Incidence of Hypotension between Intrathecal Hyperbaric Bupivacaine with and without Fentanyl in Geriatric Patients Undergoing Urological Surgeries Journal title: Journal of Health Science and Medical Research (JHSMR) Authors: Thavat Chanchayanon, Mareeya Chearong, Piyaporn Vasinanukorn, Natsana Withayanuphakorn, Tidarat Sang... Subject(s): Medical science, Health science