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What is a Tricuspid Atresia?

Tricuspid atresia is a rare congenital heart defect in which the tricuspid valve, located between the right atrium and right ventricle, does not form properly. As a result, blood cannot flow directly from the right atrium into the right ventricle, which is usually underdeveloped.

Babies with tricuspid atresia need an opening between the upper chambers of the heart, usually an atrial septal defect (ASD) or patent foramen ovale, to allow blood to reach the left side of the heart. A ventricular septal defect (VSD) or patent ductus arteriosus (PDA) may also help blood reach the lungs. The severity of the condition depends on the heart's anatomy and how much blood can flow to the lungs and the rest of the body. Treatment usually involves specialised medical care and staged procedures to improve circulation.

What is the Importance of Timely Treatment?

Early diagnosis and treatment are essential because tricuspid atresia can limit the amount of oxygen-rich blood reaching the body. Some newborns develop cyanosis (a bluish or greyish colour of the lips and skin), breathing difficulties or poor feeding soon after birth.

Treatment depends on the baby's anatomy and pulmonary blood flow. Initial care may include prostaglandin E1 to keep the ductus arteriosus open when necessary, respiratory and circulatory support, and selected catheter-based procedures. Surgery may be required to establish adequate blood flow to the lungs, followed by staged procedures such as the bidirectional Glenn and Fontan operations.

Lifelong follow-up with a congenital heart specialist is important, even after surgery, because complications involving heart rhythm, ventricular function, blood clots, liver health or Fontan circulation may develop over time.

What are the Common Symptoms of Tricuspid Atresia?

  • Cyanosis: Bluish or greyish skin, lips, or nails may appear soon after birth because of low blood oxygen levels.
  • Breathing Difficulties: Rapid or difficult breathing may occur when the baby has inadequate oxygen delivery or associated heart problems.
  • Poor Feeding: Babies may have difficulty feeding, tire easily during feeds, or take longer to feed.
  • Weak Pulse: Reduced oxygen delivery and impaired circulation may contribute to weak pulses.
  • Rapid Heartbeat: A fast heartbeat may occur as the heart attempts to maintain adequate circulation.
  • Poor Weight Gain: Babies with significant congenital heart disease may have difficulty gaining weight and growing normally.

Causes and Risk Factors of Tricuspid Atresia

Causes

  • Abnormal Heart Development: TGA occurs because the major arteries do not develop with their normal connections to the ventricles during fetal heart development.
  • Genetic Factors: Genetic or chromosomal factors may contribute to some congenital heart defects, although the specific cause of d-TGA is unknown in most cases.
  • Developmental Factors: Complex interactions between genetic and environmental factors may influence heart development.

Risk Factors

  • Maternal Diabetes: Poorly controlled diabetes during pregnancy has been associated with an increased risk of d-TGA.
  • Family History: A family history of congenital heart defects may increase the likelihood of certain congenital cardiac abnormalities.
  • Genetic or Chromosomal Conditions: Some congenital heart defects occur as part of genetic or chromosomal conditions.
  • Pregnancy-Related Factors: Certain maternal health, environmental, medication, or nutritional factors may contribute to congenital heart defect risk, although most cases of d-TGA do not have an identifiable cause.

Latest Research and Technologies in the Treatment of Tricuspid Atresia in Singapore

  • Current care for tricuspid atresia focuses on early diagnosis, detailed assessment of heart anatomy, individualised treatment planning and long-term monitoring. Fetal echocardiography may identify the condition before birth, while postnatal echocardiography helps confirm the diagnosis and assess associated defects and blood flow.
  • Depending on the baby's anatomy, treatment may include prostaglandin E1, a ductal stent or a surgical shunt to support blood flow to the lungs. Pulmonary artery banding may be considered when pulmonary blood flow is excessive. Selected babies may need balloon atrial septostomy if the opening between the atria is too restrictive.
  • The bidirectional Glenn and Fontan procedures are important stages in the treatment pathway for many children with tricuspid atresia. The timing and suitability of each procedure depend on the child's heart anatomy, pulmonary artery pressures, lung vascular resistance and overall clinical condition.
  • In Singapore, specialised paediatric cardiac services provide multidisciplinary assessment and treatment for complex congenital heart disease. The treating team can explain which procedures and follow-up services are available and appropriate for an individual patient.

