Navigating High-Risk Obstetric Anesthesia: Successful Management of Cesarean Section with Graded Epidural Blockade in a Parturient with Atrial Septal Defect and Moderate Pulmonary Hypertension. JACR [Internet]. 2025 Aug. 27 [cited 2026 Aug. 14];6(2):948-62. Available from: https://hmpublisher.com/index.php/JACR/article/view/796