This is an open access article distributed under the Creative Commons Attribution Licensewhich permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Accurate determination of gestational age underpins good obstetric care. The Monash Chart, but none of the existing charts, accurately determined gestational age among an independent IVF twin cohort twin pairs. We conclude that commonly used ultrasound reference charts have inaccuracies.
This article is available to subscribers. Determining the viability of a pregnancy is a major challenge, especially with a pregnancy of unknown location. This review provides specific guidance, including stringent criteria for nonviability, that can reduce the risk of inadvertent harm to a potentially normal pregnancy. Benson reports receiving fees for expert testimony in medical malpractice cases regarding standard of care for interpretation of ultrasonographic examinations and lecture fees from the International Institute for Continuing Medical Education and the Institute for Advanced Medical Education. Doubilet reports receiving fees for expert testimony in medical malpractice cases regarding standard of care for interpretation of ultrasonographic examinations and lecture fees from the International Institute for Continuing Medical Education. Filly reports receiving fees for expert testimony in medical malpractice cases as an expert in diagnostic sonography and lecture fees from World Class CME.
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Ultrasound has become the essential tool of modern obstetric practice. With advances in technology and computer processing, what was once a mere curiosity has become crucial for the assessment of the placenta, membranes, fluid, and fetal anatomy, as is covered in the other portions of this text. The assignment of pregnancy age is the first task placed before the care provider, and ultrasound is the key modality used for this purpose. Additionally, ultrasound is far superior to the clinical examination for determining adequacy of interval fetal growth. With the development of Doppler technology, one can now assess fetal status to determine pathology earlier than as evidenced by abnormal fetal cardiotocography CTG. As a result, Doppler ultrasound has become crucial for making management decisions in some high risk settings. The methods for dating a pregnancy, measuring growth, and assessing fetal status using Doppler technology are covered in this chapter. Sonography provides an enormous amount of useful information to the practicing obstetrician. Arguably, the single most useful piece of information that obstetric sonography provides is an accurate determination of menstrual age.
History of the developments of Ultrasound in Obstetrics and Gynecology This is must-read for medical professionals and history buffs News and Views on the latest in Ultrasound scans in pregnancy from the major News sources on the Internet And take a look at Great reading and helpful information on Obstetric Ultrasound: American Institute of Ultrasound in Medicine. International Society of Ultrasound in Obstetrics and Gynecology. Ultrasound in obstetrics and gynecology:.
All calculations must be confirmed before use. The suggested results are not a substitute for clinical judgment. The SFH in centimeters should be equal to the gestational age in weeks. We cannot therefore recommended any change of current practice. Further trials are needed. Prenatally the sonographically estimated fetal weight is used together with weight tables to evaluate fetal growth.