OPTIMIZATION ATRIOVENTRICULAR DELAY USING ECHOGRAPHY FOR CARDIAC RESYNCHRONIZATION THERAPY PATIENTS

2017 ◽  
pp. 113-118
Author(s):  
Tri Thuc Nguyen ◽  
Cuu Long Nguyen
Keyword(s):  
Cardiac Resynchronization Therapy ◽  
Optimization Methods ◽  
Left Ventricular ◽  
Cardiac Resynchronization ◽  
Resynchronization Therapy ◽  
Velocity Time Integral ◽  
Mitral Inflow ◽  
Atrioventricular Delay ◽  
Time Integral ◽  
Invasive Hemodynamics

Objective: To determine correlation of echo-doppler optimization of atrioventricular delay in cardiac resynchronization therapy with left ventricular invasive hemodynamics optimization. Methods: Intervention prospective study. Result: In 25 patients (48% female, mean age 6.1±10.6, had diagnosis heart failure NYHA IIIV with LVEF= 26.9±5.7%, sinus rhythm, QRS wide is 170±22.1 ms) who underwent CRT. AVsense optimization were determined by invasive LV dP/dtmax, and the Doppler echocardiographic methods evaluated were the velocity–time integral (VTI) of the transmitralflow (EA VTI), the VTI of the LV outflow tractor aorta (LV VTI). The result are 117.8±15.2ms; 117.2±14.5ms and 120.8 ± 12.8ms, prospectively. The optimal AVsense delay with the EA VTI method was most concordant with LV dP/dtmax(r=0,953), LV VTI was less concordant (r=0.568). The result of AVpace optimization by three methods are 159.6±17.9ms; 159±16.2ms và 165±13.8ms, prospectively. The optimal AVpace delay with the EA VTI method was most concordant with LV dP/dtmax (r=0.964), LV VTI was less concordant (r=0.734). Conclusions: Comparing with invasive LV dP/dtmax, measurement of the maximal VTI of mitral inflow is more concordant than LV VTI in AVsense and AVpace optimization. If we optimize AVsense and AVpace, for replacing invasive LV dP/dtmax, EA VTI method was better option. Key words: Dyssychronization, CRT, optimization, dP/dtmax

scholarly journals Left cardiac atrioventricular delay and inter-ventricular delay in cardiac resynchronization therapy responder and non-responder

2016 ◽  
Vol 2 (1) ◽  
pp. 247-250 ◽  
Author(s):  
Matthias Heinke ◽  
Helmut Kühnert ◽  
Tobias Heinke ◽  
Jonas Tumampos ◽  
Gudrun Dannberg
Keyword(s):  
New York ◽  
Cardiac Resynchronization Therapy ◽  
Biventricular Pacing ◽  
Heart Association ◽  
Left Ventricular ◽  
Cardiac Resynchronization ◽  
Resynchronization Therapy ◽  
Atrioventricular Delay ◽  
Surface Ecg ◽  
New York Heart Association

AbstractCardiac resynchronization therapy is an established therapy for heart failure patients. The aim of the study was to evaluate electrical left cardiac atrioventricular delay and interventricular desynchronization in sinus rhythm cardiac resynchronization therapy responder and non-responder. Cardiac electrical desynchronization were measured by surface ECG and focused transesophageal bipolar left atrial and left ventricular ECG before implantation of cardiac resynchronization therapy defibrillators. Preoperative electrical cardiac desynchronization was 195.7 ± 46.7 ms left cardiac atrioventricular delay and 74.8 ± 24.5 ms interventricular delay in cardiac resynchronization therapy responder. Cardiac resynchronization therapy responder New York Heart Association class improved during long term biventricular pacing. Transesophageal left cardiac atrioventricular delay and interventricular delay may be additional useful parameters to improve patient selection for cardiac resynchronization therapy.

Prospective comparison of echocardiographic atrioventricular delay optimization methods for cardiac resynchronization therapy

Heart Rhythm ◽  
2006 ◽  
Vol 3 (2) ◽  
pp. 148-154 ◽  
Author(s):  
Jeffrey E. Kerlan ◽  
Navinder S. Sawhney ◽  
Alan D. Waggoner ◽  
Mohit K. Chawla ◽  
Sanjeev Garhwal ◽  
...  
Keyword(s):  
Cardiac Resynchronization Therapy ◽  
Optimization Methods ◽  
Cardiac Resynchronization ◽  
Resynchronization Therapy ◽  
Delay Optimization ◽  
Atrioventricular Delay ◽  
Prospective Comparison
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