What is the clinical evidence from this study?

Study design: Review. Population: Patients with repaired tetralogy of Fallot and chronic severe pulmonary regurgitation undergoing pulmonary valve replacement (n=3118). Intervention: Pulmonary valve replacement (surgical or transcatheter) vs. No pulmonary valve replacement or deferred PVR. Primary outcome: Right ventricular remodeling after pulmonary valve replacement measured by CMR-derived RV end-diastolic volume index (RVEDVi), RV end-systolic volume index (RVESVi), and other functional parameters (~30-40% reduction in RVEDVi and RVESVi within 6-12 months post PVR).

What does this research mean for the field?

Pulmonary valve replacement (PVR) effectively reduces chronic pulmonary regurgitation and improves right ventricular size and symptoms. Novelty: ClaimNovelty.SYNTHESIS. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This review aims to evaluate the timing of pulmonary valve replacement and its effect on ventricular remodelling and long-term outcomes.

February 8, 2026Open Access

Pulmonary Valve Replacement: Update on Timing and Ventricular Remodelling

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Key result

Pulmonary valve replacement reduces RV volumes ~30% in repaired tetralogy of Fallot with severe pulmonary regurgitation.

~30-40% reduction in RVEDVi and RVESVi within 6-12 months post PVR
n=3,118

Why the study?

The optimal timing of pulmonary valve replacement for chronic pulmonary regurgitation after tetralogy of Fallot or RVOT repair remains unresolved, balancing irreversible myocardial damage against risks of repeated reinterventions.

Does pulmonary valve replacement improve ventricular remodelling and clinical outcomes in patients with chronic pulmonary regurgitation after tetralogy of Fallot repair?

Population

Patients with chronic PR after repair of TOF and other RVOT interventions

Comparison

Early vs deferred pulmonary valve replacement

Design

Review

Authors

AOAlmudena Ortiz-GarridoHospital Regional Universitario de Málaga MJMonika Różewicz JuraszekUniversity Hospital Schleswig-Holstein DGDominik Daniel GabbertPediatric Cardiology

Discussion

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Implication

Supports symptomatic benefit from PVR in repaired TOF with severe PR; leaves open survival benefit and arrhythmia impact.

Key Points

This review aims to evaluate the timing of pulmonary valve replacement and its effect on ventricular remodelling and long-term outcomes.
Critical appraisal of current evidence on ventricular remodelling after pulmonary valve replacement
Discussion of CMR and echocardiographic markers used in assessment
Examination of classic and emerging risk markers related to timing of intervention
Pulmonary valve replacement significantly reduces pulmonary regurgitation and improves right ventricular size and symptoms
No conclusive survival benefit or consistent data on arrhythmia outcomes was demonstrated
Gaps identified include the need for more comparative studies and a better understanding of myocardial interaction factors

Structured PICO

Does pulmonary valve replacement improve ventricular remodelling and clinical outcomes in patients with chronic pulmonary regurgitation after tetralogy of Fallot repair?

Population

Patients with chronic pulmonary regurgitation (PR) after the repair of tetralogy of Fallot (TOF) and other right ventricular outflow tract (RVOT) interventions.

Intervention

Pulmonary valve replacement (PVR), whether surgical or transcatheter.

Outcome

Ventricular remodelling (RV size), symptoms, electrocardiographic markers, survival, and arrhythmic outcomes.

Main Result

Effect estimate: ~30-40% reduction in RVEDVi and RVESVi within 6-12 months post PVR

Pulmonary valve replacement provides consistent reverse remodelling and symptomatic benefit in patients with chronic pulmonary regurgitation after TOF repair, but the optimal timing remains uncertain due to a lack of conclusive survival benefit and conflicting data on arrhythmic outcomes.

Limitations

No randomized controlled trials comparing early versus late pulmonary valve replacement exist, relying mainly on observational and retrospective cohort data with confounding by indication.
Heterogeneity in patient populations, surgical techniques, imaging protocols, and prosthetic valve types over decades.
Lack of consensus on universal volumetric or electrocardiographic thresholds for optimal timing of pulmonary valve replacement.
Limited long-term comparative data on survival and arrhythmic outcomes post PVR.
Technical challenges in measuring diffuse myocardial fibrosis and advanced imaging biomarkers consistently across centers.
Insufficient data specifically addressing older adult populations with repaired tetralogy of Fallot.
Lack of prospective randomized or carefully matched comparative studies of early versus deferred PVR
Limited understanding of how myocardial fibrosis, RV hypertrophy, and diastolic dysfunction interact with volume load and timing to influence long-term outcomes
Under-representation of adult and older adult TOF cohorts
Insufficient integration of multiparametric risk scores and machine-learning approaches into clinical decision-making

Cite This Study

Ortiz-Garrido et al. (2026) conducted a review in Patients with repaired tetralogy of Fallot and chronic severe pulmonary regurgitation undergoing pulmonary valve replacement (n=3,118). Pulmonary valve replacement (surgical or transcatheter) vs. No pulmonary valve replacement or deferred PVR was evaluated on Right ventricular remodeling after pulmonary valve replacement measured by CMR-derived RV end-diastolic volume index (RVEDVi), RV end-systolic volume index (RVESVi), and other functional parameters (~30-40% reduction in RVEDVi and RVESVi within 6-12 months post PVR). Pulmonary valve replacement reduces right ventricular volumes by approximately 30–40% within 6 to 12 months in patients with repaired tetralogy of Fallot and chronic severe pulmonary regurgitation.

synapsesocial.com/papers/698827e20fc35cd7a8846d76 https://doi.org/10.3390/jcm15031295

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Pulmonary Valve Replacement: Update on Timing and Ventricular Remodelling

Discussion

Member takes

Implication

Key Points

Structured PICO

Main Result

Limitations

Cite This Study

Pulmonary Valve Replacement: Update on Timing and Ventricular Remodelling

Discussion

Member takes

Implication

Key Points

Structured PICO

Main Result

Limitations

Cite This Study

Also Consider

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