Ultrasound: Pelvic

Revision as of 22:42, 17 September 2013 by Mcamilon (talk | contribs) (must r/o pseudogestational sac)

Background

Definite IUP = gestational sac containing yolk sac

  • Occurs ~5.5th week
    • MUST contain yolk sac to be confirmed IUP. Pseudogestaional sac possible in ectopic pregnancy
  • B-HCG below Discriminatory Zone = <1,500-3,000 mIU/ml
  • Consider Transabd US for IUP: >6000 mIU/ml

Endometrial mantle

  • normal size > 8 mm

Fetal Heart Rate

  • normal 120-160
  • Use M-mode to calculate

Estimated gestational age

  • can be measured by crown rump length, femur length, biparietal diameter, etc.
    • depends on gestational age and quality/type of image aquired

Diagnostic Algorithm

See Ectopic Pregnancy

See Also

Source

  • Sonoguide
  • Barnhart KT. Ectopic Pregnancy [clinical practice]. N Engl J Med. 2009;361(4):379-387.
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