Echocardiography in the Identification of Responders:The Novel Role of Tissue Doppler Imaging and Strain Imaging
Biventricular pacing (BivP) has been proposed as an adjunctive nonpharmacological therapy for patients with chronic heart failure (HF) who have electromechanical delay. It is already known that BivP improves symptoms, exercise capacity, quality of life and systolic function in these patients. The French pilot study, the Insync PATH-CHF I study, and the recent MUSTIC and MIRACLE trials have shown the improvement of outcome in HF patients calculated in different ways: myocardial oxygen consumption, distance covered during a 6-min walking test, estimation of NYHA functional class, and assessment of quality of life . Recently, it has been demonstrated that BivP is effective in regressing left ventricular (LV) remodeling.
KeywordsRight Ventricular Cardiac Resynchronization Therapy Tissue Doppler Imaging Left Bundle Branch Block Biventricular Pace
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