垂体后叶激素
缩宫素(oxytocin) Pharmacodynamics
1.兴奋子宫 对子宫不同部位的影响 剂量的影响
体内雌激素、孕激素水平的影响 2.其他作用
缩宫素能使乳腺泡周围的肌上皮细胞 (属平滑肌)收缩,促进排乳。
大剂量可松弛血管平滑肌,引起血压下 降,并有抗利尿作用。
Pharmacokinetics
Prostaglandin analogues, e.g. dinoprostone and dinoprost, also are used as uterine stimulants, and cause increased tone and contractions of the body of the pregnant uterus but relaxation of the cervix.
钙通道阻滞药 硫酸镁(magnesium sulfate)
ቤተ መጻሕፍቲ ባይዱ
At parturition, oxytocin causes regular coordinated uterine contractions, each followed by relaxation. The ergotalkaloids, such as ergometrine, causes uterine contractions with an increase in basal tone, are most often used for treatment of postpartum hemorrhage.
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