occipitoposterior position

oc·cip·i·to·pos·te·ri·or po·si·tion (OP),

a cephalic presentation of the fetus with its occiput turned toward the sacrum or rotated to the right (right occipitoposterior, ROP) or to the left (left occipitoposterior, LOP) sacroiliac joint of the mother.
Farlex Partner Medical Dictionary © Farlex 2012

oc·cip·i·to·pos·te·ri·or po·si·tion

(OP) (ok-sip'i-tō-pos-tēr'ē-ŏr pŏ-zish'ŏn)
A cephalic presentation of the fetus with its occiput turned toward the right (right occipitoposterior, ROP) or to the left (left occipitoposterior, LOP) sacroiliac joint of the mother.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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References in periodicals archive ?
This finding is consistent with other studies showing labour dystocia as a cause of Caesarean delivery.13,14 Caughey et al.14 studied different factors affecting dystocia in primiparous women including malpresentation, occipitoposterior position, macrosomia etc.
The occipitoposterior position has a protective effect for shoulder dystocia, but the risk of brachial plexus injury is increased in the setting of a persistent occipitoposterior delivery.
-- Digital or manual rotation of fetuses in the persistent occipitoposterior position reduces the need for instrumental deliveries and cesarean section, reported O.
In a prospective, nonrandomized study, the investigators studied 61 women with a fetus in the occipitoposterior position who had completed half of the normal second stage of labor.
Previous epidemiologic studies have estimated the prevalence of the occipitoposterior position to be about 5%.
MIAMI BEACH -- In primiparous pregnancies, fewer than one in three fetuses in a persistent occipitoposterior position wind up having a spontaneous vaginal delivery, and even then, mothers are at a high risk for severe perineal tears, according to the findings of an Irish study.
Physicians really need to be aware that if they diagnose persistent occipitoposterior position (POP) "this could either be a very difficult instrumental delivery or even a cesarean section," Dr.
[2] Torpin and Faulkner (1957) reported that occipitoposterior positions were more frequent when the placenta was anterior (47.4%) than when the placenta was posterior (21.2%).
The different positions are used to correct subtle malpositions of the infant head, such as asynclitism or right occipitoposterior positions. The authors present little evidence to support the ability of a new position to modify the presentation, especially in the active phases of labor.