RT Book, Section A1 Hack, Anjali Fedson A2 Atchabahian, Arthur A2 Gupta, Ruchir SR Print(0) ID 57263440 T1 Chapter 187. Labor Analgesia T2 The Anesthesia Guide YR 2013 FD 2013 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-176049-2 LK accessanesthesiology.mhmedical.com/content.aspx?aid=57263440 RD 2024/03/28 AB Table Graphic Jump Location|Download (.pdf)|PrintStages of LaborStagesDermatomesDefinitionFirstT10–L1Uterine contractions with dilation of cervix until fully dilatedSecondS2–S4Full dilation of cervix until delivery of infantThirdS2–S4Expulsion of placenta