612. Components of fetal heart tracings to be assessed / Define baseline heart rate / Two types of variability / Significance of variability November 6th, 2008 by reuben in pregnancy Back Top Tags: card 611. When does stage two of labor start and end? What is its duration? / Options for ancillary monitoring in labor / Indications for third trimester ultrasonography 613. Types of decelerations and their significance / How to distinguish them on a tracing Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.