Omar, Heba, Ahmed Moamen, Bassant Abdelhamid, Ashraf Rady, and Inas Farouk. “Accuracy of Preoperative Evaluation of Inferior Vena Cava Collapsibility Index and Caval Aorta Index for Prediction of Hypotension After Induction of General Anesthesia: A Prospective Observational Study”. Anaesthesia, Pain & Intensive Care 27, no. 4 (July 6, 2023): 449-455. Accessed July 2, 2024. https://apicareonline.com/index.php/APIC/article/view/2255.