S-Wave Tissue Doppler Longitudinal Dysfunction

Assess LV longitudinal systolic dysfunction using mitral annular S-wave velocity by tissue Doppler imaging. Lateral S' <8 cm/s or septal S' <7 cm/s indicates systolic dysfunction.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Assess LV longitudinal systolic dysfunction using mitral annular S-wave velocity by tissue Doppler imaging. Lateral S' <8 cm/s or septal S' <7 cm/s indicates systolic dysfunction

Each component has a specific meaning:

  • Mitral annular S-wave velocity by tissue Doppler imaging — The mitral annular s-wave velocity by tissue doppler imaging recorded for the scenario being assessed.

Note: Interpret the s-wave tdi dysfunction result against the thresholds and context described above.

How to Use

Enter the mitral annular S-wave velocity by tissue Doppler imaging for the scenario you are assessing. Assess LV longitudinal systolic dysfunction using mitral annular S-wave velocity by tissue Doppler imaging. Lateral S' <8 cm/s or septal S' <7 cm/s indicates systolic dysfunction. Use the s-wave tdi dysfunction result to inform your calculation.

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Frequently Asked Questions