To compare the anaesthetic effectiveness and safety of ropivacaine 0.75% with bupivacaine 0.5% for spinal anaesthesia in patients having lower limb orthopedic surgery. Continental Medical and Health Horizons, [S. l.], v. 1, n. 1, p. 25–30, 2025. Disponível em: https://umedpress.com/index.php/CMHH/article/view/25. Acesso em: 2 nov. 2026.