Treatment options for Tricuspid Atresia

Ductal Stenting: In selected babies, a stent may be placed in the ductus arteriosus to maintain pulmonary blood flow and reduce the need for an early surgical shunt.

Systemic-to-Pulmonary Artery Shunt: A surgical shunt may be created to increase blood flow to the lungs when the baby's anatomy requires additional pulmonary blood flow.

Balloon Atrial Septostomy (BAS) : A cardiologist performs a BAS (also known as a Rashkind procedure). They insert a thin, flexible tube called a catheter into a blood vessel, usually in the groin, and thread it up to the heart.

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Pulmonary Artery Banding: If too much blood is reaching the lungs, pulmonary artery banding may be used in selected patients to control pulmonary blood flow and protect the pulmonary circulation.

Bidirectional Glenn Operation : In this staged procedure, the superior vena cava is connected directly to the pulmonary arteries, allowing blood from the upper body to flow to the lungs without passing through the right ventricle.

Fontan Procedure : The final major stage of palliation connects venous blood from the lower body to the pulmonary arteries, allowing blood to reach the lungs without ventricular pumping. Selected patients may undergo a fenestration.

Heart Transplantation : Rarely, transplantation may be considered when the heart becomes severely weakened or when the Fontan circulation fails, and other treatments are unsuitable.

  • Clinical assessment:
  • Prenatal Assessment: Routine pregnancy ultrasound may raise suspicion of tricuspid atresia, followed by fetal echocardiography for detailed assessment.
  • Medical and Birth History: Assessment includes pregnancy history, delivery details, cyanosis, breathing, feeding, and associated congenital conditions.
  • Physical Examination: Evaluation of skin colour, breathing, heart sounds, pulse, blood pressure, oxygen saturation, and signs of poor circulation.
  • Electrocardiogram (ECG): May provide information about heart rhythm and electrical activity.
  • Blood Tests: Blood gases, glucose, electrolytes, blood counts, and other tests may be used during neonatal stabilisation and treatment.
  • Imaging Tests:
  • Fetal Echocardiography: Provides detailed prenatal assessment of the heart chambers, valves, great arteries, septal defects, and blood flow.
  • Transthoracic Echocardiography (TTE): The primary postnatal imaging test used to confirm tricuspid atresia and assess ventricular size, associated defects, pulmonary blood flow, and cardiac function.
  • Chest X-Ray: May provide information about heart size and pulmonary blood flow.
  • Cardiac CT: May provide detailed anatomical information in selected complex cases or when additional anatomical assessment is required.
  • Cardiac MRI: Can assess ventricular function, pulmonary arteries, blood flow, and other structures during later childhood or adult follow-up.
  • Cardiac Catheterization: Measures pressures and oxygen levels within the heart and blood vessels and can also be used for selected interventions.
  • Three-Dimensional Imaging: Advanced imaging may assist detailed anatomical assessment and procedural planning in selected complex cases.

MediRehab (a chain of Rehab centres, part of MediGence) provides comprehensive tele rehabilitation services designed to support Tricuspid Atresia patients in Singapore. These services include:

  • Cardiac Rehabilitation: Selected children and adults may benefit from structured rehabilitation according to cardiac function and treatment history.
  • Gradual Physical Activity: Increase activity according to oxygen levels, ventricular function, symptoms, rhythm status, and congenital heart specialist advice.
  • Paediatric Developmental Support: Children with complex congenital heart disease may require developmental assessment and early supportive interventions.
  • Occupational Therapy: Selected children may benefit from support with age-appropriate functional activities and independence.
  • Exercise Assessment: Older children and adults may undergo exercise testing to guide safe physical activity.
  • Long-Term Congenital Heart Follow-Up: Regular specialist assessments help monitor ventricular function, oxygen levels, rhythm, Fontan circulation, liver health, exercise capacity, and other potential complications.
  • Medicines used in Tricuspid Atresia depend on the baby's anatomy, oxygen level, pulmonary blood flow, ventricular function, and treatment stage. Doctors may give prostaglandin E1 soon after birth to keep the duct open and support pulmonary blood flow. Other medicines may help manage heart failure, fluid retention, blood pressure, or abnormal heart rhythms. After staged surgery, some patients may require medicines such as diuretics, rhythm-control medicines, antiplatelet therapy, or anticoagulation depending on their circulation and individual risk.

