7 concepts o Prolonged latent phase: 16 hr prolonged active phase: 8 hr Arrest active phase: Ocm/2hr prolonged second-stage labor: 2hr/ihr Arrest second-stage labor: Ocm/ihr delayed descent: <1cm/hr Arrest descent: >=0cm/hr7 concepts Prolonged latent phase:16 hr prolonged active phase:8 hr arrest active phase:0cm/2hr prolonged second-stage labor:2hr/1hr arrest second-stage labor:0cm/1hr delayed descent:<1cm/hr arrest descent:>=0cm/hr