A client has a boggy uterus during stage IV of her delivery. Four hours postpartum, the nurse is preparing to administer methylergonovine maleate (Methergine) 0.2mg PO as prescribed every 6 hours. The client’s vital signs are; temperature, 100.4°F (38℃); pulse, 60 beats/minute; respirations, 14 breaths/minute; blood pressure, 140/90mmHg. Which is the most appropriate intervention