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Updated: Jul 4, 2026
11:16
In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
Published on: February 25, 2022
Current approaches to pulmonary regurgitation.
Alessandra Frigiola1, Victor Tsang, Johannes Nordmeyer
1Great Ormond Street Hospital for Children, London, United Kingdom.
Summary
Pulmonary homograft replacement and percutaneous pulmonary valve implantation significantly reduced right ventricular volumes and improved function in patients with pulmonary regurgitation. Left ventricular stroke volume also increased, indicating procedural benefit.
Area of Science:
- Cardiology
- Cardiac Surgery
- Interventional Cardiology
Background:
- Pulmonary regurgitation (PR) often necessitates interventions for right ventricular outflow tract reconstruction (RVOTR).
- Surgical pulmonary homograft replacement (PVR) and percutaneous pulmonary valve implantation (PPVI) are options for managing severe PR.
Purpose of the Study:
- To evaluate the effects of RVOTR with PVR and PPVI on ventricular function and volumes in patients with predominant PR.
- This study aimed to assess outcomes, not to compare the two approaches directly.
Main Methods:
- Prospective examination of 25 patients undergoing PVR with RVOTR and 11 patients undergoing PPVI for severe PR.
- Magnetic resonance imaging (MRI) was used for pre- and post-intervention assessments (1-year follow-up).
- Patients predominantly had tetralogy of Fallot.
Main Results:
- Both PVR and PPVI significantly reduced right ventricular end-diastolic and end-systolic volumes.
- Significant improvements in right ventricular and left ventricular effective stroke volume were observed in both groups post-intervention.
- NYHA classification was similar before interventions.
Conclusions:
- Both PVR with RVOTR and PPVI lead to reduced RV volumes and improved RV function.
- Increased left ventricular effective stroke volume is a key indicator of procedural benefit.
- PPVI represents a valuable addition to managing complex RVOT issues.
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