Dystocia means slow or difficult labor or delivery or impaired labor.
Fetal dystocia is an abnormal fetal size or position that results in a difficult delivery.
Fetal dystocia may occur when the fetus is very large for the pelvic opening fetopelvic disproportion or is abnormally positioned.
For example, breech presentation, and shoulder dystocia.
Causes of Dystocia:
An Abnormalities of the expulsive forces are either uterine forces insufficiently strong or inappropriately coordinated to efface or dilate the cervix or inadequate voluntary muscle effort during the second stage of labor.
The Abnormalities of presentation, position, or development of the fetus.
The Abnormality of the maternal boney pelvis is pelvic contraction.
The Abnormalities of the birth canal other than the bony pelvis form an obstacle to fetal descent.