PAPi is ratio of pulmonary artery pulse pressure to right atrial pressure

• related: cardiac hemodynamics and pressures
• tags: #permanent

---

pulmonary artery pulse pressure/CVP: marker of how well RV is function. Wider pulse pressure/stroke volume = bigger contractility. Lower CVP = better emptying RV. Less than 0.9 = sick

PAPi is ratio of pulmonary artery pulse pressure (pulmonary artery systolic - pulmonary artery diastolic) to right atrial pressure.¹

Right atrial pressure is measure of congestion. PA pulse pressure is measurement of RV stroke volume and afterload.

$$PAPi = \frac{PASP-PADP}{RAP}$$

Low PAPi is predictor of mortality in right sided heart failure.

Links to this note

• cardiac hemodynamics and pressures

  • PAPi is ratio of pulmonary artery pulse pressure to right atrial pressure

• cardiogenic shock

  • PAPi is ratio of pulmonary artery pulse pressure to right atrial pressure. PAPI correlates with RV dysfunction

• Low PAPi is predictor of mortality in right sided heart failure

  • PAPi is ratio of pulmonary artery pulse pressure to right atrial pressure

Footnotes

1. https://www.ahajournals.org/doi/10.1161/CIRCHEARTFAILURE.121.009085 ↩