Clinical Presentation & Protocol
Patient Usually Complains Of
Patient presents with progressive exertional dyspnea, fatigue, and cyanosis secondary to long-standing systemic-to-pulmonary shunt. History significant for unrepaired congenital heart defect (e.g., VSD, ASD, or PDA) now complicated by irreversible pulmonary vascular obstructive disease and bidirectional or reversed shunt. Reports symptoms of chronic hypoxemia, including exercise intolerance, exertional syncope, and occasional hemoptysis. No recent change in baseline functional status (NYHA Class [I/II/III/IV]).
Clinical Examination Findings
General: Patient appears chronically ill, resting in [supine/semi-fowler] position. Cyanosis noted in [lips/nail beds/mucosa]. Clubbing of digits present. Vitals: O2 saturation [XX]% on room air. Cardiovascular: Precordial heave present. S1 normal, S2 loud and single (P2 component). Grade [I-VI]/VI systolic murmur at left sternal border. No peripheral edema. Lungs: Clear to auscultation bilaterally. Extremities: Peripheral cyanosis with capillary refill >3 seconds.
Treatment Protocol
Management plan: Focus on symptom management and prevention of complications. 1. Avoidance of strenuous physical activity and high-altitude exposure. 2. Pharmacotherapy: Initiate pulmonary vasodilator therapy (e.g., PDE-5 inhibitors like Sildenafil or Endothelin receptor antagonists like Bosentan) as indicated. 3. Hematologic: Monitor for hyperviscosity; consider therapeutic phlebotomy only if symptomatic with hematocrit >65%. 4. Prophylaxis: Strict adherence to endocarditis prophylaxis for dental/surgical procedures. 5. Follow-up: Serial echocardiography and 6-minute walk test.