Changes in Global Left Ventricular Function by Multidirectional Strain Assessment in Heart Failure Patients Undergoing Cardiac Resynchronization Therapy

2009 ◽  
Vol 22 (6) ◽  
pp. 688-694 ◽  
Author(s):  
Victoria Delgado ◽  
Claudia Ypenburg ◽  
Qing Zhang ◽  
Sjoerd A. Mollema ◽  
Jeffrey Wing-Hong Fung ◽  
...  
Keyword(s):  
Heart Failure ◽  
Cardiac Resynchronization Therapy ◽  
Left Ventricular Function ◽  
Ventricular Function ◽  
Left Ventricular ◽  
Cardiac Resynchronization ◽  
Resynchronization Therapy ◽  
Heart Failure Patients ◽  
Global Left Ventricular ◽  
Global Left Ventricular Function

scholarly journals Cardiac index in atrio- and interventricular delay optimized cardiac resynchronization therapy and cardiac contractility modulation

2015 ◽  
Vol 1 (1) ◽  
pp. 89-91 ◽  
Author(s):  
J. Tumampos ◽  
N. Wulf ◽  
H. Kühnert ◽  
O. Solbrig ◽  
J. Querengässer ◽  
...  
Keyword(s):  
Heart Failure ◽  
Cardiac Index ◽  
Cardiac Resynchronization Therapy ◽  
Cardiac Contractility ◽  
Left Ventricular ◽  
Cardiac Resynchronization ◽  
Resynchronization Therapy ◽  
Cardiac Contractility Modulation ◽  
Heart Failure Patients ◽  
Qrs Duration

AbstractCardiac resynchronization therapy (CRT) is an established therapy for heart failure patients and improves quality of life in patients with sinus rhythm, reduced left ventricular ejection fraction (LVEF), left bundle branch block and wide QRS duration. Since approximately sixty percent of heart failure patients have a normal QRS duration they do not benefit or respond to the CRT. Cardiac contractility modulation (CCM) releases nonexcitatoy impulses during the absolute refractory period in order to enhance the strength of the left ventricular contraction. The aim of the investigation was to evaluate differences in cardiac index between optimized and nonoptimized CRT and CCM devices versus standard values. Impedance cardiography, a noninvasive method was used to measure cardiac index (CI), a useful parameter which describes the blood volume during one minutes heart pumps related to the body surface. CRT patients indicate an increase of 39.74 percent and CCM patients an improvement of 21.89 percent more cardiac index with an optimized device.

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