Ultrasound: Pelvic: Difference between revisions
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==Nonpregnant== | ==Nonpregnant== | ||
*Ovarian torsion | *[[Ovarian torsion]] | ||
**increased risk with cyst(s) > 5mm | **increased risk with cyst(s) > 5mm | ||
Revision as of 22:17, 1 January 2014
OB
Definite IUP = gestational sac containing yolk sac
- Occurs ~5.5th week
- MUST contain yolk sac to be confirmed IUP. Pseudogestational 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
Nonpregnant
- Ovarian torsion
- increased risk with cyst(s) > 5mm
Diagnostic Algorithm
See Also
Source
- Sonoguide
- Barnhart KT. Ectopic Pregnancy [clinical practice]. N Engl J Med. 2009;361(4):379-387.