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Labor Onset

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Definition: The beginning of true OBSTETRIC LABOR which is characterized by the cyclic uterine contractions of increasing frequency, duration, and strength causing CERVICAL DILATATION to begin (LABOR STAGE, FIRST ).  human only; check tags FEMALE & PREGNANCY   
Examples Labor Stage, First; Labor Stage, Second; Labor Stage, Third 		Other names Labor Onsets; Onsets, Labor; Onset, Labor

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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