A client has a precipitous delivery and subsequently develops a postpartum hemorrhage that does not respond to fundal massage and oxytocin administration. What is the nurse's next action?

Administer methylergonovine (Methergine) 0.2 mg oral if her hematocrit level is over 45%.

Administer methylergonovine (Methergine) 0.2 mg intramuscular if her urine output is less than 50 mL/h.

Administer methylergonovine (Methergine) 0.2 mg intravenous push slowly over greater than 1 minute as long as her blood pressure is below 140/90.

Administer methylergonovine (Methergine) 0.2 mg subcutaneous if her fundus measures +1 above umbilicus.