Two-dimensional strain profiles in patients with physiological and pathological hypertrophy and preserved left ventricular systolic function: A comparative analyses

Luis Afonso, Ashok Kondur, Mengistu Simegn, Ashutosh Niraj, Pawan Hari, Ramanjit Kaur, Preeti Ramappa, Jyotiranjan Pradhan, Deepti Bhandare, Kim A. Williams, Sandip Zalawadiya, Aurelio Pinheiro, Theodore P. Abraham

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: This study was designed to examine the utility of two-dimensional strain (2DS) or speckle tracking imaging to typify functional adaptations of the left ventricle in variant forms of left ventricular hypertrophy (LVH). Design: Cross-sectional study. Setting: Urban tertiary care academic medical centres. Participants: A total of 129 subjects, 56 with hypertrophic cardiomyopathy (HCM), 34 with hypertensive left ventricular hypertrophy (H-LVH), 27 professional athletes with LVH (AT-LVH) and 12 healthy controls in sinus rhythm with preserved left ventricular systolic function. Methods: Conventional echocardiographic and tissue Doppler examinations were performed in all study subjects. Bi-dimensional acquisitions were analysed to map longitudinal systolic strain (automated function imaging, AFI, GE Healthcare, Waukesha, Wisconsin, USA) from apical views. Results: Subjects with HCM had significantly lower regional and average global peak longitudinal systolic strain (GLS-avg) compared with controls and other forms of LVH. Strain dispersion index, a measure of regional contractile heterogeneity, was higher in HCM compared with the rest of the groups. On receiver operator characteristics analysis, GLS-avg had excellent discriminatory ability to distinguish HCM from H-LVH area under curve (AUC) (0.893, p<0.001) or AT-LVH AUC (0.920, p<<0.001). Tissue Doppler and LV morphological parameters were better suited to differentiate the athlete heart from HCM. Conclusions: 2DS (AFI) allows rapid characterisation of regional and global systolic function and may have the potential to differentiate HCM from variant forms of LVH.

Original languageEnglish (US)
Article numbere001390
JournalBMJ open
Volume2
Issue number4
DOIs
StatePublished - 2012

ASJC Scopus subject areas

  • Medicine(all)

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