A. ST segment changes in normal and hypoxic conditions. B A. ST segment changes in normal and hypoxic conditions. B. Generation of T:QRS ratios. (Redrawn with permission from Contemporary OB/GYN (Technology), September 15, 2006, pp. 6–10. Contemporary OB/GYN (Technology) is a copyrighted publication of Advanstar Communications Inc. All rights reserved.) Source: Chapter 18. Intrapartum Assessment, Williams Obstetrics, 23e Citation: Cunningham F, Leveno KJ, Bloom SL, Hauth JC, Rouse DJ, Spong CY. Williams Obstetrics, 23e; 2010 Available at: https://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/cunn23/cunn23_c018f029a.gif&sec=41684479&BookID=350&ChapterSecID=41680582&imagename= Accessed: October 20, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved