<unk>  <unk> , also known as an amniotomy, is performed by a midwife or obstetrician and was once thought to be an effective means to induce or accelerate labor. The<unk>  can be ruptured using a specialized tool, such as an amnihook or amnicot, or they may be ruptured by the proceduralist's finger. The different techniques for<unk>  have not been extensively compared in the literature. In one study comparing amnihook versus amnicot for<unk> , use of an amnicot was associated with fewer neonatal scalp lacerations. With the amnihook method, a sterile plastic hook is inserted into the vagina and used to puncture the<unk>  containing the amniotic fluid. With the<unk>  punctured, amniotic fluid is able to escape from the uterus and exit the vagina. The absence of a fluid buffer between the fetus and uterus stimulates uterine contractions, which are also promoted by the rush of prostaglandins from the amniotic fluid.
Artificial rupture of membranes
Pneumonolysis
Chorioamnionitis
Rupture of membranes
Fetal-maternal haemorrhage
Toxic abortion
Placental abruption
Primrose syndrome