Objective To evaluate the impact of progesterone level of late follicular phase on outcome of in vitro fertilization in controlled ovarian hyperstimulation.

目的探讨在控制性超排卵中，晚期卵泡期孕酮水平与体外受精结局的关系。

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Hyperstimulation is defined as uterine contractions lasting at least two minutes or five or more uterine contractions in 10 minutes.

过度刺激是宫缩持续至少2分钟或10分钟内宫缩5次或以上。

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Hyperstimulation is characterized by more than five contractions in 10 minutes, contractions lasting 2 minutes or more, or contractions of normal duration occurring within 1 minute of each other.

过度刺激的特点是10分钟内有5次以上宫缩，宫缩持续2分钟或以上，或持续时间正常的宫缩每分钟一次。

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The most dangerous is a condition called ovarian hyperstimulation syndrome, when ovaries become enlarged.

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Ovarian hyperstimulation syndrome develops after you take a type of fertility medication that acts directly on your ovaries, stimulating them to produce multiple eggs.

CNN: Ovarian hyperstimulation syndrome