Global longitudinal strain calculator: LV GLS and serial change

Review left ventricular global longitudinal strain and serial-change inputs, with the tool’s measurement and source context.

Created by Mohammed Kamareddine, MD · Sources & educational scope

Open interactive calculator →

Method

Relative reduction = (|baseline GLS| − |follow-up GLS|) ÷ |baseline GLS| × 100

Use the measurement units shown below. Some fields apply only to a selected method or condition; follow the interactive tool’s method choices. The interactive tool keeps missing measurements incomplete and provides its method-specific results and reference context.

Measurements and acquisition

Current GLS · signed %

Enter the measured value in the displayed unit

Confirm the variable matches the selected formula.
Use the unit displayed beside the field.
Keep measurements from the same representative hemodynamic state.

Baseline GLS · signed %

Enter the measured value in the displayed unit · Optional

Confirm the variable matches the selected formula.
Use the unit displayed beside the field.
Keep measurements from the same representative hemodynamic state.

Sources and method context

ASE / EACVI · 2025 · Clinical Applications of Strain Echocardiography · Global reference ranges and serial comparison pp.994–995

Primary reference

Acquisition and interpretation · Global reference ranges and serial comparison pp.994–995
Method-specific acquisition and reference context. Arithmetic uses entered measurements; clinical interpretation remains subject to image quality and study context.

Catalogue review status: Exact guideline locator mapped · clinical sign-off pending

These pages describe the educational tool. Interpret measurements with the complete clinical context and the method’s acquisition limitations.

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