Magann Everett F, Doherty Dorota A, Chauhan Suneet P, Busch Friedrich W J, Mecacci Federico, Morrison John C
Department of Obstetrics and Gynecology, University of Western Australia, Perth, Australia.
Am J Obstet Gynecol. 2004 Jan;190(1):164-9. doi: 10.1016/s0002-9378(03)00859-7.
This study was undertaken to determine whether the amniotic fluid index (AFI) and single deepest pocket percentiles can reliably identify a dye-determined amniotic fluid volume.
Ultrasound measurements and dye-determined volumes were prospectively collected. Oligohydramnios predictors included AFI and single deepest pocket below the 3rd and 5th percentiles, and hydramnios predictors were based on AFI and single deepest pocket above the 95th and 97th percentiles.
Two hundred ninety-one women with singleton pregnancies participated, including 75 pregnancies (26%) with oligohydramnios and 31 pregnancies (10%) with hydramnios. The predictive ability of the AFI and single deepest pocket indices (<3rd and 5th percentiles) to identify oligohydramnios was between 11% and 27% and to identify hydramnios (>95th and 97th percentiles) ranged between 33% and 46%. The best prediction was for normal fluid volume with an accuracy of 83% to 94%.
Amniotic fluid indices perform best for the identifying normal AF volumes, whereas the identification of oligohydramnios or hydramnios is poor.
本研究旨在确定羊水指数（AFI）和单一最深羊水池百分位数能否可靠地识别染料测定的羊水量。
前瞻性收集超声测量值和染料测定的羊水量。羊水过少的预测指标包括AFI和低于第3和第5百分位数的单一最深羊水池，羊水过多的预测指标基于AFI和高于第95和第97百分位数的单一最深羊水池。
291名单胎妊娠女性参与研究，其中75例（26%）为羊水过少妊娠，31例（10%）为羊水过多妊娠。AFI和单一最深羊水池指数（<第3和第5百分位数）识别羊水过少的预测能力在11%至27%之间，识别羊水过多（>第95和第97百分位数）的预测能力在33%至46%之间。对正常羊水量的预测最佳，准确率为83%至94%。
羊水指数在识别正常羊水量方面表现最佳，而识别羊水过少或羊水过多的能力较差。
