Real-time three dimensional tte in quantification of left ventricular dyssynchrony

Background. The main problem in the patient selection for cardiac resynchronization therapy (CRT) is lack of unified approaches to definition mechanical dyssynchrony (MD) and criteria. Objective. To reveal dependence criteria patients on method point stimulation correlation these data with width QRS complex percentage global two-dimensional longitudinal deformation. Design methods. study involved 12 drug-compensated CHF class II-IV, LVEF< 35 % a duration >130 ms, having CRT indications. All were intraoperatively injected retrograde transaortically guided electrode. During each (88 points), transesophageal Echo-KG (PE Echo-KG) was performed. TomTec Philips Qlab 3DQ Advanced software used analysis. Results. segmental excursion myocardial contractility differed significantly depending point. A moderate inverse found between ExcAvg, LVEF duration. There direct SDI-16 shown, an ExcAvg LVEF. 2D strain inversely correlated EF. Conclusion. technique useful regional LV assessment comparison alternative pacing improve response CRT.