摘要：Objective:We longitudinally exam.ned the changes of brachial to ankle distensibility using pulse wave velocity (PWV)-throughout pregnancy and its difference between norm.l pregnancy and pregnancy-induced hypertension (PIH) groups. Study design:One hundred and eighty-three pregnant wom.n were included in this study. The PWV exam.nations were perform.d in a longitudinal way during the first,second,and third trim.sters of pregnancy,and im.ediately and 1 m.nth after delivery. Results:In norm.l pregnancies,the PWV significantly decreased at the second trim.ster,increased from.the third trim.ster through im.ediately after delivery,and decreased again at 1 m.nth after delivery. In PIH patients,it increased in proportion to the progression of gestation. Conclusion:We m.nitored the longitudinal changes in PWV and constructed a PWV norm.gram.during pregnancy. The predictive value of PWV and blood pressure for PIH was higher than that of blood pressure alone,suggesting the usefulness of m.asuring PWV to predict PIH.