3.4 Diagnosis of bleeding during the second half of pregnancy (summary)


Table 3.1 - Aetiological diagnosis


Placenta praevia

Abruptio placenta

Uterine rupture

History


  • Twin pregnancy
  • Caesarean section
  • Bleeding during a previous pregnancy
  • Pre-eclampsia
  • Primipara
  • Trauma
  • Long labour
  • Primipara
  • Dystocia
  • Grand multipara (> 6)
  • Caesarean section
  • Overuse of uterotonic
Clinical signs

Bleeding

  • Bright red blood
  • Painless bleeding, spontaneous or after vaginal exam or sexual intercourse
  • Bleeding without warning sign
  • Light flow of blackish blood, or sudden bright red bleeding
  • Bleeding with severe, constant uterine and lower back pain

Variable

Haemorrhagic shock

  • Blood loss visible
  • Shock proportional to amount of bleeding
  • Blood loss not always visible
  • Shock out of proportion to the amount of visible bleeding (intra-abdominal or retroplacental bleeding)
  • Diffuse haemorrhage
  • Blood loss not always visible
  • Shock out of propor- tion to the amount of visible bleeding (intra- abdominal bleeding)

Uterus

  • Soft uterus
  • Contractions, if present, are intermittent
  • Foetus high and mobile
  • Painful, continuous contraction (“woody” uterus)
  • Foetal position hard to determine (hard uterus and haematoma)

Foetus sometimes expelled into the abdominal cavity: uterus is retracted into a ball, the foetus felt under the skin

Vaginal exam

Soft, spongy placenta

Perform only one, very cautious, vaginal exam if ultrasound is not available.

Cervix often closed

Vaginal exam not helpful in diagnosis of abruptio placenta.


Foetal heart tone

Normal in the absence of maternal shock

Absent or weak

Absent or weak