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High pulmonary vascular resistance in addition to low right ventricular stroke work index effectively predicts biventricular assist device requirement

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  • Artificial Heart (Clinical)
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Abstract

Although the right ventricular stroke work index (RVSWI) is a good index for RV function, a low RVSWI is not necessarily an indicator for the need for a right ventricular assist device at the time of left VAD implantation. We here aimed to determine a more precise indicator for the need for a biventricular assist device (BiVAD). In total, 116 patients (mean age, 38 ± 14 years), who underwent hemodynamic assessments preoperatively including 12 BiVAD patients, and had been followed at our institute from 2003 to 2015, were included. Multivariate logistic regression analysis indicated that RVSWI and pulmonary vascular resistance (PVR) were independent predictors of BiVAD requirement (P < 0.05 for both). In addition, all patients were classified into 4 groups: (1) normal (RVSWI > 5 g/m, PVR < 3.7 WU), (2) pulmonary hypertension (RVSWI > 5, PVR > 3.7), (3) RV failure (RVSWI < 5, PVR < 3.7), and (4) both pulmonary hypertension and RV failure (RVSWI < 5, PVR > 3.7), and examined. Most of the patients in Group 4 (75 %), with acutely depressed hemodynamics and inflammatory responses in the myocardium, required BiVAD. Overall, patients with BiVAD had a worse survival rate as compared with those with LVAD alone. In conclusion, high PVR in addition to low RVSWI effectively predicts BiVAD requirement.

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Authors and Affiliations

  1. Department of Therapeutic Strategy for Heart Failure, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan

    Teruhiko Imamura & Koichiro Kinugawa

  2. Department of Cardiac Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan

    Osamu Kinoshita, Kan Nawata & Minoru Ono

Authors
  1. Teruhiko Imamura
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  2. Koichiro Kinugawa
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  3. Osamu Kinoshita
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  4. Kan Nawata
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  5. Minoru Ono
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Correspondence to Teruhiko Imamura or Koichiro Kinugawa.

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Imamura, T., Kinugawa, K., Kinoshita, O. et al. High pulmonary vascular resistance in addition to low right ventricular stroke work index effectively predicts biventricular assist device requirement. J Artif Organs 19, 44–53 (2016). https://doi.org/10.1007/s10047-015-0867-4

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  • DOI: https://doi.org/10.1007/s10047-015-0867-4

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