A 26-year-old woman comes to the emergency department because of a 3-day history of nausea and vomiting. Her last menstrual period was 9 weeks ago. A urine pregnancy test is positive. Ultrasonography shows an intrauterine pregnancy consistent in size with a 7-week gestation. The hormone that was measured in this patient's urine to detect the pregnancy is also directly responsible for which of the following processes?
ADevelopment of breast tissue
BPreparation of the uterine endometrium for implantation
CInhibition of preterm uterine contractions
DMaintenance of the corpus luteum
EInhibition of ovulation
A 19-year-old woman comes to the physician because of a delayed menstrual period. She has had regular menses since menarche at age 11. Her last menstrual period was 7 weeks ago. She is sexually active with two male partners. A urine pregnancy test is positive. An ultrasound of the pelvis shows a viable intrauterine pregnancy with an estimated gestational age of 6 weeks and 5 days. She does not wish to continue with the pregnancy. After carefully weighing the options with her physician, she is prescribed two medications, one of which is mifepristone. Which of the following is this drug's primary mechanism of action?
AActivation of prostaglandin E1 receptors
BInhibition of dihydrofolate reductase
CBlockage of progesterone receptor
DAgonist at oxytocin receptors
EAntagonist at gonadotropin-releasing hormone receptors
A 39-year-old woman, gravida 5, para 4, at 41 weeks' gestation is brought to the hospital because of regular uterine contractions that started 2 hours ago. Pregnancy has been complicated by iron deficiency anemia treated with iron supplements. Pelvic examination shows the cervix is 90% effaced and 7-cm dilated; the vertex is at -1 station. Fetal heart tracing is shown. The patient is repositioned, O2 therapy is initiated, and amnioinfusion is done. A repeat assessment after 20 minutes shows a similar cervical status, and no changes in the fetal heart tracing, and less than 5 contractions in a period of 10 minutes.What is the most appropriate next step in management?
AEmergent cesarean delivery
BMonitor without intervention
CBegin active pushing
DRetry maternal repositioning
EAdminister tocolytics
+ 7 more in the PDF
Browse all chapters