This chapter will address methods for evaluation of pregnancy dating, location, and viability, including the use of human chorionic gonadotropin (hCG) testing and diagnostic ultrasound (US). Persons of childbearing age are typically healthy. Uterine aspiration can be done safely for most patients in a clinic setting. However, this chapter will also address issues in the medical history that may either determine the setting in which uterine aspiration can be most safely provided.




Following completion of this chapter, you should be better able to:

  • Use clinical and sonographic findings to accurately estimate gestational age
  • Differentiate sonographic characteristics of a true gestational sac from a pseudosac
  • Use laboratory and sonographic findings to diagnose a non-viable pregnancy
  • List clinical, lab, and sonographic findings that constitute red flags for ectopic pregnancy
  • Gather appropriate historical, physical exam, and lab information to safely perform uterine aspiration in an outpatient setting, and know when to consult/refer.




  • Paul et al (eds). Management of Unintended and Abnormal Pregnancy: Comprehensive Abortion Care (2009)
    • Chapter 6: Clinical Assessment and Ultrasound in Early Pregnancy
    • Chapter 7: Medical Evaluation and Management
  • Ultrasound Curricula
    • Affiliates Risk Management Services, Inc. Ultrasound in Abortion Care Training Workbook, 2007
    • AUIM Ultrasound Lecture Series: Obstetrics and Gynecology, 2013
  • Organization of Teratogenic Information Specialists
  • Related Chapter Content



Early Abortion Training Workbook Copyright © 2016 by UCSF Bixby Center for Global Reproductive Health. All Rights Reserved.