<prompt> Arrest disorder is defined as the cessation of cervical dilatation in active phase of labor of more than:1 hour1.2 hours1.5 hours2 hours  <response>: Ans. D. 2 hours Secondary arrest is defined when the active phase of labor cervical dilatation commences normally but stops or slows significantly for 2 hours or more prior to the full dilatation of the cervix. It is commonly due to malposition or cephalopelvic disproportion.Cessation of active phase of dilatation by more than 2 hours is defined as arrest Danforth. 