Discuss ARDMS AE-Adult-Echocardiography Exam Topic 5 Question 18

Which Doppler signal is used to calculate the pulmonary artery end-diastolic pressure gradient?

ATricuspid insufficiency

BTricuspid inflow velocity

CPulmonary insufficiency

DPulmonary inflow velocity

Suggested Answer: C

Pulmonary artery end-diastolic pressure (PAEDP) can be estimated noninvasively by measuring the end-diastolic velocity of pulmonary regurgitation (pulmonary insufficiency) using continuous-wave Doppler. The pressure gradient between the pulmonary artery and right ventricle at end-diastole is calculated using the modified Bernoulli equation from this velocity.

Tricuspid insufficiency is used to estimate right ventricular systolic pressure. Tricuspid inflow and pulmonary inflow velocities provide information on diastolic function but not direct pressure gradients.

This method is well validated and included in ASE guidelines for pulmonary hypertension assessment and Doppler hemodynamics16:Textbook of Clinical Echocardiography, 6ep.300-30512:ASE Doppler Guidelinesp.110-115.

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12 comments · newest first

Gladis 3 days ago

I'm leaning towards B) Tricuspid inflow velocity. It gives good insight too.

Hollis 8 days ago

I agree, A) Tricuspid insufficiency is key for that measurement.

Marleen 13 days ago

I think it's A) Tricuspid insufficiency. It makes sense for pressure gradients.

Lashawna 18 days ago

I thought it was C) Pulmonary insufficiency, but I guess not!

Gilma 23 days ago

B) Tricuspid inflow velocity could also be relevant, right?

Yuki 28 days ago

Wait, is it really just A? Seems too simple.

Thersa 1 month ago

Totally agree, that's the right choice!

Justa 1 month ago

A) Tricuspid insufficiency is the one!

Barabara 1 month ago

I definitely remember that tricuspid insufficiency is often used in these calculations, but I wonder if they could be looking for something else like pulmonary inflow velocity.

Ellen 2 months ago

I’m a bit confused; I feel like pulmonary insufficiency could also be relevant, but I can't recall the specifics.

Annalee 2 months ago

I remember practicing a question about pulmonary artery pressures, and I think tricuspid inflow velocity was mentioned as important.

Veronika 2 months ago

I think it's related to tricuspid insufficiency, but I'm not entirely sure if that's the right choice for end-diastolic pressure.

ARDMS AE-Adult-Echocardiography Exam - Topic 5 Question 18 Discussion