https://www.selleckchem.com/pr....oducts/sb-204990.htm
Maternal and neonatal outcomes associated with duration of arrest of dilation beyond 4 hours are not well known. In addition, the current definition of arrest does not consider the degree of cervical dilation (6 cm vs 7 cm vs 8 cm vs 9 cm) when arrest occurs. We sought to examine maternal and neonatal outcomes in nulliparous women who achieved the active phase of labor according to the duration they required to achieve a cervical change of at least 1 cm (4 hours vs 4-5.9 hours vs ≥6 hours) beginning at 6, 7, 8 and 9 cm. This was a