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題 名 | Waveforms of the Ductus Venosus Blood Flow in Normal Human Fetuses Aged 8-38 Weeks=8至38週正常人類胎兒靜脈導管的血流速度波形 |
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作 者 | 許德耀; 歐家佑; 張旭陽; 鄭碧華; 陳仁煌; 徐佩華; 蔡文玲; | 書刊名 | 長庚醫學 |
卷 期 | 24:11 2001.11[民90.11] |
頁 次 | 頁717-723 |
分類號 | 417.343 |
關鍵詞 | 靜脈導管; 杜卜勒; 速度波形; 胎兒; Ductus venosus; Doppler; Velocity waveform; Fetus; |
語 文 | 英文(English) |
中文摘要 | 背景:本研究是要建立人類胎兒靜脈導管的杜卜勒血流速度波形,也希望能確立標準測量的技術模式。 方法:本研究是前膽性測量介於8至38週545個胎兒的靜脈導管血流。所有的孕婦在1998至1999年12個月期間皆在高雄長庚醫院產檢,包括幾個靜脈導管的血流動力媒介變數:最大收縮速度(DVP),最大收縮/擴張比例(S/D),時間 – 平均速度(TAMX),心房收縮期間最大速度(DVM),脈動指標(PI),Pourcelot’s阻力指標(RI)及胎兒心跳頻率(FHB)。 結果:總共收集545個案,490個案是可被接受的靜脈導管血流速度波形(佔百分之89.9),其最大收縮速度的平均值(標準差)為0.33[]0.11公尺/秒,時間 – 平均速度0.24[]0.09公尺/秒,心房收縮最大速度為0.15[]0.09公尺/秒,最大收縮/擴張速度比例是2.5[]1.01,脈動指標0.67[]0.21,Pourcelot’s阻力指標0.64[]0.11及胎兒心跳頻率每分為163.3[]18.82次。其中DVP,TAMX,DVM隨著週數有意義地增加,但是PI,RI,S/D及FHB隨著週數而遞減。 結論:針對懷孕期間靜脈導管血流速度波形更進一步的研究,可以讓我們更瞭解正常胎盤的滲透,胎兒靜脈回流至心臟以及相關心臟功能的情況。 |
英文摘要 | Background: We attempted to establish normal Doppler flow velocity waveform patterns in the human fetal ductus venosus (DV), and also to establish a standardized measurement technique. Methods: Ductus venosus blood flow was measured in a prospective study involving 545 fetuses aged between 8 and 38 weeks in utero, the mothers of whom received prenatal care in Kaohsiung Chang Gung Memorial Hospital in a 12-month period in 1998-1999. Several DV hemodynamic parameters were assessed, including peak systolic velocity (DVP), peak systolic/diastolic (S/D) ratio, time-averaged velocity (TAMX), maximum velocity during atrial contraction (DVM), pulsatility index (PI), Pourcelot’s resistance index (RI), and fetal heartbeat (FHB). Results: Technically acceptable ductus venosus blood flow velocity waveform patterns were collected from 490 of 545 pregnant women (89.9%). The mean[]SD value for the peak systolic DV velocity during the time period of 8 to 38 weeks in utero was 0.33[]0.11 meters/sec (m/s), the TAMX being 0.24[]0.09 m/s. The maximum velocity during atrial contraction was 0.15[]0.09 m/s, and the peak S/D velocity ratio was 2.5[]1.01. The PI, Pourcelot’s RI and fetal heart beat were, 0.67([]0.21), 0.64 ([]0.11), and 163.3 ([]18.82 bpm), respectively. Significant increases in DVP, TAMX, and DVM with advancing gestational age were established, and decreases in PI, RI, S/D, and FHB with advancing gestational age were also observed. Conclusions: Further investigation of DV hemodynamics throughout pregnancy may enable a greater understanding of normal placental perfusion, the fetal venous return to the heart and associated cardiac function. |
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