Myocardial contractile inefficiency and dyssynchrony in heart failure with preserved ejection fraction and narrow QRS complex

Thanh T Phan, Khalid Abozguia, Ganesh Nallur Shivu, Ibrar Ahmed, Kiran Patel, Francisco Leyva, Michael Frenneaux

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Using speckle-tracking imaging (STI), the aims of this study were to assess dyssynchrony and quantify the myocardial energy wasted by contractility in delayed segments by determining the longitudinal strain delay index (LSDi) in patients with heart failure with preserved ejection fraction (HFpEF).
Original languageEnglish
Pages (from-to)201-6
Number of pages6
JournalJournal of the American Society of Echocardiography
Issue number2
Publication statusPublished - Feb 2010


  • Aged
  • Blood Pressure
  • Echocardiography, Doppler
  • Elastic Modulus
  • Elasticity Imaging Techniques
  • Electrocardiography
  • Female
  • Heart Failure
  • Humans
  • Male
  • Myocardial Contraction
  • Stroke Volume
  • Ventricular Dysfunction, Left

Cite this