Final answer:
Subchorionic hematoma is detected by an initial ultrasound and is monitored over time with subsequent follow-up ultrasounds to assess changes in size and to ensure the health of the pregnancy.
Step-by-step explanation:
Subchorionic hematoma is initially diagnosed by ultrasound and reevaluated with follow-up ultrasounds.
During the initial ultrasound, healthcare providers look for abnormal blood collections between the chorion, a membrane surrounding the embryo, and the wall of the uterus. A subchorionic hematoma is among the findings that can be indicative of complications during pregnancy, therefore, its diagnosis and monitoring are crucial. The size and location of the hematoma can help predict the prognosis, and sometimes bed rest or other precautions are recommended based on the findings.
Follow-up ultrasounds are conducted to monitor the size of the hematoma, to assess for any changes, and to ensure the ongoing health of the pregnancy. If the hematoma resolves or diminishes, this can be a favorable sign, whereas persistence or growth may require additional intervention or monitoring.