Placenta previa
Revision as of 23:54, 28 March 2011 by Rossdonaldson1 (talk | contribs)
Background
- placenta improperly positioned between cervic and baby. can be total, partial or marginal
- tx c c section
- hem from early separation of placenta from ut- due to gradual thinning of cervix in anticipation of delivery. can also be by physical exertion, labor, local trauma (intercourse, speculum exam)
- assoc with intrauterine growth retardation, congenital abnormalities, and placenta prev.
Risk Factors
- c section
- previous pl previa
- twins
- D&C
- muliparous
- scarring of uterus with no place for placenta to attach except at botton near cervix
Diagnosis
- painless bright red blood
- exam only with double set up in OR by obstetrician
- in ER use abd utz
- 90% of prev dx before 20 wks will have placnta that migrates away from cervix or lower ut segmnt will grow more
Treatment
- c section
- if fetus not viable, tx in hospital until viable then c section