Hemodynamic-Protective Anesthesia for Emergency Rigid Esophagoscopy in an Adult with Uncorrected Pulmonary Atresia with Ventricular Septal Defect, Aortopulmonary Collaterals, and Pneumonia: A Case Study. JACR. 2026;7(2):200-209. doi:10.37275/jacr.v7i2.971