Surgical Repair: Moving the Heart's Plumbing into Place

The surgical repair of Transposition of the Great Arteries (TGA) is one of the greatest success stories in modern pediatric heart surgery. In the past, surgeries only redirected blood flow (the Mustard or Senning procedures), leaving the heart’s “wrong” pump to do all the work ^[1]. Today, surgeons perform anatomical repairs that put everything in its proper place, leading to excellent long-term survival and quality of life ^[2][3].

The Gold Standard: The Arterial Switch Operation (ASO)

For the majority of babies with D-TGA, the Arterial Switch Operation (ASO) is the standard of care ^[4]. During this surgery:

1. Switching the Pipes: The surgeon cuts the aorta and pulmonary artery and swaps them to their correct chambers ^[2].
2. Moving the Fuel Lines: This is the most delicate part. The tiny coronary arteries (which supply blood to the heart muscle itself) are carefully moved from the old aortic root to the new one ^[5].
3. The Lecompte Maneuver: The surgeon pulls the pulmonary artery in front of the aorta to ensure both fit comfortably in the chest ^[6].

This surgery allows the strong left ventricle to take over its intended job of pumping blood to the whole body, which is why it has much better long-term outcomes than older methods ^[2][7].

The Immediate Recovery: What You Will See

When you first see your baby after surgery, it can be extremely shocking. The reality of the immediate post-operative period is intense:

• Ventilator and Breathing Tube: Your baby will still have a tube in their airway and a machine breathing for them.
• Swelling: They will likely look very swollen or “puffy” from extra fluids and the heart-lung bypass machine.
• Chest Tubes and Pacing Wires: You will see plastic tubes coming from their chest to drain fluid, as well as thin, temporary pacing wires attached to their skin in case their heart rhythm needs help.
• Sedation: They will be kept heavily sedated and asleep to allow their body to rest.

All of this is a normal part of the immediate recovery. Over the next several days, the team will slowly wake your baby up, remove the breathing tube, and take out the extra lines as they get stronger ^[4].

Complex TGA: Rastelli and Nikaidoh Procedures

If a baby has D-TGA along with other defects like a large hole in the heart (Ventricular Septal Defect or VSD) and a narrowing of the path to the lungs (Pulmonary Stenosis), a standard ASO may not be possible ^[2].

• Rastelli Procedure: The surgeon uses a patch to create a tunnel inside the heart, directing oxygen-rich blood from the left ventricle to the aorta. They then use an external tube (conduit) to connect the right ventricle to the lungs ^[2].
• Nikaidoh Procedure: This is a newer, more complex “aortic translocation.” The surgeon actually moves the entire aortic root to a new position. This can sometimes offer a better “fit” for the heart’s plumbing than the Rastelli, though it is technically more difficult ^[8][9].

Repairing L-TGA: The Double Switch

Because L-TGA (congenitally corrected TGA) is a “double swap,” the surgery is also a double fix ^[10]. The Double Switch Operation combines an atrial switch (moving the blood flow in the upper chambers) with an arterial switch (moving the big pipes) ^[11].

The goal of the Double Switch is to make the left ventricle the main pump for the body, which prevents the right ventricle from wearing out over time ^[12][13].