Fassbender P, et al. - The impacts of propofol/remifentanil or sevoflurane/remifentanil based anesthesia on nocturnal apnea-hypopnea-index (AHI) and oxygen saturation (SpO₂) were assessed in patients with established or strongly suspected obstructive sleep apnea (OSA). When given in combination with the short acting opioid remifentanil, neither the volatile agent sevoflurane nor the intravenous anesthetic propofol altered nocturnal AHI or oxygen saturation in a cohort of patients with suspected or confirmed OSA undergoing surgery of moderate duration and severity.