Uterine ruptureDownloads

A 37-year-old G4P3 presents to her physician at 20 weeks gestation for routine prenatal care. Currently, she has no complaints; however, in the first trimester she was hospitalized due to acute pyelonephritis and was treated with cefuroxime. All her past pregnancies required cesarean deliveries for medical indications. Her history is also significant for amenorrhea after weight loss at 19 years of age and a cervical polypectomy at 30 years of age. Today, her vital signs are within normal limits and a physical examination is unremarkable. A transabdominal ultrasound shows a normally developing male fetus without morphologic abnormalities, anterior placement of the placenta in the lower uterine segment, loss of the retroplacental hypoechoic zone, and visible lacunae within the myometrium. Which of the following factors present in this patient is a risk factor for the condition she has developed?

A 27-year-old woman, gravida 3, para 2, at 41 weeks' gestation is admitted to the hospital in active labor. Her pregnancy has been uncomplicated. Both of her prior children were delivered by vaginal birth. She has a history of asthma. Current medications include iron and vitamin supplements. After a prolonged labor, she undergoes vaginal delivery. Shortly afterwards, she begins to have heavy vaginal bleeding with clots. Her temperature is 37.2°C (98.9°F), pulse is 90/min, respirations are 17/min, and blood pressure is 130/72 mm Hg. Examination shows a soft, enlarged, and boggy uterus on palpation. Laboratory studies show: Hemoglobin 10.8 g/dL Hematocrit 32.3% Leukocyte Count 9,000/mm3 Platelet Count 140,000/mm3 Prothrombin time 14 seconds Partial thromboplastin time 38 seconds Her bleeding continues despite bimanual uterine massage and administration of oxytocin. Which of the following is the most appropriate next step in management?