The new standardized six-step approach to the focused basic obstetric ultrasound examination can be performed successfully and accurately between 18(+0) and 36(+6) weeks of gestation. This standardized approach can be of significant benefit to limited resource settings and in point of care obstetric ultrasound applications.
Objectives To investigate changes in the cardiac axis (CAx) within the cardiac cycle of normal fetuses and fetuses with congenital heart defects (CHD).
Methods
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