Related Experiment Video
Updated: Apr 13, 2026

Biventricular Assessment of Cardiac Function and Pressure-Volume Loops by Closed-Chest Catheterization in Mice
Published on: June 15, 2020
Quantifying Additional Procedures in Functionally Single-Ventricle Disease: A National Cohort Study
Qi Huang1, Deborah Ridout2, Victor Tsang3
1Clinical Operational Research Unit, Department of Mathematics, University College London, London, United Kingdom.
Insights
Children with single-ventricle heart disease often require reinterventions. This study found high rates of surgical and catheter procedures after staged palliation, highlighting the need for better interventions.
Area of Science:
- Pediatric Cardiology
- Congenital Heart Disease Research
- Health Services Research
Background:
- Congenital heart disease (CHD) affects many children, with functionally single-ventricle (f-SV) conditions requiring complex staged palliation.
- Reintervention rates are crucial metrics for evaluating healthcare quality in pediatric CHD management.
- Understanding reintervention patterns informs clinical practice and patient outcomes.
Purpose of the Study:
- To evaluate the rates of surgical and catheter reinterventions in children with f-SV CHD.
- To assess the incidence of additional procedures following staged palliation for f-SV CHD.
- To provide data for improving care and developing interventions for f-SV CHD.
Main Methods:
- Retrospective cohort study of children born with f-SV CHD (2000-2018) in England and Wales.
- Utilized national registry data with survival ascertained up to 2020.
- Employed competing risk analysis to determine the incidence of additional procedures, accounting for death or transplantation.
Main Results:
- Of 3307 children with f-SV CHD, 27.9% required additional surgery and 39.1% needed catheter interventions during follow-up.
- Cumulative incidence of additional surgery was 17.6% at 6 months post-stage 1, 8.3% at 2 years post-stage 2, and 8.4% at 5 years post-stage 3.
- Cumulative incidence of additional catheter interventions was 18.0% at 6 months post-stage 1, 14.7% at 2 years post-stage 2, and 23.7% at 5 years post-stage 3.
Conclusions:
- Quantifying reintervention rates is essential for informing parents and healthcare professionals involved in f-SV CHD care.
- The study highlights a significant need for interventions aimed at reducing reinterventions in this population.
- Further research should focus on strategies to minimize adverse outcomes associated with staged palliation for f-SV CHD.
Background:
Given their importance as a metric for health care evaluation, this study's aim was to evaluate the rates of surgical and catheter reinterventions for children with functionally single-ventricle (f-SV) congenital heart disease (CHD) undergoing staged palliation.
Methods:
We undertook a retrospective cohort study of children born with f-SV CHD between 2000 and 2018 in England and Wales, using the national registry, with survival ascertained in 2020. Competing risk analysis was used to describe the incidence of additional procedures that occurred first, during follow-up, accounting for competing events of death or transplantation.
Results:
Of 56,039 patients who received an intervention for CHD, 3307 (5.9%) had f-SV. The largest diagnostic subcategories were hypoplastic left heart syndrome (1266 [38.3%]), tricuspid atresia (448 [13.5%]), and double-inlet left ventricle (328 [9.9%]). During a median follow-up of 5.4 (interquartile range, 0.8-10.8) years, 921 (27.9%) patients had at least 1 additional interstage surgery and 1293 (39.1%) had at least 1 additional interstage catheter intervention. The cumulative incidence of additional surgery at 6 months after stage 1 was 17.6% (95% CI, 16.2%-19.0%); at 2 years after stage 2, 8.3% (7.2%-9.5%); and at 5 years after stage 3, 8.4% (7.0%-9.9%). The cumulative incidence of additional catheter at 6 months after stage 1 was 18.0% (16.6%-19.4%); at 2 years after stage 2, 14.7% (13.3%-16.2%); and at 5 years after stage 3, 23.7% (21.5%-26.0%).
Conclusions:
It is important to quantify additional procedures for children with f-SV disease to inform parents and health professionals, potentially facilitating the development of interventions that aim to reduce these important adverse outcomes.
Related Concept Videos
Mitral Stenosis II: Clinical features and Diagnostic Tests
Cardiomyopathy V: Interprofessional Care

