Prolonged Pregnancy chronologically (suprapurtata, postmaturata, partus serotinus,post-data-labor) is the task that has a longer duration than normal during pregnancy.
The normal duration of pregnancy in humans is 280 days from the first day of last period,270 days after a single sexual contact and 266 days after the last ovulation. The maximum duration of a normal pregnancy is 294 days. The legislation mentions the maximum duration of a task as 300 days.
Causes
Pathogenesis of prolonged pregnancy in chronological maternal factors are involved,fetal and appendices.
Maternal factors - menstrual cycle more than 28-32 days, anovulatory cycles precedingpregnancy late ovulation genetic, poor diet, multiparity, uterine malformations, especiallythose of the cervico-isthmus area, primary uterine inertia, hormonal imbalances, The development of maternal thyroid insufficiency late fetus hisdroelectrolitice disorders(disorders of calcium and magnesium concentration) and maternal stress, it can causeon the one hand and preterm birth abortion and on the other hand, prolongingpregnancy.
Fetal factors - abnormal presentations, fetal anencephaly, fetal sex - 79% of childrenobtained through prolonged pregnancy are male.
Factors Annex - hidramniosul chronic presence of rough membranes adherent to the inferior pole, chronic placental insufficiency.
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