- Introduction
- E-tutor profile
- Preliminary reading
- Introductory self-assessments
- Early pregnancy anomaly scanning
- Central nervous system anomalies
- Heart defects
- Medial body wall defects
- Genitourinary anomalies
- Fetal gender
- Gastrointestinal anomalies
- Musculoskeletal anomalies
- Facial anomalies
- Markers of abnormalities
- Key points
- Final assessment
Introduction to anomaly scanning in early pregnancy and congenital malformations
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Anomaly scanning is routinely performed in the second trimester. The RCOG recommends a gestational age of 18–22 weeks for a routine anomaly scan; however, with recent advances in ultrasound technology it has become possible to image the growing fetus at earlier gestations with surprising clarity.
As with any field of clinical medicine, a sound knowledge and familiarity with the 'normal' is essential to recognise the 'abnormal'. There is also a need to critically evaluate the role and cost effectiveness of newer technology, preferably before it is introduced into wider practice. In this chapter, we shall examine the important aspects of early pregnancy anomaly scanning.
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Learning objectives When you have completed this chapter you will be able to:
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