ASPAN standards for staffing ratios state that “[t]wo registered nurses, one of whom is an RN [registered nurse] competent in Phase I postanesthesia nursing, are in the same unit where the patient is receiving Phase I level of care” (ASPAN, 2015, p. 35). The standards also differentiate between which patients should receive 1:1 and 2:1 nurse-to-patient ratios. ASPAN staffing guidelines were developed in consideration of evidenced-based research, professional opinion, and consensus.