Ultrasound: Pelvic: Difference between revisions
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== | ==OB== | ||
Definite IUP = gestational sac containing yolk sac | Definite IUP = gestational sac containing yolk sac | ||
*Occurs ~5.5th week | *Occurs ~5.5th week | ||
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*can be measured by crown rump length, femur length, biparietal diameter, etc. | *can be measured by crown rump length, femur length, biparietal diameter, etc. | ||
** depends on gestational age and quality/type of image aquired | ** depends on gestational age and quality/type of image aquired | ||
==Nonpregnant== | |||
*Ovarian torsion | |||
**increased risk with cyst(s) > 5mm | |||
== Diagnostic Algorithm == | == Diagnostic Algorithm == | ||
Revision as of 18:15, 21 September 2013
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.