What is TAPSE/PAPS coupling?

TAPSE/PAPS ratio reflects RV-pulmonary artery coupling efficiency. A value <0.55 mm/mmHg indicates RV-PA uncoupling, associated with RV failure and poor prognosis.

How is PAPS measured echocardiographically?

PAPS is estimated from peak tricuspid regurgitation velocity using the simplified Bernoulli equation plus estimated right atrial pressure from IVC collapsibility.

When is RV-PA coupling assessment clinically important?

RV-PA coupling assessment is critical in pulmonary arterial hypertension, cor pulmonale, post-cardiac surgery RV failure, and when deciding on transplant listing timing.

TAPSE/PAPS Coupling RV-PA Threshold

Calculate RV-PA coupling using the TAPSE/PAPS ratio. A ratio <0.55 mm/mmHg indicates uncoupling and predicts worse outcomes in pulmonary hypertension and right heart failure.

Use the full interactive calculator below, or

Related Calculators

Diastolic Stress E/e'

Hyper-niche Medical

TAPSE/PAPS Coupling RV-PA Threshold

Related Calculators

Frequently Asked Questions

What is TAPSE/PAPS coupling?

How is PAPS measured echocardiographically?

When is RV-PA coupling assessment clinically important?