LV Fractional Shortening

Name: LV Fractional Shortening
Creator: Daniel Diaz-Gil, MD
Keywords: cardiology, fractional shortening, FS, LV function, LVEDD, LVESD, left ventricle, systolic function, echocardiography, M-mode

Calculates left ventricular fractional shortening from M-mode echocardiography measurements

Clinically Verified· 5 tests

For educational and informational purposes only. Verify all results before clinical application.

LVEDD *

LVESD *

Patient Age Group

Optional: neonates have different FS normal ranges

References

Lang RM, et al. Recommendations for cardiac chamber quantification by echocardiography. J Am Soc Echocardiogr. 2005;18(12):1440-1463.[DOI]
Colan SD, et al. Developmental modulation of myocardial mechanics: age- and growth-related alterations in afterload and contractility. J Am Coll Cardiol. 1992;19(3):619-629.[DOI]
Teichholz LE, et al. Problems in echocardiographic volume determinations: echocardiographic-angiographic correlations in the presence or absence of asynergy. Am J Cardiol. 1976;37(1):7-11.[DOI]

Reviewed by Daniel Diaz-Gil, MD · Last updated March 2026

Medical disclaimer

This tool is for educational and informational purposes only. It is not a substitute for professional clinical judgment. Always independently verify results before making clinical decisions.

Professional Resources — Tools used by pediatricians for LV fractional shortening

Park's Pediatric Cardiology for Practitioners, 7th EdComprehensive reference for pediatric cardiology evaluation and management~$95via Amazon Echocardiography in Pediatric and Congenital Heart Disease, Lai et alDefinitive echo reference with z-score tables and imaging protocols~$180via Amazon BoardVitals Pediatric Cardiology QbankBoard-style questions for pediatric cardiology certificationsubscriptionvia BoardVitals