Abstract
This study was aimed to establish reference values of cervical length in normal pregnancy. We studied a cross-sectional sample of 144 pregnant women by transabdominal sonography. The inclusion criteria were sonographic confirmation of gestational age, the absence of any risk factors for preterm birth, and uncomplicated pregnancy. Cervical length was measured in a straight line. Height, age and weight of patients were also obtained. There was a relationship between gestational age and cervical length, which could be described with a linear regression (R = 0.44; P Keywords : Transabdominal sonography; cervical length; normal pregnancy; gestational age Internet Journal of Medical Update Vol. 4 (1) 2009: pp. 19-24
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