Guideline update: Systematic fetal cardiac ultrasound during the first trimester

Fetal cardiac evaluation in the first trimester should be evaluated systematically: 1st. Heart rate. 2nd. Situs. 3rd. Cardiac axis. 4th. 4 chamber view. 5th. Outflow tract. Although its mandatory visualization is a matter of controversy and would bring us closer to a maximum protocol, current technology allows it in most cases, either directly or indirectly thanks to the three-vessel view and facilitated by the systematic use of the Color Doppler. There is evidence of its importance in contributing to increasing detection rate. We must recommend attempting its systematic evaluation, although it is difficult to consider it mandatory.