Skip to content
How It Works
Explore
Ask a Question Resources Pricing
Who It's For
Patients
Decode results, prep for appointments, weigh options.
Caregivers & advocates
Carry the research load for someone you love.
Providers & clinicians
Resources for patients in your practice.
Log In Ask a Question
PubMed This is a summary of 15 peer-reviewed journal articles Updated
Pediatric Cardiology · Dextro-Transposition of the Great Arteries

What Are the Symptoms of D-TGA in Newborns?

At a Glance

The most common postnatal signs of D-TGA in newborns include blue or purplish skin (cyanosis), rapid breathing, a fast heart rate, and difficulty feeding. These life-threatening symptoms occur because swapped heart arteries prevent oxygen-rich blood from reaching the baby's body.

In this answer

2 sections

01

Why These Symptoms Are an Immediate Emergency

02

What Doctors Will Do

If dextro-transposition of the great arteries (D-TGA) is not caught on a prenatal ultrasound, the most immediate and noticeable sign after birth is a blue or purplish coloring of the skin, lips, and tongue, known as cyanosis [1]. Along with this blue coloring, a newborn with D-TGA will often show rapid breathing (tachypnea), a fast heart rate (tachycardia), and have a very hard time feeding [1][2]. These symptoms appear because the baby’s body is not getting the oxygen it needs to survive [3].

Why These Symptoms Are an Immediate Emergency

In a heart with D-TGA, the two main arteries leaving the heart are switched [4]. Because of this “swapped” plumbing, oxygen-rich blood from the lungs simply circles back to the lungs, while oxygen-poor blood from the body is pumped right back out to the body without picking up new oxygen [5].

For a baby to survive this, they rely on natural openings in their heart and blood vessels that are present in all babies before birth:

  • Foramen ovale: A small hole between the upper chambers of the heart.
  • Ductus arteriosus: A blood vessel connecting the two main arteries.

These openings act as temporary shunts, allowing the oxygen-rich and oxygen-poor blood to mix so the baby’s body gets some oxygen. However, these natural holes are programmed to close on their own shortly after birth, usually within the first few hours or days [6]. As they close, the blood mixing stops, oxygen levels drop dangerously low, and acid begins to build up in the blood, a condition called metabolic acidosis [7][8]. This is a life-threatening emergency [2]. (Note: Some babies with D-TGA also have a hole between the lower chambers, called a Ventricular Septal Defect, which naturally allows more blood mixing and can slightly alter how quickly these severe symptoms appear.)

What Doctors Will Do

When a baby shows these signs or fails a routine newborn oxygen screening—known as the Critical Congenital Heart Disease (CCHD) screen—the medical team will act quickly to stabilize the infant’s oxygen levels and protect their brain [9].

Immediate interventions include:

  • Prostaglandin E1 (PGE1): An intravenous medication given continuously to keep the ductus arteriosus from closing [10][11]. Note: A common side effect of PGE1 is pauses in breathing (apnea). Because of this, it is very common for babies on this medication to need a temporary breathing tube and ventilator to keep them safe.
  • Balloon Atrial Septostomy (BAS): If medication alone does not allow enough blood mixing, or if the foramen ovale is too small, a pediatric cardiologist may perform this bedside procedure [12]. They will use a tiny balloon to enlarge the natural hole between the upper chambers of the heart, ensuring enough oxygen reaches the brain and body [13].

These immediate steps are life-saving bridges. They keep your baby safe and stable until a surgeon can perform the definitive open-heart surgery, known as the arterial switch operation, to correct the heart’s anatomy [14]. This surgery is usually performed within the first week or two of life, and babies managed with this operation in the neonatal period generally have excellent long-term survival and outcomes [14][15].

Common questions in this guide

What is the most noticeable sign of D-TGA in a newborn?
The most immediate and noticeable sign is cyanosis, which appears as a blue or purplish coloring of the skin, lips, and tongue. This discoloration happens because the baby's body is not receiving enough oxygen-rich blood from the heart.
Why do newborns with D-TGA breathe so quickly?
Rapid breathing, or tachypnea, happens because the baby's body is struggling to get the oxygen it needs to survive. The swapped arteries in the heart prevent oxygenated blood from circulating properly, causing the baby to breathe faster to compensate.
What is the purpose of the Critical Congenital Heart Disease (CCHD) screening?
The screening uses a pulse oximeter to quickly and painlessly measure a newborn's oxygen levels. Failing this routine test is often one of the first indicators that a baby might have a critical heart condition like D-TGA that requires immediate care.
What emergency treatments are given for D-TGA right after birth?
Doctors typically use an intravenous medication called Prostaglandin E1 (PGE1) to keep the natural blood vessel openings in the heart open. If medication is not enough, a cardiologist may perform a bedside procedure called a balloon atrial septostomy to ensure enough oxygen reaches the brain.
How is D-TGA permanently fixed?
D-TGA is permanently fixed using an open-heart surgery called the arterial switch operation. During this procedure, the surgeon properly reconnects the heart's arteries. This life-saving surgery is usually performed within the first two weeks of life.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.How will your team distinguish between normal 'newborn blue' in my baby's hands and feet and the central cyanosis that could indicate D-TGA?
  2. 2.When exactly will you perform the Critical Congenital Heart Disease (CCHD) pulse oximetry screening on my baby after birth?
  3. 3.If my baby is given Prostaglandin E1 (PGE1) and experiences breathing pauses, how will the care team manage their airway?
  4. 4.What criteria do you use to decide if my baby needs an emergency balloon atrial septostomy, and is someone on-site trained to perform it?
  5. 5.If my baby needs an emergency transfer to a specialized children's hospital, what is the exact transport protocol?

