RT Book, Section A1 Cunningham, F. Gary A1 Leveno, Kenneth J. A1 Bloom, Steven L. A1 Dashe, Jodi S. A1 Hoffman, Barbara L. A1 Casey, Brian M. A1 Spong, Catherine Y. SR Print(0) ID 1160774321 T1 Fetal Assessment T2 Williams Obstetrics, 25e YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9781259644320 LK obgyn.mhmedical.com/content.aspx?aid=1160774321 RD 2023/09/21 AB The rate of the foetal heart is subject to considerable variations, which affords us a fairly reliable means of judging as to the well-being of the child. As a general rule, its life should be considered in danger when the heart-beats fall below 100 or exceed 160.—J. Whitridge Williams (1903)