Which signs may accompany abruptio placentae during a second-trimester assessment?

Abruptio placentae, which is the premature separation of the placenta from the uterine wall, often results in a firm uterus upon palpation during clinical assessments. This rigidity can be attributed to the accumulation of blood between the placenta and the uterine wall, causing the uterus to become tense.

In cases of abruptio placentae, other signs such as abdominal pain, vaginal bleeding, and potential fetal distress may also be present. The firmness of the uterus is an important clinical finding that can indicate an underlying issue such as this condition.

The other options do not reflect the typical physical findings associated with abruptio placentae, highlighting the distinct characteristics of this condition. Hence, recognizing the firm uterus during palpation is crucial for diagnosing this serious complication during the second trimester.