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Hospitals for Tricuspid Atresia in Singapore

Farrer Park Hospital: Top Doctors, and Reviews
Farrer Park Hospital

Singapore, Singapore

Apart from in-detail treatment procedures available, Farrer Park Hospital located in Connexion, Singapore has a wide variety of facilities available for International Patients. Some of the facilities which are provided by them are Accommodation, Airport Transfer, Choice of Meals, Interpreter, SIM, TV inside room. Also listed below are some of the most prominent infrastructural details:

  • A medical centre is linked to the Farrer Park Hospital Complex, Connexion, Singapore
  • The focus of the hospital is to bring together two essential elements: those of healthcare combined with hospitality.
  • There is a building with 20 different stories which comprises Owen Link, hotel and spa.
  • Personal attention and patient care focus is maintained with a system in place of listening, analysing, evaluating and then implementing a treatment plan.
  • 121 bed capacity
  • Technology and innovations help provide the best of medical and surgical treatment options.
  • Professionally implemented international patient care systems
  • Suites: Cardiovascular, day surgery, endoscopy, major surgery, nuclear medicine, radiation oncology, and inpatient suite
  • Diagnostic imaging and intensive care unit
  • 24 hour emergency clinic and pharmacy
  • Facilities such as dialysis, nutrition services, rehab centre, and teaching clinic
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Why Choose Singapore for Tricuspid Atresia Treatment?

  • Experienced Paediatric Cardiac Specialists: Access to paediatric cardiologists, congenital heart surgeons, cardiac intensivists, and specialists experienced in complex congenital heart disease.
  • Advanced Newborn Cardiac Care: Specialised centres may provide neonatal intensive care, continuous monitoring, respiratory support, and urgent cardiovascular stabilisation.
  • Advanced Echocardiography: Fetal and postnatal echocardiography can support early diagnosis and treatment planning.
  • Cardiac Catheterisation Facilities: Eligible patients may have access to ductal stenting, diagnostic catheterisation, and other catheter-based procedures.
  • Staged Congenital Heart Surgery: Specialised centres can perform systemic-to-pulmonary shunts, Glenn procedures, Fontan procedures, and surgery for associated defects.
  • Multidisciplinary Heart Teams: Paediatric cardiologists, cardiac surgeons, intensivists, anaesthesiologists, imaging specialists, nurses, nutritionists, and rehabilitation professionals can coordinate complex care.
  • Long-Term Congenital Heart Follow-Up: Specialist programmes can monitor patients from childhood into adulthood for Fontan-related complications, arrhythmias, ventricular function, and exercise capacity.
  • International Patient Support: Many major Singapore hospitals assist international patients with medical records, appointments, treatment coordination, accommodation, and follow-up.

Frequently Asked Questions

Tricuspid atresia usually requires staged treatment rather than one operation. Recovery time varies after each procedure, depending on the baby's condition and any complications. The treatment pathway often extends through infancy and early childhood. Lifelong follow-up with a congenital heart specialist is necessary, even after the Glenn and Fontan procedures, because these operations improve circulation but do not create a normal two-ventricle heart.

Many children and adults who have received treatment for tricuspid atresia can walk and participate in everyday activities. Their exercise capacity varies according to heart function, oxygen levels, heart rhythm and the type of surgery they have undergone. A congenital heart specialist should provide individualised advice about safe physical activity.

Specialist paediatric cardiac centres in Singapore provide services for diagnosing and managing complex congenital heart defects. Depending on the centre and the patient's needs, care may include echocardiography, cardiac catheterisation, neonatal intensive care, staged heart surgery and long-term follow-up. Families should confirm the availability of specific procedures with their chosen centre.

