STUDY OBJECTIVE: To analyze the effects of @entity1337 for labor when @entity1266 occurs. DESIGN: Retrospective cohort study. SETTING: Academic health center. @entity1 : 641 low risk, nulliparous @entity1 in spontaneous labor. INTERVENTIONS: 406 (63%) @entity1 received epidurals analgesia and 253 (37%) did not. Sixty @entity1 (9.4%) required an abdominal delivery for @entity1266 . MEASUREMENTS AND MAIN RESULTS: @entity1 receiving @entity1337 were more likely to be white, receive care from an attending physician, need labor augmentation, and deliver a heavier @entity1 . Multivariate analysis identified five variables predictive of @entity1266 and abdominal delivery: @entity398 augmentation odds ratio (O.R.) = 3.9 (2.0 to 7.6), duration of labor more than 20 hours O.R. = 2.4 (1.3 to 4.4), high epidural dose O.R. = 2.2 (1.2 to 4.1), birthweight over 4,000 grams O.R. = 2.0 (1.0 to 4.2), and early placement of epidural O.R. = 1. 9 (1.0 to 3.5). Repeating the regression after excluding the 20 @entity1 who developed @entity854 prior to epidural placement (18 of 20 @entity1 had protracted dilatation) demonstrated that @entity398 augmentation O.R. = 4.0 (1.8 to 4.), high epidural dose O.R. = 3.0 (1.9 to 6.2), duration of labor greater than 20 hours O.R. = 2.7 (1.3 to 5.7), and birthweight over 4,000 grams O.R. = 2.1 (0. 9 to 4.8) were associated with @entity1266 . CONCLUSION: Epidural analgesia appears to be a marker of @entity854 rather than a cause of @entity1266 . High concentration anesthetics and epinephrine should be avoided, as they may influence labor. Randomized, controlled trials of this technique will be difficult to do; our work should reassure @entity1 and their clinicians that @entity1337 does not adversely affect labor.

Does XXXX cause @entity1266 ?

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'Women', 'PATIENTS', 'infant'] @entity398 :: ('MESH:D010121', 'Chemical') :: ['pitocin'] @entity1337 :: ('MESH:D000699', 'Disease') :: ['epidural analgesia'] @entity1266 :: ('MESH:D004420', 'Disease') :: ['dystocia'] @entity854 :: ('MESH:D018376', 'Disease') :: ['abnormal labor']
@entity1337 :: (MESH:D000699,Disease) :: ['epidural analgesia']
