Cardiac Codex

E/e' Ratio

A Diagnostic Catheterization & Hemodynamics term on the RCIS exam blueprint, defined for cath lab and EP clinicians.

An echocardiographic Tissue Doppler measurement (ratio of early mitral inflow velocity to early diastolic mitral annular velocity) used to non-invasively estimate LVEDP; a ratio <8 suggests normal filling pressures, while >14 has high specificity for elevated LVEDP.

Domain: Diagnostic Catheterization & Hemodynamics · Blueprint: RCIS exam guide

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