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Changes in Ventricular Geometry Predict Severity of Right Ventricular Hypertension

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Abstract

Changes in ventricular geometry are often seen in patients with right ventricular hypertension secondary to pulmonary hypertension (PH). Progressive systolic bowing of the inter-ventricular septum occurs with increasing right ventricular pressure (RVp) and can be quantified with the left ventricular end-systolic eccentricity index (LVEI). Only limited data exist in children to evaluate the relationship between the LVEI and invasive RVp. We sought to assess the correlation between the LVEI and an invasively measured peak systolic RVp to aortic pressure (pAo) ratio. Medical records of patients undergoing echocardiography within 30 days of right and left heart catheterization for evaluation of PH between February 2009 and March 2014 were retrospectively reviewed. Forty-six studies in 29 subjects (median age 3.8 years, 46 % female), with a median time from echocardiogram to catheterization of −1.0 days, were included for analysis. The mean LVEI was 1.6 ± 0.5, and mean RVp/pAo ratio was 0.68 ± 0.26. There was a significant positive correlation (r = 0.76, p < 0.001) between LVEI and RVp/pAo ratio. ROC analysis demonstrated an area under the curve = 0.91 for prediction of RVp/pAo >0.50 by the LVEI. An LVEI >1.48 had a sensitivity of 76 % and specificity of 100 % in predicting RVp/pAo >0.50, while an LVEI >1.24 had a sensitivity of 88 % and specificity of 83 %. Echocardiographically derived LVEI is strongly correlated with invasively determined RVp/pAo ratio. In combination with other noninvasive measures of RVp, LVEI may help minimize the need for invasive patient evaluation.

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Authors and Affiliations

  1. The Heart Institute, Cincinnati Children’s Hospital Medical Center, Room C4.350AT, 3333 Burnet Ave, Cincinnati, OH, 45229, USA

    Konstantin Averin, Erik Michelfelder, Joshua Sticka, Michelle Cash & Russel Hirsch

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  1. Konstantin Averin
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  2. Erik Michelfelder
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  3. Joshua Sticka
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  4. Michelle Cash
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  5. Russel Hirsch
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Correspondence to Konstantin Averin.

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Averin, K., Michelfelder, E., Sticka, J. et al. Changes in Ventricular Geometry Predict Severity of Right Ventricular Hypertension. Pediatr Cardiol 37, 575–581 (2016). https://doi.org/10.1007/s00246-015-1317-z

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