Questions For You

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

Related questions

Can Children with Repaired D-TGA Play Competitive Sports?Can You Breastfeed After an Arterial Switch Operation?Can I Have a Vaginal Delivery With Fetal D-TGA?How Coronary Variations Affect Arterial Switch SurgeryHow Does a VSD Affect the Arterial Switch Operation?Is D-TGA Genetic? Recurrence Risk for Future PregnanciesHow Does ASO Surgery Affect Brain Development?What is a Balloon Atrial Septostomy (Rashkind Procedure)?What is the Difference Between D-TGA and L-TGA?Will My Baby Have a Mustard or Senning Procedure?What Is the I-Sign on a Fetal Ultrasound for D-TGA?What is the Risk of Surgery After an Arterial Switch?Why Do Babies on Prostaglandin E1 Need Intubation?Why is Early Arterial Switch Surgery Critical for D-TGA?

References

References (15)
  1. 1

    Fetal-to-Neonatal Transition of an Infant with Transposition of the Great Arteries and Intact Ventricular Septum: A Case Report.

    Weeda JA, Te Pas AB, Haak MC, et al.

    Biomedicine hub 2025; (10(1)):1-7 doi:10.1159/000542723.

    PMID: 39722663
  2. 2

    Effects of preoperative veno-venous extracorporeal membrane oxygenation management and left atrial pressure reduction via balloon atrial septostomy on respiratory system compliance in a neonate with transposition of the great arteries with intact ventricular septum.

    Nishida K, Seino Y, Takeuchi M

    Respiratory medicine case reports 2025; (54()):102190 doi:10.1016/j.rmcr.2025.102190.

    PMID: 40161468
  3. 3

    Pathological diagnosis of transposition of the great arteries as a contributor to neonatal mortality.

    E X, Yang C, Pei B, Yu T

    Journal of cardiothoracic surgery 2025; (20(1)):462 doi:10.1186/s13019-025-03714-1.

    PMID: 41339874
  4. 4

    Implantation of a leadless pacemaker in a patient after Senning procedure - a case report.

    Kowalska W, Patej EJ, Jagosz M, et al.

    Anatolian journal of cardiology 2021; (25(4)):278-279 doi:10.14744/AnatolJCardiol.2020.36453.

    PMID: 33830052
  5. 5

    Human Genetics of d-Transposition of Great Arteries.

    Houyel L

    Advances in experimental medicine and biology 2024; (1441()):671-681 doi:10.1007/978-3-031-44087-8_39.

    PMID: 38884741
  6. 6

    Electrical cardiometry in monitoring percutaneous closure of ductus arteriosus in preterm infants: a case study on five patients.

    Gatelli IF, Vitelli O, De Rienzo F, et al.

    European journal of pediatrics 2022; (181(6)):2319-2328 doi:10.1007/s00431-022-04426-7.

    PMID: 35243543
  7. 7

    Transcatheter PDA recanalization and interatrial septal stenting as a bridge to arterial switch operation in a late-presenting infant with D-transposition of the great arteries.

    Satrio R, Wulandari P, Ardining H, et al.

    The Egyptian heart journal : (EHJ) : official bulletin of the Egyptian Society of Cardiology 2025; (77(1)):66 doi:10.1186/s43044-025-00662-y.

    PMID: 40569500
  8. 8

    Prenatal Detection of D-TGA and Novel Interventional Program Decrease Time to Balloon Septostomy.

    Mattia D, Coronado C, Garn B, et al.

    Pediatric cardiology 2025; (46(7)):2054-2059 doi:10.1007/s00246-024-03679-3.

    PMID: 39384586
  9. 9

    D-Transposition of the great arteries with restrictive foramen ovale in the fetus: the dilemma of predicting the need for postnatal urgent balloon atrial septostomy.

    Gottschalk I, Walter A, Menzel T, et al.

    Archives of gynecology and obstetrics 2024; (309(4)):1353-1367 doi:10.1007/s00404-023-06997-8.

    PMID: 36971845
  10. 10

    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
  11. 11

    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
  12. 12

    Different outcomes of balloon atrial septostomy and the association of C677T polymorphism in MTHFR gene on TGA children.

    Salih AF, NazdarAmin BM

    Cellular and molecular biology (Noisy-le-Grand, France) 2022; (67(4)):24-32.

    PMID: 35809305
  13. 13

    Balloon Atrial Septostomy in a Premature Infant.

    Choi C, Johnston T, Rubio A, Morray B

    JACC. Case reports 2023; (26()):102068 doi:10.1016/j.jaccas.2023.102068.

    PMID: 38094167
  14. 14

    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
  15. 15

    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

This page explains the signs and emergency treatments of D-TGA in newborns for educational purposes only. If your baby exhibits any signs of a heart defect, such as blue skin or rapid breathing, seek emergency medical care immediately.

Get notified when new evidence is published on Congenitally uncorrected transposition of the great arteries.

We monitor PubMed for new peer-reviewed studies on this topic and email a short summary when something meaningful changes.