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European Journal of Echocardiography Advance Access originally published online on June 30, 2007
European Journal of Echocardiography 2008 9(3):344-350; doi:10.1016/j.euje.2007.05.001
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Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2007. For permissions please email: journals.permissions@oxfordjournals.org

Myocardial contraction properties along the long and short axes of the left ventricle in isolated left ventricular non-compaction: pulsed tissue Doppler echocardiography

Omac Tufekcioglu*, Dursun Aras, Ali Yildiz, Serkan Topaloglu and Orhan Maden

Yuksek Ihtisas Hospital, Department of Cardiology, Ankara, Turkey

Received 9 January 2007; accepted after revision 4 May 2007; online publish-ahead-of-print 30 June 2007.

* Corresponding author. Tel: +90 312 306 1170; fax: +90 312 467 1925. E-mail address: otufekcioglu{at}ttnet.net.tr (O. Tufekcioglu).


  Abstract

Aim: Our objective was to evaluate regional systolic myocardial contraction properties along the long and short axes of the left ventricle (LV) in patients with isolated LV non-compaction (IVNC).

Methods and results: Pulsed tissue Doppler imaging (TDI) was used to record myocardial velocities along these axes in 25 patients with IVNC (10 asymptomatic–LV ejection fraction [LVEF] ≥ 50%; 15 symptomatic–LVEF < 50%) and 15 healthy controls. In all cases, the systolic velocity pattern featured 2 distinct peaks (SW1, SW2). These peak velocities and the intervals from the electrocardiographic Q wave to each peak (Q-SW1, Q-SW2) were recorded for each axis, and group means were calculated. The asymptomatic group displayed significantly higher long axis SW2 and significantly longer long axis Q-SW1 than the controls. The symptomatic group had significantly lower SW1 and SW2 on both axes and significantly longer short axis Q-SW1 than the asymptomatic group and the controls. Long axis Q-SW1 and short axis Q-SW1 in the symptomatic group were significantly longer than the corresponding control findings, but were not significantly different from the corresponding asymptomatic group findings.

Conclusion: In conclusion, patients with IVNC exhibit distinct systolic myocardial shortening velocities along the long and short axes of the LV. Further, these pulsed TDI findings suggest that asymptomatic patients (those with normal LVEF) have subclinical myocardial dysfunction.

Keywords: Tissue Doppler imaging; Left ventricular non-compaction


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