Best Hospitals for Tetralogy of Fallot (TOF) in Dubai, UAE

Tetralogy of Fallot is the most common cyanotic congenital heart disease, accounting for approximately 7–10% of all congenital cardiac defects and affecting roughly 1 in every 2,500 live births. The pathology is defined by four co-existing anatomical abnormalities: (1) a large, malaligned ventricular septal defect (VSD) that allows deoxygenated blood to mix with oxygenated blood; (2) infundibular and/or valvular pulmonary stenosis creating right ventricular outflow tract (RVOT) obstruction; (3) an overriding aorta positioned directly above the VSD, receiving blood from both ventricles; and (4) right ventricular hypertrophy (RVH) secondary to the pressure overload imposed by the obstructed outflow. The net physiological consequence is chronic arterial hypoxemia, failure to thrive, episodic hypercyanotic 'Tet spells,' and, if left uncorrected, progressive polycythemia, paradoxical embolism, and premature death. Risk stratification tools including the Aristotle Basic Complexity (ABC) Score and the Society of Thoracic Surgeons–European Association for Cardio-Thoracic Surgery (STS-EACTS) Congenital Heart Surgery Mortality Score are routinely used to classify operative risk and guide surgical planning.

• ELIGIBLE PATIENTS — PEDIATRIC:
• Neonates and infants (3–12 months) with confirmed TOF on echocardiography, presenting with cyanosis (SpO2 < 85%), failure to thrive, or recurrent hypercyanotic spells
• Children aged 1–10 years with unrepaired or incompletely palliated TOF (post-BTT shunt or RV-PA conduit) deemed ready for complete intracardiac repair
• Patients with TOF variants including TOF with pulmonary atresia (TOF/PA), TOF with absent pulmonary valve syndrome (TOF/APV), and TOF with atrioventricular septal defect (TOF/AVSD)
• ELIGIBLE PATIENTS — ADOLESCENT/ADULT (ACHD):
• +19 more

TOF repair encompasses a spectrum of interventions ranging from palliative neonatal procedures to definitive intracardiac repair and, subsequently, late reintervention for residual or recurrent lesions.

1. PALLIATIVE PROCEDURES (Bridge to Complete Repair):

• Modified Blalock–Taussig–Thomas (mBTT) Shunt: A 3.5–4 mm Gore-Tex interposition graft connecting the subclavian artery to the ipsilateral pulmonary artery, performed in critically cyanotic neonates (<3 kg) unfit for primary repair. Improves pulmonary blood flow and allows somatic growth before definitive surgery.
• Central Aortopulmonary Shunt: Used when subclavian anatomy is unfavorable.
• RV-to-PA Conduit (Sano modification): Preferred in TOF/PA to provide forward pulsatile pulmonary flow.
• Pulmonary Balloon Valvuloplasty: Occasionally used as palliation in selected cases with predominantly valvular obstruction.

2. COMPLETE INTRACARDIAC REPAIR (DEFINITIVE — PRIMARY TREATMENT):

PHASE 1 — PRE-OPERATIVE EVALUATION (Days 1–5 in country):

• Day 1: GAF Healthcare coordinator receives the patient's medical records remotely and arranges an initial teleconsultation with the designated pediatric cardiac surgeon and congenital cardiologist at the chosen partner hospital.
• Days 1–2 (on arrival): Airport reception, hotel or hospital guest house check-in for the patient's family. The patient is admitted to the pediatric cardiac assessment unit.
• Days 2–5: Complete diagnostic workup performed in-hospital — transthoracic echocardiography (TTE), cardiac MRI (CMR), CTA of the pulmonary arteries, cardiac catheterization if indicated, 22q11.2 FISH, complete metabolic panel, coagulation profile, blood typing, and crossmatch. Pre-anesthetic evaluation, pediatric anesthesiology consultation, and ICU team briefing.
• Day 4–5: Multidisciplinary team (MDT) meeting between cardiac surgery, congenital cardiology, cardiac anesthesia, perfusion, and cardiac nursing. Surgical plan finalized, informed consent obtained in the patient's language (GAF-provided interpreter present).
• Baseline weight optimization: Malnourished infants may require 1–2 weeks of pre-operative nasogastric feeding or NG supplementation prior to elective surgery. If urgent, surgery proceeds without delay.

PHASE 2 — THE SURGICAL PROCEDURE (Day 6 approximately):