Optimization of cardiac resynchronization therapy according to the surface ECG

ECG Patterns In Cardiac Resynchronization Therapy.

Cardiac resynchronization therapy is an established treatment modality in heart failure. Though non-response is a serious issue. To address this issue, a good understanding of the electrical activation during underlying intrinsic ventricular activation, biventricular as well as right- and left ventricular pacing is needed. By interpreting the 12-lead electrocardiogram, possible reasons for subo...

Measurement precision in the optimization of cardiac resynchronization therapy.

BACKGROUND Cardiac resynchronization therapy improves morbidity and mortality in appropriately selected patients. Whether atrioventricular (AV) and interventricular (VV) pacing interval optimization confers further clinical improvement remains unclear. A variety of techniques are used to estimate optimum AV/VV intervals; however, the precision of their estimates and the ramifications of an impr...

Superresponse to cardiac resynchronization therapy.

C ase presentation: A 55-year-old female patient underwent implan-tation of a cardiac resynchronization therapy (CRT) defibrillator 6 years ago owing to nonischemic dilated cardio-myopathy. Her left-ventricular (LV) ejection fraction (EF) was 28% before implantation, her LV end-diastolic volume index (EDVI) was 144 mL/m 2 , and her LV end-systolic volume index (ESVI) was 104 mL/m 2. Her intrins...

Different response rates to cardiac resynchronization therapy (CRT) according to the applied definition.

BACKGROUND Solid evidence shows that cardiac resynchronization therapy (CRT) improves prognosis, physical capacity and quality of life in selected groups of patients with chronic heart failure (CHF). Nonetheless, marked percentage of patients seem not to benefit from CRT. MATERIAL AND METHODS Sixty consecutive patients (aged 66.3 +/- 8.7 years, 57 men - 95%, 3 women - 5%) with CHF (71.7% with...

Cardiac Simulation to Personalize Cardiac Resynchronization Therapy.