“OUTCOME OF PREOPERATIVE SILDENAFIL USE IN PATIENTS UNDERGOING MVR WITH SEVERE PULMONARY ARTERY HYPERTENSION”, RMSR, vol. 3, no. 3, pp. 10–17, Mar. 2025, Accessed: Apr. 02, 2025. [Online]. Available: http://thermsr.com/index.php/Journal/article/view/696