What Pd/Pa value is equivalent to FFR <=0.80?

A resting Pd/Pa <=0.91 corresponds to approximately FFR <=0.80 with high diagnostic accuracy, supporting revascularization without adenosine in many cases.

What is the advantage of resting Pd/Pa?

Resting Pd/Pa requires no adenosine, reducing procedure time, cost, and patient discomfort while maintaining accuracy comparable to iFR in DEFINE-FLAIR and iFR-SWEDEHEART trials.

When should hyperemic FFR be preferred?

FFR is preferred when resting index falls in the grey zone (0.86-0.93), in complex three-vessel disease requiring complete revascularization planning, or when resting hyperemia is suspected.

Pd/Pa Resting Index vs FFR Comparison

Compare resting Pd/Pa (distal coronary to aortic pressure ratio) against hyperemic FFR to assess lesion significance without adenosine administration.

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Pd/Pa Resting Index vs FFR Comparison

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Frequently Asked Questions

What Pd/Pa value is equivalent to FFR <=0.80?

What is the advantage of resting Pd/Pa?

When should hyperemic FFR be preferred?