Comparing Pharmacodynamics of Sevoflurane and Propofol,   A four-period randomized sequence crossover study determined the concentration-effect relationships for both propofol and sevoflurane, both with and without remifentanil coadministration, with effects measured as tolerance to standard stimuli and by the Patient State Index. The sevoflurane Patient State Index values associated with a 50% probability of tolerance to the standard stimuli were higher for than those for propofol. Adding a 2 ng · ml −1 predicted effect-site remifentanil concentration increased al Patient State Index values associated with a 50% probability of tolerance to the standard stimuli, but 4 ng · ml −1 produced additional effects only during propofol administration.
	FREE Peripheral Nerve Blocks and Shoulder Surgery Peripheral nerve blocks are associated with a decrease in unplanned admissions after ambulatory shoulder surgery. There is no associated improvement in other postoperative outcomes such as emergency department visits, readmissions, mortality, or costs.