What do systematic reviews say?

First trimester routine vs selective ultrasound

First trimester routine probably leads to lower maternal anxiety3 compared with selective ultrasound (moderate certainty).

• Routine ultrasound for fetal assessment before 24 weeks' gestation 2021 · Cochrane Headline outcomes only
  RR 0.8 [0.65, 0.99]
  1 study · 634 participants
  Moderate

First trimester routine vs selective ultrasound

First trimester routine showed no clear difference in perinatal loss compared with selective ultrasound (low certainty).

• Routine ultrasound for fetal assessment before 24 weeks' gestation 2021 · Cochrane Headline outcomes only
  RR 0.97 [0.55, 1.73]
  1 study · 648 participants
  Low

First trimester routine vs selective ultrasound

First trimester routine showed no clear difference in induction of labour for post‐maturity compared with selective ultrasound (low certainty).

• Routine ultrasound for fetal assessment before 24 weeks' gestation 2021 · Cochrane Headline outcomes only
  RR 0.83 [0.5, 1.37]
  3 studies · 1474 participants
  Low

First trimester routine vs selective ultrasound

• Routine ultrasound for fetal assessment before 24 weeks' gestation 2021 · Cochrane Headline outcomes only
  no estimate extracted
  0 studies · 0 participants
  GRADE not reported

First trimester routine vs selective ultrasound

• Routine ultrasound for fetal assessment before 24 weeks' gestation 2021 · Cochrane Headline outcomes only
  no estimate extracted
  0 studies · 0 participants
  GRADE not reported