Approximately 10 percent of all pregnancies continue to 42 weeks’gestation. The true prevalence of pregnancies lasting longer than 41 or 42 weeks’gestation has been difficult to establish because many such diagnoses occur as a result of an inability to accurately establish time of conception. Several studies indicate that menstrual dating is often inaccurate and can lead to induction of labor for a presumed but inaccurate diagnosis of postterm pregnancy. It is now widely accepted that a more precise method of determining gestational age is the first trimester measurement of crown-rump length of the fetus. We carried out a cross- sectional study on patients who were referred for a prenatal care to Arash hospital.
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.