Table 2.

Routine recommendations for foetal surveillance in preeclampsia without severe features.

Guideline	Cardiotocograph	Biophysical Profile	Amniotic Fluid Volume	Umbilical Artery Doppler	Ultrasound for Foetal Growth
NICE (United Kingdom) † [3]	At diagnosis. If normal, do not routinely repeat unless indicated.	Not recommended	At diagnosis and every two weeks.	At diagnosis and every two weeks.	At diagnosis and every two weeks.
SOMANZ (Australia and New Zealand) * [43]	Twice weekly or more frequently if indicated.	Not recommended	At diagnosis and every two to three weeks.	At diagnosis and every two to three weeks.	At diagnosis and every two to three weeks.
ACOG (United States of America) [44,84]	At diagnosis, then twice weekly.	If CTG is non-reactive.	At diagnosis, then at least once weekly.	Adjunct if there is evidence of foetal growth restriction.	At diagnosis and every three to four weeks.
SOGC (Canada) [64]	Recommended, however timing not specified.	Not recommended	Recommended, however timing not specified.	Recommended, however timing not specified.	Recommended. Timing not specified.

NICE, National Institute for Health and Care Excellence; SOMANZ, Society of Obstetric Medicine of Australia and New Zealand; ACOG, The American College of Obstetricians and Gynecologists; and SOGC, Society of Obstetricians and Gynaecologists of Canada. ^† Subsequent surveillance and monitoring depending on scan findings. * These recommendations are suggested as a commonly used guideline. Individual units are advised to develop their own protocols.