Prenatal diagnosis and postnatal outcomes of absent pulmonary valve syndrome: A case series with genetic and hemodynamic insights
Abstract
Objectives: This study therefore aims to determine the perinatal prognosis and delineate the key risk factors associated with outcomes in fetuses with a prenatal diagnosis of absence of pulmonary valve syndrome (APVS), with particular emphasis on Doppler ultrasound parameters, the presence of extracardiac anomalies, and comprehensive genetic findings - including rare monogenic mutations - as significant contributors to the observed perinatal course.
Methods: This retrospective study included eight fetuses diagnosed with absent pulmonary valve syndrome (APVS) between 2020 and 2024 at a tertiary perinatology referral center. One patient with major extracardiac anomalies was electively terminated and excluded from the outcome analysis. For the remaining seven fetuses, detailed fetal echocardiographic assessments—including cardiac anatomy and Doppler hemodynamic parameters - were evaluated alongside genetic testing results (prenatal and/or postnatal), associated extracardiac anomalies, and postnatal clinical and surgical outcomes.
Results: Among eight fetuses prenatally diagnosed with APVS, one case was electively terminated due to major extracardiac anomalies and excluded from further analysis. All of the remaining seven cases resulted in live births. Four neonates underwent surgical intervention, three of whom survived postoperatively, yielding a surgical survival rate of 75%. Two fetuses that developed hydrops fetalis died in the early postnatal period before surgery could be performed. The overall perinatal mortality rate was 57.1%. Clinically significant genetic anomalies, including trisomy 21, 22q11.2 deletion, and a novel ABAT gene mutation detected via prenatal whole-exome sequencing, were identified in three patients (42.9%). Nonsurvivors were more likely to present with an absent ductus arteriosus and severely dilated pulmonary arteries.
Conclusions: Our study highlights that prognosis is more strongly influenced by prenatal hemodynamic markers - such as pulmonary artery velocities, ductus arteriosus status, and hydrops - than by anatomic subtype. The identification of both common chromosomal anomalies and novel ABAT gene mutations underscores the value of comprehensive genetic evaluation.
Keywords
Ethical Statement
References
- 1. Recker F, Weber EC, Strizek B, Geipel A, Berg C, Gembruch U. Management and outcome of prenatal absent pulmonary valve syndrome. Arch Gynecol Obstet. 2022;306(5):1449-1454. doi: 10.1007/s00404-022-06397-4.
- 2. Piacentini G, Mastromoro G, Romano V, Riccardi R, Orfeo L. Fetal echocardiographic features of absent pulmonary valve syndrome. Am J Obstet Gynecol. 2022;227(2):331-332. doi: 10.1016/j.ajog.2022.02.023.
- 3. Gottschalk I, Jehle C, Herberg U, et al. Prenatal diagnosis of absent pulmonary valve syndrome from first trimester onward: novel insights into pathophysiology, associated conditions and outcome. Ultrasound Obstet Gynecol. 2017;49(5):637-642. doi: 10.1002/uog.15977.
- 4. Torok K, Brettle E, Desai T, et al. Long-term outcomes in children with absent pulmonary valve syndrome: it is not just fixing the heart. Arch Dis Child. 2021;106(9):877-881. doi: 10.1136/archdischild-2020-320219.
- 5. Chelliah A, Moon-Grady AJ, Peyvandi S, et al. Contemporary Outcomes in Tetralogy of Fallot With Absent Pulmonary Valve After Fetal Diagnosis. J Am Heart Assoc. 2021;10(12):e019713. doi: 10.1161/JAHA.120.019713.
- 6. Szwast A, Tian Z, McCann M, et al. Anatomic variability and outcome in prenatally diagnosed absent pulmonary valve syndrome. Ann Thorac Surg. 2014;98(1):152-158. doi: 10.1016/j.athoracsur.2014.03.002.
- 7. Yang Z, Zhou L. Right aortic arch with mirror image branching accompanied by absent pulmonary valve syndrome and tricuspid stenosis: Prenatal echocardiographic diagnosis of an unusual congenital heart defect. Echocardiography. 2019;36(10):1952-1955. doi: 10.1111/echo.14466.
- 8. Toyokawa T, Inamura N, Kawazu Y, Kayatani F. Circular shunt in fetal absent pulmonary valve with tricuspid stenosis. Pediatr Int. 2023;65(1):e15480. doi: 10.1111/ped.15480.
Details
Primary Language
English
Subjects
Pediatric Cardiology, Obstetrics and Gynaecology
Journal Section
Research Article
Early Pub Date
August 28, 2025
Publication Date
November 4, 2025
Submission Date
July 14, 2025
Acceptance Date
August 18, 2025
Published in Issue
Year 2025 Volume: 11 Number: 6
Cited By
Profiling genetic outcomes in high-risk pregnancies: invasive prenatal diagnostics from a tertiary maternal–fetal medicine unit
Journal of Medicine and Palliative Care
https://doi.org/10.47582/jompac.1826984Corpus Callosum Anomalies: Prenatal Diagnosis, Genetic Findings, and Perinatal Outcomes
The European Research Journal
https://doi.org/10.18621/eurj.1830453