Many major Singapore hospitals have international patient departments that assist overseas families with medical records, appointments, treatment coordination, accommodation, interpretation where available, and follow-up arrangements. However, critically ill newborns require immediate local stabilisation and should not have urgent treatment delayed for international travel.

Look for a centre with paediatric cardiologists, congenital-heart surgeons, neonatal cardiac intensive care, advanced echocardiography, cardiac catheterisation facilities, and experience with staged single-ventricle procedures such as the Glenn and Fontan operations. Access to lifelong congenital heart follow-up is also important.

The success rate depends on the heart's anatomy, associated defects, pulmonary artery pressure, heart function, surgical stage and complications. Ask the treating congenital heart team about outcomes for patients with a similar condition and procedure, including both short-term risks and long-term follow-up needs.

Many specialised Singapore paediatric cardiac centres have multidisciplinary teams experienced in managing complex congenital heart conditions, including neonatal stabilisation, catheter-based procedures, staged surgical palliation, postoperative intensive care, and long-term congenital-heart follow-up.

Risks depend on the patient's condition and the procedure performed. Catheter-based procedures may involve bleeding, blood-vessel injury, infection, arrhythmias, or other complications. Surgical procedures may involve bleeding, infection, rhythm disturbances, blood clots, neurological complications, organ dysfunction, or problems with the surgical circulation.

Tricuspid atresia is a congenital heart condition, not an injury. If a newborn develops blue or grey skin, breathing difficulty, poor feeding, extreme sleepiness, or other signs of low oxygen, seek emergency medical care immediately. Tricuspid atresia is a critical congenital heart defect that may require urgent stabilisation and treatment soon after birth.

Tricuspid atresia does not directly cause physical or skeletal deformities. However, the condition and staged surgeries can be associated with long-term cardiac complications that may affect exercise capacity, development, or physical functioning. Lifelong congenital heart follow-up is important.

Yes. Tricuspid atresia and its treatment can affect exercise capacity, oxygen levels, daily activities, development, and overall well-being. Many people who undergo successful staged treatment can live active and productive lives, although ongoing medical care and individual activity guidance may be necessary.

Yes. Untreated tricuspid atresia can cause severe low oxygen levels, inadequate blood flow to the lungs and body, heart failure, and potentially life-threatening complications. Even after surgical treatment, patients require lifelong monitoring because arrhythmias, ventricular dysfunction, blood clots, fluid retention, and other complications may develop over time.

Tricuspid atresia develops during fetal heart formation and generally cannot be prevented. The exact cause is unknown in most cases. Appropriate prenatal care and management of maternal health conditions can support overall pregnancy health, while prenatal screening and fetal echocardiography may help identify the condition early.

Tricuspid atresia can occur in any pregnancy and most cases do not have a clearly identifiable cause. Some congenital heart defects may be associated with genetic or chromosomal factors, but most babies with tricuspid atresia do not have a known preventable risk factor.

Author

Fauzia Zeb Fatima
Fauzia Zeb Fatima

M.Pharm

4 Years of Experience

Fauzia Zeb is a distinguished medical and scientific content writer with a robust academic foundation in pharmaceutical sciences, holding a B.Pharm and M.Pharm degree from prestigious institutions, including MIT and Jamia Hamdard University. Her comprehensive expertise in pharmacology, clinical sciences, and biomedical research enables her to translate complex medical and scientific concepts into precise, evidence-based content tailored for diverse audiences. Specializing in peer-reviewed articles, clinical blog posts, and research-driven publications, she demonstrates a consistent ability to bridge the gap between advanced medical science and accessible, audience-specific communication. View More

Reviewer

Dr. Nityanand Tripathi
Dr. Nityanand Tripathi

Interventional Cardiologist

29 Years of Experience

With a rich experience of more than 29 years, Dr. Nityanand has gained a vast spectrum of skills and expertise in performing all types of complex cardiac procedures. He is an expert in clinical & interventional cardiology and electrophysiology. He studied his medicine (MBBS) and MD from the Institute of Medical Sciences of Banaras Hindu University, Varanasi, and later completed his DM in Cardiology from the prestigious King George Medical University, Lucknow. View More

Last Reviewed - January 2026