Echo Calculator

Enter your echo measurements here to calculate normalised values and see reference ranges.

Enter measurements in mm and weight in kg.

Body Weight (kg)

LV Measurements:

LVIDd (mm)

LVIDs (mm)

LVPWd (mm)

LVEDV modified Simpsons (ml)

LVESV modified Simpsons (ml)

LA short-axis (mm)

Ao Diameter (mm)

LA Long Axis (LAD) (mm)

LVIDDN (Cornell) (Enlarged) (Borderline Enlarged) (Normal) (Underfilled) (ref 1.27 - 1.7)

LVIDSN (Cornell) (Enlarged) (Normal) (Underfilled) (ref 0.71 - 1.26)

Fractional Shortening % (Normal) (Abnormal) (ref >25)

Relative Wall Thickness (Thick Walls) (Normal Walls) (Thin Walls) (ref 0.32-0.42)

Ejection Fraction % (Normal) (Abnormal) (ref >50)

LVEDV / BW (Enlarged) (Normal) (Underfilled) (ref 1.25 - 3.00)

LVESV / BW (Enlarged) (Normal) (Underfilled) (ref 0.3 - 1.35)

LA:Ao Ratio (Enlarged) (Normal) (ref <1.65)

LA (short axis) Normalised (Enlarged) (Normal) (ref <1.17)

LADN (Enlarged) (Normal) (ref <1.6)

LAD : Ao(short axis) (Enlarged) (Normal) (ref <2.1)

(Applicable to Degenerative Mitral Valve Disease cases only)

Left Atrial Enlargement (LA:Ao > 1.65) - Very Enlarged Slightly Enlarged - Check LAD Normal Awaiting measurements...

LV Enlargement (LVIDDN > 1.7) - Very Enlarged Slightly Enlarged - Check Breed Normal Normal Awaiting measurements...

EPIC - Meets Echo Criteria for Stage B2 Does Not Meet Criteria Awaiting measurements...

This patient meets the EPIC Trial echo criteria for Stage B2. In the presence of a grade ≥3/6 murmur, pimobendan may be indicated.

This guide and calculator is designed for assistance in interpretation of echo results, but can't replace expert clinical judgement.