Diagnosing onset of labor: a systematic review of definitions in the research literature View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2016-12

AUTHORS

Gillian E. Hanley, Sarah Munro, Devon Greyson, Mechthild M. Gross, Vanora Hundley, Helen Spiby, Patricia A. Janssen

ABSTRACT

BACKGROUND: The diagnosis of labor onset has been described as one of the most important judgments in maternity care. There is compelling evidence that the duration of both latent and active phase labor are clinically important and require consistent approaches to measurement. In order to measure the duration of labor phases systematically, we need standard definitions of their onset. We reviewed the literature to examine definitions of labor onset and the evidentiary basis provided for these definitions. METHODS: Five electronic databases were searched using predefined search terms. We included English, French and German language studies published between January 1978 and March 2014 defining the onset of latent labor and/or active labor in a population of healthy women with term births. Studies focusing exclusively on induced labor were excluded. RESULTS: We included 62 studies. Four 'types' of labor onset were defined: latent phase, active phase, first stage and unspecified. Labor onset was most commonly defined through the presence of regular painful contractions (71% of studies) and/or some measure of cervical dilatation (68% of studies). However, there was considerable discrepancy about what constituted onset of labor even within 'type' of labor onset. The majority of studies did not provide evidentiary support for their choice of definition of labor onset. CONCLUSIONS: There is little consensus regarding definitions of labor onset in the research literature. In order to avoid misdiagnosis of the onset of labor and identify departures from normal labor trajectories, a consistent and measurable definition of labor onset for each phase and stage is essential. In choosing standard definitions, the consequences of their use on rates of maternal and fetal morbidity must also be examined. More... »

PAGES

71

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1186/s12884-016-0857-4

DOI

http://dx.doi.org/10.1186/s12884-016-0857-4

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1016265669

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/27039302


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101 schema:description BACKGROUND: The diagnosis of labor onset has been described as one of the most important judgments in maternity care. There is compelling evidence that the duration of both latent and active phase labor are clinically important and require consistent approaches to measurement. In order to measure the duration of labor phases systematically, we need standard definitions of their onset. We reviewed the literature to examine definitions of labor onset and the evidentiary basis provided for these definitions. METHODS: Five electronic databases were searched using predefined search terms. We included English, French and German language studies published between January 1978 and March 2014 defining the onset of latent labor and/or active labor in a population of healthy women with term births. Studies focusing exclusively on induced labor were excluded. RESULTS: We included 62 studies. Four 'types' of labor onset were defined: latent phase, active phase, first stage and unspecified. Labor onset was most commonly defined through the presence of regular painful contractions (71% of studies) and/or some measure of cervical dilatation (68% of studies). However, there was considerable discrepancy about what constituted onset of labor even within 'type' of labor onset. The majority of studies did not provide evidentiary support for their choice of definition of labor onset. CONCLUSIONS: There is little consensus regarding definitions of labor onset in the research literature. In order to avoid misdiagnosis of the onset of labor and identify departures from normal labor trajectories, a consistent and measurable definition of labor onset for each phase and stage is essential. In choosing standard definitions, the consequences of their use on rates of maternal and fetal morbidity must also be examined.
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402 Department of Obstetrics & Gynaecology, University of British Columbia, Vancouver, BC, Canada
403 Interdisciplinary Studies Department, University of British Columbia, Vancouver, BC, Canada
404 School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
405 rdf:type schema:Organization
406 https://www.grid.ac/institutes/grid.4563.4 schema:alternateName University of Nottingham
407 schema:name School of Health Sciences, University of Nottingham, Nottingham, UK
408 rdf:type schema:Organization
 




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