Introduction

Marfan syndrome is a genetic connective tissue disorder that affects various organ systems in the body, including the skeletal, cardiovascular, and ocular systems.¹ Individuals with Marfan syndrome often face unique challenges and considerations, particularly during pregnancy. Understanding these considerations and receiving comprehensive guidance are essential for ensuring the health and well-being of both the pregnant parent and the baby. 

Marfan syndrome is caused by mutations in the FBN1 gene, which encodes for fibrillin-1, a protein that plays a crucial role in maintaining the integrity of connective tissues. This syndrome affects approximately 1 in 5,000 people worldwide and can manifest with a wide range of symptoms, including tall stature, joint hypermobility, scoliosis, and ocular abnormalities such as lens dislocation and myopia (short-sightedness).¹ However, the most serious complications of Marfan syndrome are those involving the cardiovascular system, including aortic root dilation, aortic dissection, and mitral valve prolapse. 

Purpose of this article

The purpose of this article is to provide comprehensive guidance and considerations for pregnant individuals with Marfan syndrome. From pre-pregnancy planning to delivery and postpartum care, we aim to address the specific needs and challenges faced by individuals with Marfan syndrome during pregnancy and provide practical recommendations for navigating this journey with confidence and support. 

Importance of understanding pregnancy considerations for individuals with Marfan syndrome 

Pregnancy poses unique challenges for individuals with Marfan syndrome due to the potential exacerbation of cardiovascular complications and the increased risk of maternal and foetal complications.² Pregnancy can exacerbate cardiovascular complications associated with Marfan syndrome, increasing the risk of aortic dissection and other cardiovascular events. Additionally, Marfan syndrome can impact foetal development and pregnancy outcomes, leading to preterm labor, preeclampsia, and other complications. Maintaining a healthy lifestyle is essential for individuals with Marfan syndrome during pregnancy to minimise risks and optimise outcomes. This includes regular physical activity, balanced nutrition, adequate hydration, and sufficient rest. Dietary considerations and supplementation needs should be discussed with healthcare providers to ensure optimal maternal and foetal nutrition. Additionally, strategies for managing stress and emotional well-being are important for promoting maternal mental health and well-being during pregnancy.² Therefore, it is crucial for individuals with Marfan syndrome to receive specialised care and guidance throughout the pregnancy journey to minimise risks and optimise outcomes for both the pregnant parent and the baby. 

Pre-pregnancy planning

Pre-pregnancy planning is crucial for individuals with Marfan syndrome to assess risks, discuss family planning options, and receive appropriate counseling and support. This includes genetic counseling and testing to assess the risk of passing Marfan syndrome to offspring and to inform family planning decisions. Additionally, individuals with Marfan syndrome should undergo comprehensive medical evaluation and receive guidance on medication management and lifestyle modifications to optimise health before conception. 

Pregnancy monitoring and management 

The overall goal of prenatal care and monitoring in pregnant individuals with Marfan syndrome is to ensure a safe and healthy pregnancy and delivery, while managing the unique risks associated with this condition. This involves a collaborative, multidisciplinary approach to address the complex needs of both the pregnant parent and child throughout the pregnancy journey. During pregnancy, individuals with Marfan syndrome require prenatal care and monitoring to assess cardiovascular function, foetal growth, and pregnancy progression.³ Specialised tests and screenings may be recommended, including echocardiography, foetal ultrasound, and foetal monitoring, to monitor maternal and foetal well-being. Medication management may need to be adjusted to ensure maternal safety and foetal health, with a focus on minimising cardiovascular risks and managing symptoms. Care for pregnant individuals with Marfan syndrome typically involves a team of specialists, including obstetricians, cardiologists, and geneticists, to provide a comprehensive and coordinated approach.⁴ Regular consultations with these specialists ensure that any emerging issues are promptly addressed and that both the pregnant parent and baby receive optimal care. 

Pregnancy in individuals with Marfan syndrome is associated with an increased risk of aortic dissection, a life-threatening complication that requires immediate medical attention.⁴ Other potential complications include preterm labor, preeclampsia, and intrauterine growth restriction, which can impact pregnancy outcomes and maternal and foetal health. 

Foetal monitoring 

Regular foetal ultrasounds are essential to track the baby’s growth and development. These ultrasounds help in identifying any potential complications early and in ensuring that the foetus is developing normally.⁵ Detailed anatomical surveys can also detect any structural abnormalities that might be associated with Marfan syndrome. Foetal monitoring is necessary, especially in the later stages of pregnancy. This can include non-stress tests and biophysical profiles to ensure the foetus is not under any distress. These tests assess foetal heart rate, movement, muscle tone, and amniotic fluid levels, providing a comprehensive overview of foetal well-being. 

Medication management 

During pregnancy, the management of medications must be carefully adjusted. Beta-blockers, commonly used to reduce cardiovascular risks in individuals with Marfan syndrome, may need dosage adjustments to balance maternal safety and foetal health.⁵ It’s important to minimise cardiovascular risks while managing symptoms such as pain or high blood pressure. Medications are chosen and dosed with a focus on those that have been proven safe for both the mother and developing foetus. 

Lifestyle adjustment 

Pregnant individuals with Marfan syndrome are often advised to modify their physical activity to reduce strain on the cardiovascular system. This might include avoiding heavy lifting and strenuous exercise. Additionally, they may be advised to maintain a healthy diet and manage stress effectively, as these factors can influence overall cardiovascular health. 

Delivery and postpartum

Birth planning and delivery considerations for individuals with Marfan syndrome should be discussed with healthcare providers to ensure safe and appropriate care during labour and delivery. Delivery plans for individuals with Marfan syndrome are carefully developed to minimise cardiovascular stress during labour and delivery. Depending on the severity of cardiovascular complications, specialised delivery methods and interventions may be recommended to minimise risks and optimise outcomes for both the pregnant parent and the baby. In some cases, a planned caesarean section (C-section) may be recommended to reduce the risk of aortic dissection associated with physical stress of labour.⁵ Seeking support from healthcare providers, support groups, and online communities can be invaluable for individuals with Marfan syndrome during pregnancy. Healthcare providers can offer specialised care and guidance, while support groups and online communities can provide emotional support, practical advice, and shared experiences. 

Postpartum monitoring and follow-up care are essential for assessing maternal recovery, monitoring cardiovascular function, and addressing any postpartum complications or concerns. Additionally, family and friends play a crucial role in providing support and encouragement throughout the pregnancy journey.

Summary

Pregnancy presents unique challenges for individuals with Marfan syndrome, requiring specialised care, monitoring, and support to minimise risks and optimise outcomes for both the pregnant parent and the baby. By understanding the impact of Marfan syndrome on pregnancy, receiving comprehensive preconception counseling, and accessing specialised prenatal care, individuals with Marfan syndrome can navigate the pregnancy journey with confidence and support. With proper management and support, it is possible for individuals with Marfan syndrome to achieve a healthy successful pregnancy outcome, ensuring the well-being of both the pregnant parent and baby.