Changes in labor patterns over 50 years.

MedStar author(s):
Citation: American Journal of Obstetrics & Gynecology. 206(5):419.e1-9, 2012 May.PMID: 22542117Institution: MedStar Washington Hospital CenterDepartment: Obstetrics and Gynecology, Maternal-Fetal MedicineForm of publication: Journal ArticleMedline article type(s): Journal Article | Research Support, N.I.H., IntramuralSubject headings: *Delivery, Obstetric/td [Trends] | *Labor, Obstetric/ph [Physiology] | Adult | Age Factors | Body Mass Index | Delivery, Obstetric/mt [Methods] | Delivery, Obstetric/sn [Statistics & Numerical Data] | Female | Humans | Labor Stage, First | Labor Stage, Second | Linear Models | Multivariate Analysis | Parity | Physician's Practice Patterns | Pregnancy | Pregnancy Outcome | Retrospective Studies | Time Factors | United StatesLocal holdings: Available online from MWHC library: 1995 - present, Available in print through MWHC library: 1999 - 2006ISSN:
  • 0002-9378
Name of journal: American journal of obstetrics and gynecologyAbstract: CONCLUSION: Labor is longer in the modern obstetrical cohort. The benefit of extensive interventions needs further evaluation. Published by Mosby, Inc.OBJECTIVE: The objective of the study was to examine differences in labor patterns in a modern cohort compared with the 1960s in the United States.RESULTS: Compared with the CPP, women in the CSL were older (26.8 +/- 6.0 vs 24.1 +/- 6.0 years), heavier (body mass index 29.9 +/- 5.0 vs 26.3 +/- 4.1 kg/m(2)), had higher epidural (55% vs 4%) and oxytocin use (31% vs 12%), and cesarean delivery (12% vs 3%). First stage of labor in the CSL was longer by a median of 2.6 hours in nulliparas and 2.0 hours in multiparas, even after adjusting for maternal and pregnancy characteristics, suggesting that the prolonged labor is mostly due to changes in practice patterns.STUDY DESIGN: Data from pregnancies at term, in spontaneous labor, with cephalic, singleton fetuses were compared between the Collaborative Perinatal Project (CPP, n = 39,491 delivering 1959-1966) and the Consortium on Safe Labor (CSL; n = 98,359 delivering 2002-2008).All authors: Beaver J, Branch DW, Laughon SK, Zhang JDigital Object Identifier: Date added to catalog: 2013-09-17
Holdings
Item type Current library Collection Call number Status Date due Barcode
Journal Article MedStar Authors Catalog Article Available 22542117

Available online from MWHC library: 1995 - present, Available in print through MWHC library: 1999 - 2006

CONCLUSION: Labor is longer in the modern obstetrical cohort. The benefit of extensive interventions needs further evaluation. Published by Mosby, Inc.

OBJECTIVE: The objective of the study was to examine differences in labor patterns in a modern cohort compared with the 1960s in the United States.

RESULTS: Compared with the CPP, women in the CSL were older (26.8 +/- 6.0 vs 24.1 +/- 6.0 years), heavier (body mass index 29.9 +/- 5.0 vs 26.3 +/- 4.1 kg/m(2)), had higher epidural (55% vs 4%) and oxytocin use (31% vs 12%), and cesarean delivery (12% vs 3%). First stage of labor in the CSL was longer by a median of 2.6 hours in nulliparas and 2.0 hours in multiparas, even after adjusting for maternal and pregnancy characteristics, suggesting that the prolonged labor is mostly due to changes in practice patterns.

STUDY DESIGN: Data from pregnancies at term, in spontaneous labor, with cephalic, singleton fetuses were compared between the Collaborative Perinatal Project (CPP, n = 39,491 delivering 1959-1966) and the Consortium on Safe Labor (CSL; n = 98,359 delivering 2002-2008).

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