TY - CHAP M1 - Book, Section TI - Chapter 187. Labor Analgesia A1 - Hack, Anjali Fedson A2 - Atchabahian, Arthur A2 - Gupta, Ruchir PY - 2013 T2 - The Anesthesia Guide 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 SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/04/16 UR - accessanesthesiology.mhmedical.com/content.aspx?aid=57263440 ER -