Лучшие больницы для «Balloon Pulmonary Valvuloplasty» в Дубай, ОАЭ

Pulmonary valve stenosis (PVS) is a structural cardiac defect characterized by the pathological narrowing of the pulmonary valve orifice, which impedes the ejection of deoxygenated blood from the right ventricle (RV) into the pulmonary artery. In a healthy heart, the tricuspid pulmonary valve opens freely during systole; in PVS, fused or dysplastic leaflets create a fixed obstruction that forces the RV to generate abnormally elevated pressures to maintain adequate cardiac output. Over time, sustained pressure overload leads to progressive right ventricular hypertrophy (RVH), diastolic dysfunction, tricuspid regurgitation, and—in severe cases—right heart failure, paradoxical emboli through a patent foramen ovale, and systemic desaturation. The condition is most commonly congenital but can also arise as a sequela of rheumatic heart disease or carcinoid syndrome.

• ELIGIBLE PATIENTS:
• Congenital pulmonary valve stenosis with a peak Doppler gradient ≥ 40 mmHg on TTE (ACC/AHA Class I indication)
• Symptomatic patients (exertional dyspnea, syncope, chest pain, reduced exercise tolerance) at any gradient above 30 mmHg
• Asymptomatic patients with a peak gradient ≥ 50 mmHg or evidence of progressive right ventricular hypertrophy on CMR or ECG
• Pediatric patients (including neonates with critical pulmonary stenosis) and adults up to any age with suitable valve morphology
• +19 more

STANDARD BALLOON PULMONARY VALVULOPLASTY (PRIMARY APPROACH): The conventional technique uses a single Inoue-style or dedicated pulmonary valvuloplasty balloon catheter (Tyshak II or Z-Med series). Under biplane fluoroscopic guidance, venous access is secured via the femoral vein using a 7–9 French sheath. A multipurpose or right Judkins catheter is advanced through the right atrium, across the tricuspid valve, through the RV, and positioned across the pulmonic valve into the distal pulmonary artery. A stiff exchange-length guidewire (e.g., Amplatz Super Stiff) is parked in the left pulmonary artery. The valvuloplasty balloon—sized to a balloon-to-annulus ratio (BAR) of 1.2–1.4:1, the critical determinant of efficacy and complication risk—is advanced over the wire, centered across the stenotic valve, and inflated rapidly to obliterate the fluoroscopic waist created by the obstructing leaflets. The balloon is then rapidly deflated and withdrawn. Immediate post-dilation hemodynamics and echocardiography confirm the residual gradient. A successful result is defined as a post-procedural peak gradient below 25–30 mmHg or a reduction of ≥ 50% from baseline.

DOUBLE-BALLOON TECHNIQUE: For large pulmonary annuli (typically > 20–22 mm in adults and older adolescents), the single-balloon approach may be limited by available balloon diameters. The double-balloon technique employs two balloons advanced simultaneously via bilateral femoral venous access, with their combined effective diameter calculated using the Yeager formula to achieve the optimal BAR. This approach allows treatment of annuli up to 30 mm and is associated with superior gradient reduction and lower residual stenosis compared to single-balloon dilation in large adults.

CUTTING BALLOON AND HIGH-PRESSURE BALLOON FOR RESTENOSIS: In patients presenting with restenosis following prior BPV or surgical valvotomy—where leaflet fibrosis and calcification reduce compliance—standard low-pressure balloons may be insufficient. Cutting balloons (Flextome, Boston Scientific) carry 3–4 atherotomes that score the resistant leaflet tissue, enabling effective commissurotomy at lower inflation pressures with reduced risk of annular trauma. High-pressure non-compliant balloons (up to 18–22 atm) are an alternative in calcified valves.

PULMONARY VALVE STENTING (TRANSCATHETER PULMONARY VALVE IMPLANTATION / TPVI): In patients with dysplastic pulmonary valves unsuitable for BPV alone, severe post-BPV pulmonary regurgitation causing hemodynamic compromise, or conduit-related RVOT obstruction (e.g., following tetralogy of Fallot repair), Transcatheter Pulmonary Valve Implantation (TPVI) using the Melody valve (Medtronic) or the SAPIEN XT/3 valve (Edwards Lifesciences) is the advanced catheter-based alternative to surgical pulmonary valve replacement. This procedure is performed in specialized hybrid cath-lab/OR suites available at premier cardiac centers in India and the UAE.

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

• Patient submits medical records (echocardiography reports, CMR, prior cath data, ECG, blood work) to GAF Healthcare's clinical team via the secure online portal.
• A GAF-affiliated senior interventional cardiologist reviews the case and issues a formal treatment opinion within 48–72 hours, including procedure recommendation, balloon sizing estimation, and risk stratification.
• GAF coordinates e-Medical Visa (India) or UAE entry visa processing; travel and accommodation booking is initiated for patient and one attendant.

PHASE 2 — ARRIVAL & PRE-PROCEDURAL ASSESSMENT (Day 1–2):