子宮動脈 PI／RI 理想值：IVF／FET Doppler 報告判讀指南

重點整理

• 平均子宮動脈 PI 約 ≤1.75 可作 FET 中較低血流阻抗的參考，但 2024 年 FET 研究指出，內膜轉化當日 PI 不是良好的單一妊娠結果預測指標；RI 目前也沒有可通用的「理想值」。[1][2]
• PI／RI 要連同檢查時間點、左右或平均值、內膜厚度，以及內膜／內膜下血流一起看；偏低通常是有利線索，不是成功保證。[1][2][3][7]
• 一項 IVF ET 研究中，內膜與內膜下血流同時可見者妊娠率為 47.8%、著床率為 24.2%，高於只有內膜下血流者的 29.7% 和 15.8%。[7]

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來源

• [1] Analysis of the uterine artery pulsatility index on the day ... - PMCpmc.ncbi.nlm.nih.gov

  The receiver operating characteristic (ROC) curve was used to determine the optimal mean PI cutoff value of 1.75. After 1:1 propensity score matching (PSM), 562 patients were included. For statistical description and analysis, the patients were divided into...

• [2] Assessment of changes in utero-ovarian arterial ...pubmed.ncbi.nlm.nih.gov

  To investigate changes in utero-ovarian blood flow during the peri-implantation period and their significance in successful embryo implantation. ... There was no difference in mean endometrial thickness between the two groups before ET, while a thicker endo...

• [3] The correlation of the embryo implantation rate with uterine arterial impedance in in vitro fertilization and embryo transfer - PubMedpubmed.ncbi.nlm.nih.gov

  The influence of uterine blood flow impedance on embryo implantation rate was investigated by transvaginal color Doppler sonography examination before embryo transfer. ... Color flow imaging with blood flow waveform analysis from bilateral uterine arteries...

• [7] Assessment of uterine receptivity by the endometrial– ...ceus.med.br

  Taipei Medical University and Hospital, Taipei, Taiwan Objective: To investigate the correlation of blood flow detected by color Doppler sonography in the endometrial–subendometrial unit with pregnancy outcome of IVF-ET treatments. ... Result(s): The overal...