Placenta previa: Difference between revisions

Revision as of 01:19, 25 August 2011

Placenta that extends near, partially over, or beyond the internal cervical os
1. Can be total, partial, or marginal
Do NOT perform digital or speculum exam

Tintinalli

Authors:

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 ==Background==
-# placenta improperly positioned between cervic and baby. can be total, partial or marginal
+#Placenta that extends near, partially over, or beyond the internal cervical os
-# tx c c section
+##Can be total, partial, or marginal
-# 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)
+#Do NOT perform digital or speculum exam
-# assoc with intrauterine growth retardation, congenital abnormalities, and placenta prev.
 ==Risk Factors==
-# c section
+#Uterine sx
-# previous pl previa
+#Advanced maternal age
-# twins
+#Cigarette smoking
-# D&C
+#Cocaine abuse
-# muliparous
-# scarring of uterus with no place for placenta to attach except at botton near cervix
 ==Diagnosis==
-# painless bright red blood
+*Painless vaginal bleeding
-# exam only with double set up in OR by obstetrician
+*US
-# in ER use abd utz
+**Shows position of placenta
-# 90% of prev dx before 20 wks will have placnta that migrates away from cervix or lower ut  segmnt will grow more
+==Management==
+#Type + cross
+#CBC
+#Coags
 ==Treatment==
-# c section
+#C-section
-# if fetus not viable, tx in hospital until viable then c section
+==Source==
+Tintinalli
 [[Category:OB/GYN]]