4v² = 4 × 3.5² = 49 mmHg
Add right atrial pressure (from IVC size & collapse)
PASP = ΔP + RAP = 49 + 15 = 64 mmHg
Reference: ASE/EACVI chamber quantification (2015). In the absence of RVOT/pulmonary stenosis, PASP equals RV systolic pressure.
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