LV Calculator | Left Ventricle Mass Index

Written by Great Medico

Updated September 24, 2026 •2 min read

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Heart and vascular calculations often combine several measurements that are easy to misread in isolation. LV Calculator | Left Ventricle Mass Index keeps those inputs together and shows the result the implemented model is designed to produce.

What this calculator does

LV Calculator | Left Ventricle Mass Index uses Sex, Do you know body surface area?, Body surface area, Height, Weight, LV end-diastolic diameter, Interventricular septum thickness, and Posterior wall thickness to calculate left-ventricular mass index. It is built around the exact fields displayed in this plugin rather than a generic version of the topic. Where supported, it also shows LV mass, BSA, and Relative wall thickness so the primary result is easier to place in context. Cardiovascular formulas are sensitive to measurement technique and clinical context. A mathematically correct output can still be misleading if the input was obtained under a different physiologic condition, with a different assay, or outside the population for which the score was developed.

How to use it

Complete the requested fields, including Sex, Do you know body surface area?, Body surface area, Height, Weight, and LV end-diastolic diameter, then finish the remaining items shown in the calculator. Confirm that each yes/no, category, date, or score option is applied exactly as labeled. When the formula combines measurements, use values obtained under the same assessment or physiologic conditions whenever possible.

How the calculation works

Left-ventricular mass is estimated with the corrected ASE cube formula: 0.8 × 1.04 × [(septal thickness + LV end-diastolic diameter + posterior-wall thickness)³ − LV end-diastolic diameter³] + 0.6. LV mass index is that mass divided by entered BSA or Mosteller BSA from height and weight. Relative wall thickness is also reported as 2 × posterior-wall thickness / LV end-diastolic diameter.

Example

Using the sample values prefilled in this calculator, the primary result is 95.31 g/m² (LV mass index), LV mass is 182 g, and BSA is 1.91 m². This worked example shows how the plugin’s own default inputs flow through the implemented method; replace them with the correct patient, laboratory, imaging, or personal values before interpreting a result.

How to interpret the result

Read the output as lv mass index generated by this specific formula or score. The number is most useful when compared with the clinical context and, when appropriate, serial measurements or the current guideline pathway for the condition. A boundary value should not be overinterpreted as a sudden change in physiology.

Limitations and notes

Cardiovascular formulas are sensitive to measurement technique and clinical context. A mathematically correct output can still be misleading if the input was obtained under a different physiologic condition, with a different assay, or outside the population for which the score was developed.