The goal of diagnosing an ectopic pregnancy is to make the determination before rupture, allowing conservative, medical treatment
If TVU definitively shows ectopic pregnancy (gestational sac with yolk sac and/or embryo in adnexa), or failed intrauterine pregnancy, treat accordingly
‘Discriminatory Level’
Trending hCG levels
NOTE: Obtain blood type and Rh status on all women suspected of ectopic pregnancy and all Rh-negative women with bleeding should receive RhO(D) immune globulin (RhoGam), regardless of the final outcome of the pregnancy
Over 90% of ectopic pregnancies are in the fallopian tube; the remainder can occur in the cervix, ovary, uterine cornua or abdomen. Risk factors for ectopic pregnancies include tubal surgery, PID, previous ectopic pregnancy (10% with one previous ectopic rising to 25% with ≥2), infertility, assisted reproductive technologies with multiple embryo transfer, previous pelvic/abdominal surgery, age >35 years and smoking. IUDs are associated with fewer ectopics compared to women not using contraception because IUDs are such an effective method of birth control. However, if a woman does become pregnant with an IUD, the risk of an ectopic is approximately 50%. Note that at least half of women with ectopic pregnancies have no risk factors.
Have a high index of suspicion for ectopic pregnancy in any premenopausal woman with abnormal uterine bleeding and pain
Role of Endometrial Aspiration
ACOG Practice Bulletin 193: Tubal Ectopic Pregnancy
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