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PubMed This is a summary of 17 peer-reviewed journal articles Updated
Pediatric Cardiology

Understanding Your Baby's TGA Diagnosis

At a Glance

Transposition of the Great Arteries (TGA) is a treatable structural heart defect requiring immediate specialized care. Babies are typically stabilized with medication or a minor procedure before undergoing the Arterial Switch Operation (ASO) in their first week of life. Prognosis is excellent.

Receiving a diagnosis of Transposition of the Great Arteries (TGA) for your baby is often a moment of profound shock and fear. It is natural to feel a sense of panic when you learn your child’s heart isn’t working as it should [1]. While this diagnosis is a medical emergency that requires specialized care, it is also a condition that modern pediatric cardiology treats with high success [2][3].

TGA occurs in approximately 1 out of every 5,000 live births (0.02%) [4]. It is not caused by anything you did or didn’t do during pregnancy; it is a structural change in how the heart formed early on.

The Early Days: What Happens Next

If your baby has the most common form (D-TGA), the medical team follows a well-established protocol to stabilize them until surgery:

  1. Maintaining the “Ductus”: Before birth, all babies have a natural opening called the ductus arteriosus that allows blood to bypass the lungs. At birth, this usually closes. For a baby with D-TGA, doctors use a medication called Prostaglandin E1 (PGE1) to keep this opening patent (open), allowing oxygen-rich and oxygen-poor blood to mix [5][6].
  2. Improving Mixing (Septostomy): Sometimes, the medication isn’t enough to get oxygen levels high enough. In these cases, a cardiologist may perform a balloon atrial septostomy (also called a Rashkind procedure). They use a small balloon to slightly enlarge a hole between the upper chambers of the heart to improve blood mixing [5][7].
  3. The Arterial Switch Operation (ASO): This is the standard “fix” for D-TGA, typically performed within the first week of life (often between 3 to 7 days old) for a simple D-TGA [8]. It may be done slightly later if your baby has other defects like a hole in the heart (VSD). Surgeons move the arteries to their correct positions and “re-plant” the tiny coronary arteries that supply the heart muscle [9].

Timeline of Care

While every baby is different, most babies with D-TGA will spend roughly 2 to 4 weeks in the hospital total, depending on their recovery from surgery [8].

Looking Toward the Future

The outlook for babies born with D-TGA today is vastly different than it was decades ago. In high-volume cardiac centers, the survival rate for the Arterial Switch Operation is excellent [8][10].

Most children who have the ASO grow up to lead active, full lives [11]. While they will need lifelong monitoring by a congenital cardiologist, the vast majority of TGA survivors reach adulthood and report a good quality of life [12][13].

Caring for the Caregivers

It is vital to acknowledge the emotional toll this takes on you. Parents of children with critical heart defects often experience high levels of stress, anxiety, and even symptoms of PTSD [1][14]. Fathers, in particular, may feel their distress is overlooked [15]. Seeking psychosocial support—whether through hospital social workers, therapists, or parent support groups—is not a sign of weakness, but a necessary part of caring for your child by ensuring you are healthy enough to care for them [16][17].

Common questions in this guide

What happens immediately after a baby is born with TGA?
Doctors will stabilize the baby using a medication called Prostaglandin E1 (PGE1) to keep the ductus arteriosus open. This allows oxygen-rich and oxygen-poor blood to mix until surgery can be performed.
Will my baby need a balloon atrial septostomy?
If medication alone cannot keep oxygen levels high enough, a cardiologist may perform a balloon atrial septostomy. This procedure uses a small balloon to slightly enlarge a hole between the upper heart chambers to improve blood mixing.
What is the main treatment for D-TGA?
The standard treatment is the Arterial Switch Operation (ASO), typically performed within the first week of life. Surgeons will move the switched arteries to their correct positions and reattach the tiny coronary arteries.
How long will my baby be in the hospital for TGA surgery?
While every baby's recovery is different, most infants with D-TGA will spend roughly 2 to 4 weeks in the hospital, depending on how they heal from the surgery.
What is the long-term outlook for a baby born with TGA?
The survival rate for the Arterial Switch Operation is excellent at high-volume cardiac centers. Most children grow up to lead active, full lives, though they will require lifelong monitoring by a congenital cardiologist.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Is this a case of D-TGA or L-TGA, and how does that specific anatomy change the immediate next steps?
  2. 2.Will our baby need a balloon atrial septostomy soon after birth to help with oxygen levels?
  3. 3.How many Arterial Switch Operations does this hospital perform each year, and what are their success rates?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (17)
  1. 1

    "There's no acknowledgement of what this does to people": A qualitative exploration of mental health among parents of children with critical congenital heart defects.

    Woolf-King SE, Arnold E, Weiss S, Teitel D

    Journal of clinical nursing 2018; (27(13-14)):2785-2794 doi:10.1111/jocn.14275.

    PMID: 29345005
  2. 2

    Outcomes after the Mustard, Senning and arterial switch operation for treatment of transposition of the great arteries in Finland: a nationwide 4-decade perspective.

    Raissadati A, Nieminen H, Sairanen H, Jokinen E

    European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 2017; (52(3)):573-580 doi:10.1093/ejcts/ezx107.

