Late-pregnancy, painless vaginal bleeding with a soft uterus is most consistent with which condition?

Late-pregnancy, painless vaginal bleeding with a soft uterus is most consistent with which condition?

• A. Placenta previa
• B. Placental abruption
• C. Uterine rupture
• D. Ectopic pregnancy

Answer: (A)

Painless, late-pregnancy vaginal bleeding with a soft uterus is most consistent with placenta previa. In placenta previa, the placenta implants low in the uterus and may cover or lie near the cervical os. Bleeding occurs without painful contractions because the bleed is not the result of uterine rupture or placental tearing driven by contractions, so the uterus remains soft and non-tender. This contrasts with placental abruption, where bleeding is usually painful and the uterus is firm and tender due to placental separation and increasing uterine contractions. Uterine rupture presents with sudden, severe abdominal pain, potential loss of fetal station, and maternal instability, and the uterus may feel tense or change tone rather than remain soft. Ectopic pregnancy typically presents earlier in gestation with abdominal pain and often hemodynamic signs if rupture occurs. If you encounter this pattern, prioritize obstetric-focused care: assess and support the patient, monitor the fetal status, establish IV access, provide oxygen as needed, and arrange rapid transport to an obstetric center, while avoiding vaginal examination until placental location is confirmed.

Painless, late-pregnancy vaginal bleeding with a soft uterus is most consistent with placenta previa. In placenta previa, the placenta implants low in the uterus and may cover or lie near the cervical os. Bleeding occurs without painful contractions because the bleed is not the result of uterine rupture or placental tearing driven by contractions, so the uterus remains soft and non-tender.

This contrasts with placental abruption, where bleeding is usually painful and the uterus is firm and tender due to placental separation and increasing uterine contractions. Uterine rupture presents with sudden, severe abdominal pain, potential loss of fetal station, and maternal instability, and the uterus may feel tense or change tone rather than remain soft. Ectopic pregnancy typically presents earlier in gestation with abdominal pain and often hemodynamic signs if rupture occurs.

If you encounter this pattern, prioritize obstetric-focused care: assess and support the patient, monitor the fetal status, establish IV access, provide oxygen as needed, and arrange rapid transport to an obstetric center, while avoiding vaginal examination until placental location is confirmed.