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Quickening
In pregnancy terms, quickening is the moment in pregnancy when the pregnant woman starts to feel or perceive fetal movements in the uterus.〔(Quickening in Farlex dictionary ), in turn citing The American Heritage Dictionary of the English Language, Fourth Edition. copyright 2000〕
==Medical facts==
The first natural sensation of quickening may feel like a light tapping, or the fluttering of a butterfly. These sensations eventually become stronger and more regular as the pregnancy progresses. Sometimes, the first movements are mis-attributed to gas or hunger pangs.〔Harms, Roger. ''(Mayo Clinic Guide to a Healthy Pregnancy )'', page 480 (HarperCollins 2004). Retrieved 2007-02-15.〕
A woman’s uterine muscles, rather than her abdominal muscles, are first to sense fetal motion. Therefore, a woman’s body weight usually does not have a substantial effect on when movements are initially perceived. Women who have already given birth have more relaxed uterine muscles that are consequently more sensitive to fetal motion, and for them fetal motion can sometimes be felt as early as 14 weeks.〔Van Der Ziel, Cornelia & Tourville, Jacqueline. ''(Big, Beautiful & Pregnant: Expert Advice And Comforting Wisdom for the Expecting Plus-size Woman )'' (Marlowe 2006). Retrieved 2007-02-15.〕
Usually, quickening occurs naturally at about the middle of a pregnancy. A woman pregnant for the first time (i.e., a primigravida woman) typically feels fetal movements at about 18–20 weeks, whereas a woman who has been pregnant more than once (i.e., a multipara woman) will typically feel movements around 15–17 weeks.〔Levene, Malcolm et al. ''(Essentials of Neonatal Medicine )'' (Blackwell 2000), page 8. Retrieved 2007-02-15.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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