Ectopic Pregnancy

A 32-year-old woman with a history of pelvic inflammatory disease presents with amenorrhea and mild lower abdominal pain. Serum β-hCG is 1200 mIU/mL. Transvaginal ultrasound shows no intrauterine gestational sac, but a 2 cm echoic mass is seen in the right fallopian tube with a live fetal pole and cardiac activity. Which feature best distinguishes a tubal ectopic pregnancy from a cornual ectopic pregnancy?

A 28-year-old woman presents with 6 weeks of amenorrhea, right lower abdominal pain, and vaginal spotting. Transvaginal ultrasound shows an empty uterus with a 3.5 cm mass in the right adnexa. β-hCG is 8,500 mIU/mL. She is hemodynamically stable with no signs of rupture. What is the drug of choice for medical management of this ectopic pregnancy?

A 32-year-old woman with a history of pelvic inflammatory disease presents with 8 weeks of amenorrhea and right-sided abdominal pain. Transvaginal ultrasound reveals a 2.8 cm gestational sac with a yolk sac in the right fallopian tube. β-hCG is 3,200 mIU/mL. She is hemodynamically stable. Which drug is the first-line pharmacologic treatment for this tubal ectopic pregnancy?

A 28-year-old woman presents with 6 weeks amenorrhea, lower abdominal pain, and vaginal spotting. On examination, she has cervical motion tenderness and a palpable adnexal mass. Urine β-hCG is positive. What is the investigation of choice to confirm the diagnosis of ectopic pregnancy?

A 28-year-old woman with a positive urine pregnancy test presents with acute lower abdominal pain and vaginal bleeding. Transvaginal ultrasound shows no intrauterine gestational sac but a 3 cm mass in the left adnexa with free fluid in the pelvis. Which single feature best distinguishes a ruptured ectopic pregnancy from an unruptured ectopic pregnancy?