Dexmedetomidine target-controlled infusion (TCI) and ketamine analgosedation in geriatric patients undergoing vertebroplasties: pharmacodynamic considerations. - Channabasappa, Shivakumar Mallappanahalli; Singh, Guriqbal; Chokhsi, Tushar; Bajwa, Sukhminder J. S. (Indian Journal of Anaesthesia, 2026)