Left ventricular strain and untwist in hypertrophic cardiomyopathy: relation to exercise capacity

Khalid Abozguia, Ganesh Nallur-Shivu, Thanh T Phan, Ibrar Ahmed, Rajat Kalra, Rebekah A Weaver, William J McKenna, John E Sanderson, Perry Elliott, Michael P Frenneaux

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Nonobstructive hypertrophic cardiomyopathy (nHCM) is often associated with reduced exercise capacity despite hyperdynamic systolic function as measured by left ventricular ejection fraction. We sought to examine the importance of left ventricular strain, twist, and untwist as predictors of exercise capacity in nHCM patients.
Original languageEnglish
Pages (from-to)825-832
Number of pages8
JournalAmerican Heart Journal
Issue number5
Publication statusPublished - May 2010


  • Aged
  • Cardiomyopathy, Hypertrophic
  • Echocardiography, Doppler
  • Electrocardiography
  • Exercise Tolerance
  • Female
  • Heart Rate
  • Humans
  • Male
  • Middle Aged
  • Oxygen Consumption
  • Rotation
  • Torsion Abnormality

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