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Four-year cardiac magnetic resonance (CMR) follow-up of patients treated with percutaneous pulmonary valve stent implantation

  • Magnetic Resonance
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European Radiology Aims and scope Submit manuscript

Abstract

Objectives

To investigate follow-up after percutaneous pulmonary valve implantation (PPVI).

Methods

Forty patients with pulmonary conduit dysfunction (males/females 24/16; 21 ± 08 years; 12 tetralogy of Fallot, 11 aortic valve disease, 17 other congenital heart disease) were planned for CMR before PPVI and repeated 7 times up to 48 months. CMR prospective results regarded: pressure gradient (PG) and regurgitation fraction (RF); end-diastolic volume, end-systolic volume, and stroke volume indexed to body surface area (EDVI, ESVI, and SVI); ejection fraction (EF) of right and left ventricles (RV, LV). A Friedman test was used for comparisons.

Results

Overall, PG (31 ± 06 to 16 ± 4 mmHg), RF (16 ± 17 to 0.3 ± 1 %), RVEDVI (82 ± 38 to 58 ± 12 ml/m2), and RVESVI (44 ± 12 to 30 ± 13 ml/m2) declined (p < 0.001), RVEF (49 ± 13 to 58 ± 12 %) and RVSVI (from 38 ± 14 to 40 ± 8 ml/m2) increased (p < 0.001), LVEDVI (67 ± 17 to 73 ± 18 ml/m2) and LVSVI (37 ± 11 to 43 ± 10 ml/m2) increased (p = 0.034 and p < 0.001). Two patients had valve fracture at 24 and 36 months and underwent surgery. One patient had stent restenosis at 24 months and underwent percutaneous retreatment. Baseline/follow-up CMR did not predict PPVI failure.

Conclusions

CMR demonstrated restored pulmonary conduit function, reduced RV volumes and increased RV and LV function but did not predict valve fracture/restenosis.

Key points

• A CMR 4-year follow-up after PPVI showed restored pulmonary conduit function

• RV volumes were significantly reduced

• RV function was significantly better in terms of increased EF and SVI

• LV function was significantly better in terms of increased EDVI and SVI

• Baseline/follow-up CMR did not predict three cases of PPVI failure

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Acknowledgments

The scientific guarantor of this publication is Professor Francesco Sardanelli. M Carminati is consultant/proctor for Medtronic and Edwards; F. Sardanelli has received research grants from and is a member of the speakers’ bureau for Bracco Imaging. The remaining authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article. The authors state that this work has not received any funding. One of the authors has significant statistical expertise. Institutional Review Board approval was obtained. Methodology: retrospective, observational, performed at one institution.

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Correspondence to Francesco Secchi.

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Secchi, F., Resta, E.C., Cannaò, P.M. et al. Four-year cardiac magnetic resonance (CMR) follow-up of patients treated with percutaneous pulmonary valve stent implantation. Eur Radiol 25, 3606–3613 (2015). https://doi.org/10.1007/s00330-015-3781-5

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  • DOI: https://doi.org/10.1007/s00330-015-3781-5

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