Key references: Investigations before medical abortion

  • Barnhart KT, Sammel MD, Rinaudo PF, Zhou L, Hummel AC, Guo W. Symptomatic patients with an early viable intrauterine pregnancy: HCG curves redefined. Obstet Gynecol 2004;104(1):50–5. https://www.ncbi.nlm.nih.gov/pubmed/15229000
  • Barnhart KT, Guo W, Cary MS, Morse CB, Chung K, Takacs P, et al. Differences in serum human chorionic gonadotropin rise in early pregnancy by race and value at presentation. Obstet Gynecol 2016;128(3):504–11. https://www.ncbi.nlm.nih.gov/pubmed/27500326
  • Bree RL, Edwards M, Bohm-Velez M, Beyler S, Roberts J, Mendelson EB. Transvaginal sonography in the evaluation of normal early pregnancy: correlation with HCG level. AJR Am J Roentgenol 1989;153(1):75–9. https://www.ncbi.nlm.nih.gov/pubmed/2660539
  • Connolly A, Ryan DH, Stuebe AM, Wolfe HM. Reevaluation of discriminatory and threshold levels for serum beta-hCG in early pregnancy. Obstet Gynecol 2013;121(1):65–70. https://www.ncbi.nlm.nih.gov/pubmed/23262929
  • Debnath J, Gulati SK, Mathur A, Gupta R, Kumar N, Arora S, et al. Ectopic pregnancy in the era of medical abortion: are we ready for it? Spectrum of sonographic findings and our experience in a tertiary care service hospital of India. J Obstet Gynaecol India 2013;63(6):388–93. https://www.ncbi.nlm.nih.gov/pubmed/24431685
  • Hollenbach SJ, Cochran M, Harrington A. "Provoked" feto-maternal hemorrhage may represent insensible cell exchange in pregnancies from 6 to 22 weeks gestational age. Contraception 2019;100(2):142–6. https://www.ncbi.nlm.nih.gov/pubmed/30980826
  • Mark A, Foster AM, Grossman D, Prager SW, Reeves M, Velasquez CV, et al. Foregoing Rh testing and anti-D immunoglobulin for women presenting for early abortion: a recommendation from the National Abortion Federation's Clinical Policies Committee. Contraception 2019;99(5):265–6. https://www.ncbi.nlm.nih.gov/pubmed/30867121
  • Skandhan AKP, Gaillard F. Empty gestational sac. Radiopaedia.org.https://radiopaedia.org/articles/empty-gestational-sac?lang=gb [accessed 23 June 2020]
  • The Royal Australian and New Zealand College of Obstetricians and Gynaecologists (RANZCOG). The use of mifepristone for medical abortion. East Melbourne: RANZCOG; 2019. https://ranzcog.edu.au/news/ranzcog-guidance-on-abortion