1. What is LV Mass Index (LVMI)?

Definition: LVMI is a normalized measurement of left ventricular mass adjusted for body surface area, used to assess cardiac hypertrophy.

Purpose: It helps cardiologists evaluate left ventricular hypertrophy (LVH) which is associated with cardiovascular risks.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( LVMI \) — Left ventricular mass index (g/m²)
• \( LVM \) — Left ventricular mass (grams)
• \( BSA \) — Body surface area (m²)

Explanation: Dividing LVM by BSA accounts for differences in body size, allowing for standardized comparisons.

3. Clinical Significance of LVMI

Details: Normal values differ by gender. For men:

• Normal: 43-95 g/m²
• Mild LVH: 96-108 g/m²
• Moderate LVH: 109-121 g/m²
• Severe LVH: ≥122 g/m²

4. Using the Calculator

Tips: Enter LVM from echocardiography and BSA (calculated from height/weight). Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How is LVM measured?
A: Typically via echocardiography using the Devereux formula or cardiac MRI.

Q2: Why adjust for BSA?
A: Larger individuals naturally have larger hearts. BSA adjustment enables fair comparisons.

Q3: What's the difference between male and female values?
A: Women generally have lower LVMI ranges due to smaller body size and heart dimensions.

Q4: What conditions increase LVMI?
A: Hypertension, aortic stenosis, athletic training, and hypertrophic cardiomyopathy.

Q5: How often should LVMI be monitored?
A: Depends on clinical context - annually for hypertension, more frequently for certain cardiac conditions.