Ultrasound: Pelvic: Difference between revisions
(EGA) |
(must r/o pseudogestational sac) |
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Definite IUP = gestational sac containing yolk sac | Definite IUP = gestational sac containing yolk sac | ||
*Occurs ~5.5th week | *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 | *B-HCG below Discriminatory Zone = <1,500-3,000 mIU/ml | ||
*Consider Transabd US for IUP: >6000 mIU/ml | *Consider Transabd US for IUP: >6000 mIU/ml |
Revision as of 22:42, 17 September 2013
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 Also
Source
- Sonoguide
- Barnhart KT. Ectopic Pregnancy [clinical practice]. N Engl J Med. 2009;361(4):379-387.