Back to the full page

The antenatal contact: the essentials

Participant handout · WHO antenatal care · gpreasoning.uk/global

Reasoning GP
Global Primary Care

Eight contacts

  • First: up to 12 weeks.
  • Then: 20, 26, 30, 34, 36, 38, 40 weeks.
  • Not delivered by 41 weeks: come back.
  • One ultrasound before 24 weeks.

First contact tests

  • Hb (haemoglobinometer if no laboratory).
  • HIV and syphilis.
  • Urine for bacteriuria: culture or Gram stain.
  • BP, weight, pallor, fundal height.

Preventive package

WhatDose
Iron + folic acid30 to 60 mg + 0.4 mg daily
Calcium (low intake)1.5 to 2.0 g daily, apart from iron
IPTp-SP (endemic Africa)From 13 weeks, at least 1 month apart, 3 or more
Tetanus vaccineBy previous doses (2 if none)
DewormingAfter first trimester, if endemic

BP checklist (skills station)

  • Rested, seated, right cuff
  • Repeat if 140/90 or more
  • Urine protein if 140/90 or more
  • Ask about headache, vision, abdominal pain

Hypertension in pregnancy

Finding (after 20 weeks)Classify
140 to 159 / 90 to 109, no proteinGestational hypertension
As above + protein 2+Pre-eclampsia
160/110 or more, or severe symptomsSevere pre-eclampsia
ConvulsionsEclampsia

Magnesium sulfate loading dose

  • 4 g of 20% IV over 5 minutes.
  • Then 10 g of 50% deep IM: 5 g each buttock.
  • Cannot continue? Transfer now.
  • Antidote: calcium gluconate 1 g IV slowly.

Anaemia

  • Hb below 110 g/L (105 in second trimester).
  • Severe: below 70 g/L or breathless with pallor: refer.
  • Treat: iron 120 mg daily + folic acid 0.4 mg.

Say it simply

Come at once, day or night, if you bleed, have a fit, a bad headache with blurred vision, fever and weakness, bad belly pain, or trouble breathing.

Sources

World Health Organization. WHO recommendations on antenatal care for a positive pregnancy experience. 2016. World Health Organization. WHO recommendations for prevention and treatment of pre-eclampsia and eclampsia. 2011. World Health Organization. Managing complications in pregnancy and childbirth: a guide for midwives and doctors, 2nd edition. 2017. World Health Organization. Guideline on haemoglobin cutoffs to define anaemia in individuals and populations. 2024. World Health Organization. Pregnancy, childbirth, postpartum and newborn care: a guide for essential practice, 3rd edition. 2015.
Adapted from WHO guidance; not endorsed by WHO. This page paraphrases and adapts the WHO publications listed under Sources, which are licensed CC BY-NC-SA 3.0 IGO; the adapted text is shared under the same licence for non-commercial education. Reasoning GP is not affiliated with WHO or any other organisation named here. Use it alongside your national guidelines, essential medicines list and formulary, and your clinical judgement. Doses are given only where they come from a WHO source; otherwise follow your national guideline or formulary.