Prospective assessment of piacental cord insertion in twin gestation

TY - JOUR

T1 - Prospective assessment of piacental cord insertion in twin gestation

AU - Westover, T.

AU - Perry, R.

AU - Dinh, T.

AU - Fischer, R.

PY - 1997

Y1 - 1997

N2 - OBJECTIVE: Twin gestations have a higher incidence of abnormal placental cord insertion (defined as marginal or velamentous insertion) than singletons. The ability of grey scale and color Doppler sonography to detect these abnormal insertion types has not been adequately tested. The purpose of this study is to prospectively determine the accuracy of color Doppler and grey scale imaging in the detection of abnormal placental cord insertion in twin gestation. STUDY DESIGN: During a 16-month period, 80 twin pregnancies wore prospectively evaluated with Gray scale and color Doppler imaging to determine the site of placental cord insertion for each twin. Cord insertion was defined as eccentric, marginal, or velamentous. Each pregnancy was only evaluated once. All placentas were evaluated pathologically after delivery and the true type of cord insertion documented. The percentage of successfully visualized cord insertions and the accuracy of the prenatal characterization was compared across three gestational age cohorts. Chi square was used to assess significance. RESULTS: Thirty-one pregnancies have delivered to date with pathologic data. <24 weeks 24-30 weeks >30 weeks P value Successful 14/14 6/8 2/9 .001 visualization of both cords Correct prediction 28/28 11/13 9/10 NS of insertion type (if insertion seen) CONCLUSION: Our ability to visualize two placental tord insertions in twin pregnancy dropped significantly as gestational age advanced. If the cord insertion was seen sonographically, we demonstrated a high predictive value for insertion type regardless of gestational age.

AB - OBJECTIVE: Twin gestations have a higher incidence of abnormal placental cord insertion (defined as marginal or velamentous insertion) than singletons. The ability of grey scale and color Doppler sonography to detect these abnormal insertion types has not been adequately tested. The purpose of this study is to prospectively determine the accuracy of color Doppler and grey scale imaging in the detection of abnormal placental cord insertion in twin gestation. STUDY DESIGN: During a 16-month period, 80 twin pregnancies wore prospectively evaluated with Gray scale and color Doppler imaging to determine the site of placental cord insertion for each twin. Cord insertion was defined as eccentric, marginal, or velamentous. Each pregnancy was only evaluated once. All placentas were evaluated pathologically after delivery and the true type of cord insertion documented. The percentage of successfully visualized cord insertions and the accuracy of the prenatal characterization was compared across three gestational age cohorts. Chi square was used to assess significance. RESULTS: Thirty-one pregnancies have delivered to date with pathologic data. <24 weeks 24-30 weeks >30 weeks P value Successful 14/14 6/8 2/9 .001 visualization of both cords Correct prediction 28/28 11/13 9/10 NS of insertion type (if insertion seen) CONCLUSION: Our ability to visualize two placental tord insertions in twin pregnancy dropped significantly as gestational age advanced. If the cord insertion was seen sonographically, we demonstrated a high predictive value for insertion type regardless of gestational age.

UR - https://www.scopus.com/pages/publications/33748611897

UR - https://www.scopus.com/pages/publications/33748611897#tab=citedBy

M3 - Article

SN - 0001-5563

VL - 176

SP - S74

JO - Acta Diabetologica Latina

JF - Acta Diabetologica Latina

IS - 1 PART II

ER -