    PMID: 28444256
  3. 3

    Transposition of the Great Arteries-Are We Doing Better? Correlating Outcome to Change in Renal Function Over 2 Decades of Arterial Switch Operation.

    Shostak E, Dagan O, Hosh G, et al.

    Pediatric critical care medicine : a journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies 2020; (21(9)):e782-e788 doi:10.1097/PCC.0000000000002387.

    PMID: 32433443
  4. 4

    Surgical Treatment of Complete Transposition of the Great Arteries in Newborn.

    Wu QY, Li DH, Xue H, et al.

    Chinese medical journal 2016; (129(19)):2381-3 doi:10.4103/0366-6999.190663.

    PMID: 27647199
  5. 5

    Effects of Prostaglandin E1 and Balloon Atrial Septostomy on Cerebral Blood Flow and Oxygenation in Newborns Diagnosed with Transposition of the Great Arteries.

    Cucerea M, Ognean ML, Pinzariu AC, et al.

    Biomedicines 2024; (12(9)) doi:10.3390/biomedicines12092018.

    PMID: 39335532
  6. 6

    Elective Non-Urgent Balloon-Atrial Septostomy in Infants with d-Transposition of the Great Arteries Does Not Eliminate the Need for PGE1 Therapy at the Time of Arterial Switch Operation.

    Zaleski KL, McMullen CL, Staffa SJ, et al.

    Pediatric cardiology 2021; (42(3)):597-605 doi:10.1007/s00246-020-02520-x.

    PMID: 33492430
  7. 7

    How reliably does prenatal echocardiography predict urgent balloon atrial septostomy in fetuses with d-TGA?

    Gezer M, Demirci O, Yücel İK

    Journal of gynecology obstetrics and human reproduction 2024; (53(8)):102813 doi:10.1016/j.jogoh.2024.102813.

    PMID: 38857825
  8. 8

    Management of the Adult with Arterial Switch.

    Breinholt JP, John S

    Methodist DeBakey cardiovascular journal 2019; (15(2)):133-137 doi:10.14797/mdcj-15-2-133.

    PMID: 31384376
  9. 9

    Pathogenesis and Surgical Treatment of Dextro-Transposition of the Great Arteries (D-TGA): Part II.

    Zubrzycki M, Schramm R, Costard-Jäckle A, et al.

    Journal of clinical medicine 2024; (13(16)) doi:10.3390/jcm13164823.

    PMID: 39200964
  10. 10

    Long-term Outcomes of the Arterial Switch Operation for d-Transposition of the Great Arteries.

    Moe TG, Bardo DME

    Progress in cardiovascular diseases 2018; (61(3-4)):360-364 doi:10.1016/j.pcad.2018.08.007.

    PMID: 30227186
  11. 11

    Longer-term experiences of families of children with dextro-transposition of the great arteries: a qualitative study.

    Eagleson KJ, Chin TI, Larmar S, et al.

    Pediatric research 2025; doi:10.1038/s41390-025-04201-y.

    PMID: 40676260
  12. 12

    Cognitive outcomes and health-related quality of life in adults two decades after the arterial switch operation for transposition of the great arteries.

    Kalfa D, Kasmi L, Geronikola N, et al.

    The Journal of thoracic and cardiovascular surgery 2017; (154(3)):1028-1035 doi:10.1016/j.jtcvs.2017.03.119.

    PMID: 28476420
  13. 13

    30 years' experience with the arterial switch operation: risk of pulmonary stenosis and its impact on post-operative prognosis.

    Sobczak-Budlewska K, Łubisz M, Moll M, et al.

    Cardiology in the young 2023; (33(9)):1550-1555 doi:10.1017/S1047951122002670.

    PMID: 36040409
  14. 14

    Parental role alteration strongly influences depressive symptoms in mothers of preoperative infants with congenital heart disease.

    Lisanti AJ, Demianczyk AC, Vaughan K, et al.

    Heart & lung : the journal of critical care 2021; (50(2)):235-241 doi:10.1016/j.hrtlng.2020.12.003.

    PMID: 33340826
  15. 15

    Factors associated with depressive symptoms among 1,502 couples in the immediate puerperium.

    Hernández-Santillán G, Gurpegui M, Alcamí-Pertejo M, et al.

    The International journal of social psychiatry 2025; (71(3)):509-519 doi:10.1177/00207640241296047.

    PMID: 39540405
  16. 16

    Factors associated with posttraumatic stress and anxiety among the parents of babies admitted to neonatal care: a systematic review.

    Malouf R, Harrison S, Pilkington V, et al.

    BMC pregnancy and childbirth 2024; (24(1)):352 doi:10.1186/s12884-024-06383-5.

    PMID: 38724899
  17. 17

    The Impact of Prepartum Depression and Birth Experience on Postpartum Mother-Infant Bonding: A Longitudinal Path Analysis.

    Eitenmüller P, Köhler S, Hirsch O, Christiansen H

    Frontiers in psychiatry 2022; (13()):815822 doi:10.3389/fpsyt.2022.815822.

    PMID: 35706472

This page provides general educational information about Transposition of the Great Arteries (TGA). It does not replace professional medical advice. Always consult your pediatric cardiologist and surgical team for specific guidance regarding your baby's heart condition.

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