asynclitism

asynclitism /asyn·cli·tism/ (ah-sing´klĭ-tizm)

1. oblique presentation of the fetal head in labor, called anterior a. when the anterior parietal bone is designated the point of presentation, and posterior a. when the posterior parietal bone is so designated.

2. maturation at different times of the nucleus and cytoplasm of blood cells.

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a·syn·cli·tism (-snkl-tzm, -sn-)

n.

Absence of synclitism or parallelism between the axis of the presenting part of the fetus and the pelvic planes during childbirth. Also called obliquity.

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asynclitism

[āsing′klitiz′əm]

Etymology: Gk, a + syn, not together, kleisis, to lean

presentation of a parietal aspect of the fetal head to the maternal pelvic inlet in labor. The sagittal suture is parallel to the transverse diameter of the pelvis but anterior or posterior to it. In normal labor, the fetal head usually engages with some degree of asynclitism. Anterior asynclitism, in which the anterior part presents, is called Nägele obliquity. Posterior asynclitism is called Litzmann obliquity. See also cardinal movements of labor, engagement.

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asynclitism [ah-sin´klĭ-tizm]

oblique presentation of the fetal head in labor, called anterior asynclitism when the anterior parietal bone is designated the point of presentation, and posterior asynclitism when the posterior parietal bone is so designated.

dyserythropoiesis.