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題名 | Doppler Study of the Fetal Middle Cerebral Artery at Three Locations: Preliminary Report=偵測三個不同位置之胎兒中大腦動脈的杜普勒研究:初步報告 |
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作者 | 張其真; 謝耀元; 蔡鴻德; Chang, Chi-chen; Hsieh, Yao-yuan; Tsai, Horng-der; |
期刊 | 長庚醫學 |
出版日期 | 20010700 |
卷期 | 24:7 2001.07[民90.07] |
頁次 | 頁418-422 |
分類號 | 417.343 |
語文 | eng |
關鍵詞 | 杜普勒; 胎兒中大腦動脈; 脈動係數; 阻力係數; Doppler; Fetal middle cerebral artery; Pulsatility index; Resistance index; |
英文摘要 | BACKGROUND: Middle cerebral artery (MCA) detection is useful in monitoring fetal well-being. Knowledge of Doppler flow velocity of the fetal MCA may assist in prenatal diagnosis and management of complicated pregnancies. The aim of this study was to compare the pulsatility index (PI) and resistance index (RI) of the MCA at different locations throughout pregnancy. METHODS: Uncomplicated singleton pregnancies accepted Doppler surveys of the bilateral MCA. PI and RI values of the proximal, middle, and distal 1/3 of the MCA were measured. The gestation periods for Doppler surveys were (1) 15 to 19 weeks; (2) 20 to 24 weeks; (3) 25 to 29 weeks; (4) 30 to 34 weeks; and (5) 35 to 40 weeks. The MCA flows at different locations and at different gestational aged were compared. RESULTS: There were 21 patients included. Average PI/RI values of the proximal, middle and distal MCA were 1.62/0.80, 1.69/0.81, and 1.71/0.83, which were non-significantly different. The PI/RI values of MCA in each gestational phase were also non-significantly different: (1) 1.70/0.84; (2) 1.72/0.82; (3) .68/0.83; (4) 1.65/0.81; (5) 1.62/0.77. CONCLUSIONS: The PI and RI values of the proximal MCA were non-significantly lower than those of middle and distal MCA. Middle MCA could represent three locations of MCA. A trend of lower PI/RI values with advancing gestation was noted. |
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