INTERVENTRICULAR DYSSYNCHRONY DURING CONTINUOUS-FLOW LEFT VENTRICULAR ASSIST DEVICE SUPPORT

We focused on the interventricular dyssynchrony caused by the shortened systole of left ventricle (LV) compared to right ventricle (RV) during left ventricular assist device (LVAD) support. The purpose of this study was to assess and quantify the mechanical interventricular dyssynchorny according to...

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Bibliographic Details
Published in:International journal of artificial organs 2019-08, Vol.42 (8)
Main Authors: Shimamura, J, Mizuno, T, Tsukiya, T, Takewa, Y, Inatomi, A, Nishimura, T, Ono, M, Tatsumi, E
Format: Article
Language:English
Subjects:
Anesthesia
Bypasses
Catheters
Conductance
Congestive heart failure
Goats
Heart
Heart rate
Medical instruments
Pulmonary arteries
Pulmonary artery
Resistance
Stroke volume
Systole
Ventricle
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Summary:We focused on the interventricular dyssynchrony caused by the shortened systole of left ventricle (LV) compared to right ventricle (RV) during left ventricular assist device (LVAD) support. The purpose of this study was to assess and quantify the mechanical interventricular dyssynchorny according to the support condition using conductance catheter. We studied five goats with normal heart condition. A centrifugal LVAD was implanted under general anesthesia. We inserted the conductance catheter into the LV and RV and obtained the pressure-volume relationship. We defined the dyssynchronous status by the sign (plus or minus) of the LV volume (LVV) change is opposite to that of RV volume (RVV). (i.e., (dLVV/dt)*(dRVV/dt)
ISSN:0391-3988
1724-6040