Inclusion Criteria:  ASA Physical Status Classification II and III parturients Requested and received a labour epidural Capable of consenting to the study Have no language barrier which may obfuscate the sensory block assessment Are receiving programmed intermittent epidural boluses (PIEB) for maintenance analgesia, which is the Mount Sinai Hospital default maintenance regimen  Exclusion Criteria:  Medical comorbidities that could compromise the body's sensitivity to cold, pinprick, or touch Epidurals performed under a combined spinal-epidural (CSE) or dural puncture epidural (DPE) technique Epidurals with a documented unintentional dural puncture Inadequate epidural analgesia requiring either manually administered epidural boluses, an increase in the concentration of their maintenance local anesthetic, or a repeat of their epidural