Pressure Gradient

Proximal velocity

m/s

Distal velocity

m/s

Gradient

mmHg

Formula

PG = P₂ - P₁ = 4*(V₂² - V₁²)

Info

References:
Requarth JA. Am J Cardiol. 1984 May 1;53(9):1369-73. -> PubMed

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