A 24-year-old woman presents with abdominal pain and vaginal bleeding. Her last menstrual period was eight weeks ago and pregnancy status is unknown.

1. State the discriminatory quantitative beta-hCG levels for transvaginal and transabdominal ultrasound. 2 marks

2. Describe the relevance of serum beta-hCG level to ultrasound interpretation and management. 4 marks

Her bHCG level returns at 7400IU/L.

3. Identify the labelled structures on the ultrasound image. 4 marks

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4. List two ultrasound features of failed pregnancy. 2 marks