Question 21
The overall prevalence of ectopic pregnancy is 2%. In a patient with first trimester bleeding, however, the prevalence increases to
Question 22
What is the most common location for an ectopic pregnancy?
Question 23
Which of these is diagnostic of pregnancy failure?
Question 24
Approximately what percentage of ectopic pregnancies have a normal beta-hCG doubling time?
Question 25
A patent urachus is due to a failure of involution of what fetal structure?
Question 26
What myometrial thickness around the edge of a gestational sac located near the uterine cornua is suspicious for an interstitial ectopic pregnancy?
Question 27
Among women with an ectopic pregnancy and a prior history of a cesarean section, what is the approximate frequency of cesarean section scar pregnancy?
Question 29
All of the following could be an underlying predisposing factor for this patient, EXCEPT...
Question 30
For diagnostic ultrasound, the setting at the red arrow is better if...
Question 31
What is the most likely diagnosis?
Question 76
Which of these CANNOT be detected on a first trimester ultrasound study at 12-13 weeks?
Question 123
Which segment of the colon would develop the most wall tension in a low rectal obstruction?
Question 165
What is the most common cause of esophageal perforation?
Question 166
How often do false negative studies for Boerhaave syndrome occur with fluoroscopy?
Question 167
What is the most common cause of adult mechanical large bowel obstruction in industrialized nations?
Question 168
There may be intestinal malrotation if which vessel is located to the left of the superior mesenteric artery?
Question 169
Which of these is the best ultrasound finding to exclude ovarian torsion?
Question 176
Which of these is a risk factor for ovarian torsion?
Question 178
An embryo without a heart rate may indicate a failed early pregnancy, but what crown rump length (CRL) is necessary to make the diagnosis on transvaginal ultrasound?
Question 366
What is the most common gallstone composition?