TY - JOUR
T1 - Combining neurohormonal blockade with continuous-flow left ventricular assist device support for myocardial recovery
T2 - A single-arm prospective study
AU - Patel, Snehal R.
AU - Saeed, Omar
AU - Murthy, Sandhya
AU - Bhatia, Vivek
AU - Shin, Jooyoung J.
AU - Wang, Dan
AU - Negassa, Abdissa
AU - Pullman, James
AU - Goldstein, Daniel J.
AU - Maybaum, Simon
N1 - Funding Information:
S.M. serves as a consultant for Thoratec, Inc., and also receives research grant support from Thoratec. D.J.G. serves as a consultant for Thoratec.
PY - 2013/3
Y1 - 2013/3
N2 - Background: Combining mechanical unloading by a continuous-flow left ventricular assist device (CF-LVAD) and neurohormonal blockade with heart failure medications (HFMED) is an underexplored clinical strategy to promote recovery of cardiac function in patients with advanced heart failure (HF). Methods: We implemented a clinical protocol to achieve maximal neurohormonal blockade after placement of a CF-LVAD and assessed its utility in an LVAD weaning (6,200 rpm) study. Thirty-four subjects were enrolled after CF-LVAD and were managed with aggressive, bi-weekly up-titration of HFMED. Results: Twenty-one subjects (8 with coronary artery disease, 13 with idiopathic dilated cardiomyopathy) were included in this LVAD weaning investigation. Overall, combined CF-LVAD and HFMED resulted in significant reverse remodeling with a decrease in left atrial volume index (44.7±16.0 to 31.6±12.1 ml/m2, p < 0.001) and LV internal diastolic diameter (6.7±1.5 to 6.0±1.6 cm, p = 0.003) and an increase in LV ejection fraction (17.4±6.5 to 33.1±16.2%, p < 0.001) during LVAD weaning (6,200 rpm). Five of 21 (24%) subjects demonstrated recovery of biventricular function. Exploratory analysis showed that recovered subjects had shorter duration HF, less myocardial fibrosis and less myocyte hypertrophy, and were supported at higher LVAD speeds. Conclusions: CF-LVAD support in combination with HFMED leads to significant reverse remodeling in patients with advanced HF. Using this approach, one quarter of patients demonstrated complete recovery of cardiac function. Our results suggest that bridge to recovery in the current device era is a clinically meaningful phenomenon and merits further investigation.
AB - Background: Combining mechanical unloading by a continuous-flow left ventricular assist device (CF-LVAD) and neurohormonal blockade with heart failure medications (HFMED) is an underexplored clinical strategy to promote recovery of cardiac function in patients with advanced heart failure (HF). Methods: We implemented a clinical protocol to achieve maximal neurohormonal blockade after placement of a CF-LVAD and assessed its utility in an LVAD weaning (6,200 rpm) study. Thirty-four subjects were enrolled after CF-LVAD and were managed with aggressive, bi-weekly up-titration of HFMED. Results: Twenty-one subjects (8 with coronary artery disease, 13 with idiopathic dilated cardiomyopathy) were included in this LVAD weaning investigation. Overall, combined CF-LVAD and HFMED resulted in significant reverse remodeling with a decrease in left atrial volume index (44.7±16.0 to 31.6±12.1 ml/m2, p < 0.001) and LV internal diastolic diameter (6.7±1.5 to 6.0±1.6 cm, p = 0.003) and an increase in LV ejection fraction (17.4±6.5 to 33.1±16.2%, p < 0.001) during LVAD weaning (6,200 rpm). Five of 21 (24%) subjects demonstrated recovery of biventricular function. Exploratory analysis showed that recovered subjects had shorter duration HF, less myocardial fibrosis and less myocyte hypertrophy, and were supported at higher LVAD speeds. Conclusions: CF-LVAD support in combination with HFMED leads to significant reverse remodeling in patients with advanced HF. Using this approach, one quarter of patients demonstrated complete recovery of cardiac function. Our results suggest that bridge to recovery in the current device era is a clinically meaningful phenomenon and merits further investigation.
KW - left ventricular assist device;recovery;
KW - pharmacology;heart failure;
KW - weaning study;neurohormonal blockade
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U2 - 10.1016/j.healun.2012.11.019
DO - 10.1016/j.healun.2012.11.019
M3 - Article
C2 - 23415314
AN - SCOPUS:84873913429
SN - 1053-2498
VL - 32
SP - 305
EP - 312
JO - Journal of Heart and Lung Transplantation
JF - Journal of Heart and Lung Transplantation
IS - 3
ER -