Late Pregnancy Bleeding 6 Flashcards
Late pregnancy bleeding is
vaginal bleeding that occurs after 20 weeks’ gestation. Prevalence is <5%, but when it does occur, prematurity and perinatal mortality quadruple.
Cervical causes of late pregnancy bleeding include
erosion, polyps, and, rarely, carcinoma
Vaginal causes of late pregnancy bleeding include
varicosities and lacerations
Placental causes of late pregnancy bleeding include
abruptio placentae, placenta previa, and vasa previa
Prevalence is
<5%, but when it does occur, prematurity and perinatal mortality quadruple.
The most common cause of obstetric DIC
Abruptio placenta
Initial Investigation of any late pregnancy bleeding
Complete blood count
disseminated intravascular coagulation (DIC) workup (platelets, prothrombin time, partial thromboplastin time, fibrinogen, D-dimer),
type and cross-match,
and sonogram for placental location.
Initial management of late pregnancy bleeding
Start an IV line with a large-bore needle; if maternal vital signs are unstable → run isotonic fluids and
place a urinary catheter to monitor urine output.
A normally implanted placenta (not in the lower uterine segment) separates from the uterine wall
before delivery of the fetus.
Abruptio placenta
the retroplacental hematoma remains within the uterus.
bleeding remains concealed or interna
bleeding remains concealed or interna
the retroplacental hematoma remains within the uterus .
Risk Factors of Abruptio placentae is seen more commonly with
HTN, previous abruption placenta, maternal blunt trauma
Smoking, cocaine abuse.
Is the most common cause of painful late-trimester bleeding, occurring in 1% of pregnancies at term.
Abruption placenta
Diagnosis of abruption placenta
This is based on the presence of painful late-trimester vaginal bleeding with a normal fundal or lateral
uterine wall placental implantation not over the lower uterine segment.
Crystalloid such as
Saline or lactated Ringer ‘ solution