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Updated: Jun 7, 2026

FISH for Pre-implantation Genetic Diagnosis
Published on: February 23, 2011
Antenatal diagnosis of trisomy 18, harm and parental choice
1Oxford Uehiro Centre for Practical Ethics, The University of Oxford, UK. dominic.wilkinson@ethox.ox.ac.uk
Insights
Continued life for a fetus with trisomy 18 may pose harms. Doctors should support parents continuing pregnancies and provide high-quality palliative care for infants with trisomy 18.
Area of Science:
- Medical ethics
- Fetal medicine
- Neonatal care
Background:
- Trisomy 18 (Edwards syndrome) is a severe genetic disorder often associated with significant health challenges and limited life expectancy.
- This commentary examines the ethical considerations surrounding the continuation of life for a fetus diagnosed with trisomy 18.
Discussion:
- The potential harms of continued life for a fetus with trisomy 18 are weighed against parental autonomy and the principle of beneficence.
- Arguments are presented for avoiding aggressive interventions like major surgery and prolonged intensive care when the chance of benefit is minimal.
- Emphasis is placed on the importance of honest communication and support for parents making decisions about continuing their pregnancy.
Key Insights:
- While aggressive medical interventions may be questioned, the decision to continue a pregnancy should be respected and supported.
- High-quality palliative care is crucial for infants with trisomy 18, focusing on comfort and quality of life.
- Ethical medical practice requires balancing potential harms with parental rights and compassionate care.
Outlook:
- Future discussions should focus on enhancing palliative care models for infants with trisomy 18.
- Continued dialogue is needed on ethical decision-making in complex fetal diagnoses.
- Improving support systems for families facing trisomy 18 diagnoses is essential.
Abstract:
In this commentary I assess the possible harms to a fetus with trisomy 18 of continued life. I argue that, although there is good reason to avoid subjecting infants to major surgery and prolonged intensive care where there is little chance of benefit, doctors should support and engage honestly with parents who decide to continue their pregnancies. We should ensure that infants with trisomy 18 have access to high quality palliative care.
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