Left Ventricular Mass Index Calculator

The Left Ventricular Mass Index Calculator estimates cardiac size by dividing Left Ventricular Mass by Body Surface Area. This tool helps cardiologists and patients detect left ventricular hypertrophy early. Whether you are managing hypertension, evaluating cardiovascular risk, or monitoring heart health, this tool provides quick and reliable results.

Enter the left ventricular mass in grams (g)
Enter the body surface area in square meters (m²)

How Left Ventricular Mass Index Is Calculated

The Left Ventricular Mass Index (LVMI) calculates the mass of the heart's main pumping chamber relative to body size. This standard metric is crucial for detecting left ventricular hypertrophy, a thickening of the heart muscle that often results from high blood pressure.

LVMI = LVM / BSA

Where:

  • LVM = Left Ventricular Mass (grams)
  • BSA = Body Surface Area (square meters)
  1. Obtain the Left Ventricular Mass (LVM) in grams, typically from an echocardiogram report.
  2. Determine the Body Surface Area (BSA) in square meters using height and weight.
  3. Divide the LVM by the BSA to get the final index.

This normalization ensures that heart size is judged accurately regardless of the patient's physical stature, providing a reliable assessment for clinical use.

What Your Left Ventricular Mass Index Means

Your LVMI score indicates whether your heart muscle has thickened in response to pressure. This number helps doctors see if conditions like hypertension or valve disease are causing your heart to work too hard.

Normal Range (< 115 g/m²)

Your heart size is appropriate for your body structure. This suggests your heart is pumping effectively without excessive strain. Maintaining a healthy diet and regular exercise can help keep your heart in this optimal range.

Mild Hypertrophy (115–131 g/m²)

Your heart shows early signs of thickening. You should consult your doctor to review blood pressure control and discuss lifestyle changes that can reduce cardiac strain. Adjustments to diet or medication might be needed to prevent further progression.

Severe Hypertrophy (> 131 g/m²)

Your heart is under significant stress and may have difficulty pumping efficiently. This often requires a comprehensive medical review to adjust medications or lifestyle habits to protect heart function and prevent complications.

Important Note

Keep in mind that reference values differ between men and women; for example, a score of 100 g/m² is normal for men but borderline for women.

This calculator is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider.

Use this index to track the effectiveness of your treatment plan by comparing new results with previous echocardiogram reports.