Лучшие больницы для «Coarctation of the Aorta (CoA)» в Дубай, ОАЭ

Coarctation of the Aorta is a congenital cardiovascular anomaly characterized by a discrete or long-segment narrowing (stenosis) of the aorta, most commonly occurring at or just distal to the ductus arteriosus in the juxtaductal region. This obstruction creates a pressure differential across the stenosis: the left ventricle must generate supraphysiologic systolic pressures to perfuse the upper body, while the lower extremities receive diminished, often delayed, perfusion. The resultant chronic left ventricular pressure overload leads to concentric hypertrophy, diastolic dysfunction, and — if left uncorrected — progressive heart failure, aortic wall disease, and a dramatically shortened life expectancy (median survival without repair: 35 years). Approximately 6–8% of all congenital heart defects are attributable to CoA, with a male-to-female ratio of approximately 2:1, and a well-established association with bicuspid aortic valve (occurring in up to 85% of CoA patients), ventricular septal defect, and Turner syndrome.

• ELIGIBLE PATIENTS:
• Neonates and infants presenting with critical CoA and hemodynamic compromise (ductal-dependent circulation), requiring urgent surgical repair
• Children and adults with native CoA and a resting peak-to-peak systolic gradient ≥20 mmHg at cardiac catheterization, or <20 mmHg with imaging evidence of significant collateral formation or left ventricular hypertrophy
• Patients with recurrent CoA (re-coarctation) following prior surgical repair — typically managed with transcatheter balloon angioplasty and covered Cheatham-Platinum (CP) stent implantation
• Adults with undiagnosed CoA presenting with refractory upper extremity hypertension, headache, epistaxis, or aortic dissection
• +17 more

Surgical Repair OPTIONS:

1. Resection with Extended End-to-End Anastomosis (EEEA): The preferred surgical technique for neonates and infants. The coarctation segment is completely excised and the aorta is spatulated proximally and distally to create a tension-free, wide-caliber anastomosis. This technique eliminates the abnormal ductal tissue (which contributes to re-coarctation risk) and achieves excellent long-term patency. Performed via left posterolateral thoracotomy without cardiopulmonary bypass (CPB) in most cases, using partial aortic clamping. Contemporary series report re-coarctation rates of 5–10% in neonates and <5% in older children with EEEA.

2. Patch Aortoplasty (Subclavian Flap and Synthetic Patch): Historically used for long-segment coarctations, subclavian flap aortoplasty mobilizes the left subclavian artery as a vascularized patch to augment the narrowed segment. Largely superseded in modern practice due to aneurysm formation risk with synthetic Dacron patches and left arm growth concerns with subclavian flap. Reserved for selected complex re-do cases.

3. Interposition Graft Repair: Used in adults with calcified, inoperable native coarctations or complex reoperations. A woven Dacron or Gore-Tex conduit is interposed between the proximal and distal aortic segments, bypassing the obstructed region. Extra-anatomic bypass (ascending-to-descending aorta bypass via median sternotomy and CPB) is employed in patients with heavily calcified or hostile mediastinal anatomy.

PHASE 1 — PRE-ARRIVAL & VIRTUAL CONSULTATION (2–4 weeks before travel):

• Patient submits medical records, echocardiography reports, CT angiography images, and prior operative notes (if re-operation) to GAF Healthcare's clinical coordination team
• Senior congenital cardiologist and cardiovascular surgeon at the partner center conduct a virtual teleconsultation to review anatomy, classify CoA (discrete vs. long-segment, native vs. re-coarctation), and recommend the optimal repair strategy
• GAF Healthcare initiates e-Medical Visa application (India) or coordinates entry visa/medical visa (UAE) on the patient's behalf
• Pre-travel checklist issued: anticoagulation bridging instructions (if applicable), antibiotic prophylaxis protocol, dietary instructions, and medication reconciliation

PHASE 2 — ARRIVAL & PRE-OPERATIVE WORKUP (Days 1–3):