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Published in: Journal of Cardiovascular Translational Research 5/2019

01-10-2019 | Original Article

Right Ventricular Function After Pulmonary Artery Banding: Adaptive Processes Assessed by CMR and Conductance Catheter Measurements in Sheep

Authors: Hubert Gufler, Sabine Niefeldt, Johannes Boltze, Stephanie Prietz, Christian Klopsch, Sabine Wagner, Brigitte Vollmar, Can Yerebakan

Published in: Journal of Cardiovascular Translational Research | Issue 5/2019

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Abstract

This experimental study describes the adaptive processes of the right ventricular (RV) myocardium after pulmonary artery banding (PAB) evaluated by cine cardiac magnetic resonance (CMR), phase-contrast CMR (PC-CMR), and conductance catheter. Seven sheep were subjected to CMR 3 months after PAB. Conductance catheter measurements were performed before and 3 months after PAB. Four nonoperated, healthy, age-matched animals served as controls. Higher RV masses (p < 0.01), elevated RV end-systolic volumes (p < 0.05), and lower RV ejection fraction (p < 0.01) were observed in the operated group. The time-to-peak pulmonary artery flow was longer in the banding group (p < 0.01). RV maximal pressure and RV end-diastolic pressure correlated with the time-to-peak flow in the pulmonary artery (r = − 0.70 and − 0.69, respectively). In summary, PAB caused RV hypertrophy, increased myocardial contractility, and decreased RV-EF and cardiac output. The time-to-peak pulmonary artery flow correlated with RV pressures.
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Metadata
Title
Right Ventricular Function After Pulmonary Artery Banding: Adaptive Processes Assessed by CMR and Conductance Catheter Measurements in Sheep
Authors
Hubert Gufler
Sabine Niefeldt
Johannes Boltze
Stephanie Prietz
Christian Klopsch
Sabine Wagner
Brigitte Vollmar
Can Yerebakan
Publication date
01-10-2019
Publisher
Springer US
Published in
Journal of Cardiovascular Translational Research / Issue 5/2019
Print ISSN: 1937-5387
Electronic ISSN: 1937-5395
DOI
https://doi.org/10.1007/s12265-019-09881-6

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