Abstract
Article: 3D Volume Assessment of a Cornual Heterotopic Double Anembryonic Gestation and Response to Methotrexate Treatment
Authors: Rebecca Hall, PhD, RDMS, FSDMS; Francis W. Byrn, MD; Stephanie Philippides, MD
Category: OB/GYN
Credit: 1.0 SDMS CME Credit
Objectives: After studying the article titled “3D Volume Assessment of a Cornual Heterotopic Double Anembryonic Gestation and Response to Methotrexate Treatment,” you will be able to:
Describe the causes for the trend toward increasing incidence of heterotopic pregnancies
Describe the sonographic features of a typical gestational sac
Discuss laboratory measures used for diagnosis of extrauterine pregnancies
A heterotopic pregnancy is defined as A twin pregnancy complicated by intrauterine growth retardation A pregnancy with fraternal twins A simultaneous intrauterine and extrauterine pregnancy A twin pregnancy with conjoined twins
Typical sonographic characteristics of a gestational sac include A hypoechoic round structure with an anechoic rim A hypoechoic round structure with an echogenic rim A hyperechoic round structure with a hypoechoic rim A hyperechoic round structure with an echogenic rim
Pregnancies of the cornu account for approximately what percentage of ectopic pregnancies? 1%–4% 5%–7% 8%–9% Greater than 10%
A term often used interchangeably with cornual pregnancy is Tubal pregnancy Interstitial pregnancy Cervical pregnancy Ovarian pregnancy
Sonographic characteristics of a cornual pregnancy are a gestational sac with a thin rim located from the lateral wall of the endometrial cavity by more than 1 mm 5 mm 10 mm 15 mm
A cornual pregnancy is of clinical concern because of the risk of Maternal pain Vaginal bleeding Excessive fallopian tube dilation Rupture with hemorrhage
Anembryonic gestation is sonographically diagnosed by identification of a gestational sac without evidence of a yolk sac or embryo and measuring greater than 5 mm 10 mm 15 mm 20 mm
The growth rate for a normal intrauterine pregnancy gestational sac is approximately 0.70 mm/d 0.95 mm/d 1.13 mm/d 1.27 mm/d
The highest rates of heterotopic pregnancy appear to be associated with assisted reproductive technologies when there is embryo transfer to the uterus of greater than 4 5 6 7
Quantitative human chorionic gonadotropin (hCG) levels in the nonpregnant female should be <5 mIU/mL <50 mIU/mL >5000 mIU/mL >50,000 mIU/mL
Footnotes