We hypothesize that EpiFaith® syringe, in comparison with conventional glass syringe, will result in a similar overall success rate for catheter placement, but with a larger reduction in change of elapsed time for identification of epidural space and catheter placement of each practitioner. Moreover, we hypothesize that the cumulative learning summary curve using EpiFaith® syringe will be higher than conventional glass syringe in resident trainees, which will show the possible value of EpiFaith® syringe for teaching and learning obstetric epidural anesthesia.
