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To clarify whether openning of the uterine isthmus between 11 and 13weeks' gestation adversely affects the placental development.The uterine cervix and isthmus lengths were measured prospectively using transabdominal ultrasound at 11 to 13+6weeks' gestation. Following delivery, the pregnancy and delivery course were reviewed. The associations between the conditions of the uterine isthmus during the...
The Tei index is a useful, new, noninvasive Doppler index of combined systolic and diastolic function calculated by isovolumic relaxation time plus isovolumic contraction time divided by ejection time. Sick fetuses were evaluated with the Tei index.The study group underwent two-dimensional/Doppler echocardiographic measurement of their Tei index and included 10 monochorionic diamniotic (MD) twin pairs...
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