Effect of Preoperative Oral Beta Blocker Versus Intraoperative I/V Beta Blocker in Hypotension Anesthesia Under G/A in Elective Surgery — A Comparative Study. The Planet, [S. l.], v. 8, n. 01, p. 17–22, 2024. Disponível em: https://bdjournals.org/index.php/planet/article/view/609. Acesso em: 2 may. 2025.