Right Heart Catheter Values

Background

1. Precapillary PH = mPAP > 25mmHg and PCWP < 15mmHg
2. Post capillary PH = mPAP > 25mmHg and PCWP > 15mmHg. This is also termed “PH due to left heart disease e.g. mitral pathology or chronically low LVEF%)

Transpulmonary Gradient (TPG)

PA - Pulsatility Index “PAPi”

Composite measure of RV function

1. Mean RAP
2. PA-pulse pressure
3. Cardiac index

Equation PAPi =

LOW values confer worse outcome in

1. Group 1 PAH - 5 year outcomes shown in graph below of Q1 vs Q2-4
2. Post-inferior RCA infarct
3. With LVAD / Impella

References:

A systematic review and physiology of pulmonary artery pulsatility index in left ventricular assist device therapy

Durable left ventricular assist devices (LVAD) have become an established therapy in patients with end-stage heart failure.

academic.oup.com

https://onlinejcf.com/article/S1071-9164(16)30147-6/fulltext#:~:text=Results: The median age of,risk stratification in these patients.

RV Stroke Work Index (RVSWI)

Equation:

RVSWI = [mPAP-mRAP] x SVI x 0.0136

Note: SVI = Cardiac index x1000 / Heart rate

References

Values < 19.7 = worse outcomes >19.7 better outcomes in CTEPH patients