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THE PREDICTION OF DELIVERY DATE BY ULTRASONIC MEASUREMENT OF FETAL CROWN‐RUMP LENGTH
Author(s) -
Drumm J. E.
Publication year - 1977
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1977.tb12457.x
Subject(s) - crown rump length , biparietal diameter , rump , medicine , obstetrics , pregnancy , ultrasound , ultrasonic sensor , fetus , gynecology , gestational age , anatomy , biology , radiology , first trimester , head circumference , genetics
Summary The ultrasonic measurement of the fetal crown‐rump length (CRL) in early pregnancy was utilized to predict the date of delivery in 220 patients with reliable menstrual histories and in 186 patients with unreliable menstrual dates who began labour spontaneously. Ninety‐five per cent and 96·2 per cent respectively were delivered within 12 days of the predicted date. The CRL was found to be better than biparietal diameter measurements (p<0·001) and as good as a reliable menstrual history (p<0·5) in predicting the time of spontaneous onset of labour.