π©Ί Expert Course: Antenatal Care
Course Overview
This expert module provides an in-depth understanding of antenatal care (ANC) β its goals, clinical practice standards, recommended interventions, and management of special situations in pregnancy. The course is designed for clinicians, midwives, and advanced medical students seeking mastery in maternal and fetal health optimization during pregnancy.
Learning Objectives
By the end of this module, learners should be able to:
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Explain the goals and components of antenatal care.
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Describe the recommended schedule and conduct of antenatal visits.
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Outline the key clinical assessments and investigations at each visit.
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Prescribe appropriate preventive and therapeutic medications during pregnancy.
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Identify special considerations for patients with a bad obstetric history (BOH).
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Implement evidence-based ANC protocols to reduce maternal and perinatal morbidity and mortality.
Introduction to Antenatal Care
Definition
Antenatal Care (ANC) refers to the routine health supervision of pregnant women from conception to delivery, aimed at ensuring the best possible health outcomes for both the mother and baby.
Goals of Antenatal Care
| Goal | Description |
|---|---|
| Early Detection & Management | Identify and treat maternal and fetal complications such as proteinuria, hypertension, syphilis, malpresentation, IUGR, and congenital abnormalities. |
| Prevention of Complications | Prevent malaria, anemia, and neonatal tetanus through prophylaxis and immunization. |
| Birth Preparedness & Complication Readiness | Establish a Birth Plan β decide place of delivery, transport, emergency contacts, and blood donors. |
| Health Promotion & Education | Provide counselling, health education, iron, folate, calcium, iodine, and multiple micronutrient supplementation (MMS). Promote use of insecticide-treated nets (ITNs). |
Schedule and Conduct of Antenatal Visits
WHO-Recommended 8-Contact Schedule
| Trimester | Contact Weeks | Key Actions |
|---|---|---|
| 1st Trimester | Up to 12 weeks | Booking visit β full evaluation, investigations, and treatment initiation |
| 2nd Trimester | 20, 26 weeks | Growth monitoring, anomaly scan (18β21 weeks), ongoing prophylaxis |
| 3rd Trimester | 30, 34, 36, 38, 40 weeks | Fetal wellbeing, maternal status, birth plan, repeat HIV test, delivery preparedness |
Note: If not delivered by 40 weeks, review for delivery or induction.
Initial (Booking) Visit
History Taking
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General, obstetric, and gynecologic history
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Past medical/surgical history
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Family and social history
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Presenting complaints
Physical Examination
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General: Vitals, pallor, edema, breast examination
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Obstetric: Fundal height (HOF), lie, presentation, descent, fetal heart rate (FHR)
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Urinalysis: Protein, glucose, infection screen
Investigations
| Routine | Special (for BOH) |
|---|---|
| Pregnancy test | Transvaginal ultrasound for cervical length |
| Full Blood Count (Hb) | Antiphospholipid antibody screen (LAC, ACL, Ξ²2GP) |
| Blood group and Rhesus factor | Factor V Leiden mutation |
| HIV, RPR, Hepatitis B surface antigen | Protein C & S levels |
| Random Blood Sugar (RBS) | TORCH screen (IgG, IgM) |
| Early dating ultrasound | β |
Treatment & Prophylaxis
Routine Medications
| Drug | Dose & Duration | Purpose |
|---|---|---|
| Iron (elemental) | 30β60 mg daily | Prevent anemia |
| Folic Acid | 400 mcg (0.4 mg) daily | Prevent neural tube defects |
| Vitamin C | 100 mg daily | Enhances iron absorption |
| Mebendazole | 500 mg stat (2nd trimester) | Deworming |
| Malaria prophylaxis (IPT-SP) | 3 tabs (500/25 mg SP) β₯13 weeks; up to 6 doses, β₯1 month apart | Prevent malaria in pregnancy |
| Tetanus prophylaxis (ATT) | 0.5 ml IM at booking, repeat per protocol | Prevent neonatal tetanus |
| MMS (Multiple Micronutrient Supplement) | 1 daily | Nutritional supplementation |
β οΈ Avoid SP if on Co-trimoxazole prophylaxis.
Special Medications for BOH
| Drug | Dose & Duration | Indication |
|---|---|---|
| Low-dose Aspirin | 75β150 mg daily (12β36 weeks) | Prevent preeclampsia |
| Calcium | 500 mgβ1 g daily | Reduce risk of hypertension |
| Micronised Progesterone | 200 mg daily up to 20 weeks | Prevent preterm loss |
| Cerclage | Between 13β16 weeks | Cervical incompetence |
Other Medications (As Indicated)
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Corticosteroids (for lung maturity)
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Anti-emetics
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Antacids
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Antibiotics/antifungals
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Antihypertensives
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Insulin (for diabetes)
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Vitamin B complex
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Analgesics
Anti-D Immunoglobulin
| Gestational Period | Dose & Indication |
|---|---|
| <12 weeks (miscarriage, ectopic, MTP) | 250 IU (50 mcg) |
| >12 weeks | 1500 IU (300 mcg) at 28 weeks or 500 IU (100 mcg) at 28 & 34 weeks |
| Post-delivery (within 72 hrs) | 1500 IU (300 mcg) standard dose |
| If large fetomaternal hemorrhage: Perform KleihauerβBetke test for dose adjustment. | Β |
Subsequent Visits
At each visit:
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Take detailed interval history and presenting complaints.
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Assess fetal growth and movement.
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Evaluate maternal wellbeing and review medications.
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Check fetal presentation, lie, and engagement.
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Repeat FBC, HIV test, and ultrasound (as appropriate).
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Reinforce birth preparedness and discuss danger signs.
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Continue malaria prophylaxis and micronutrient supplementation.
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HIV-positive mothers: Repeat viral load at 36 weeks.
Birth Preparedness and Danger Signs
Birth Preparedness Plan
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Decide on place of delivery
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Arrange transport and emergency contacts
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Identify blood donors
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Prepare delivery supplies
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Save funds for emergencies
Danger Signs
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Vaginal bleeding
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Severe headache, blurred vision
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Swelling of face/hands
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Severe abdominal pain
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Reduced fetal movement
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Fever or chills
Mind Map: Antenatal Care Overview
Antenatal Care
βββ Goals
β βββ Early detection
β βββ Prevention
β βββ Birth preparedness
β βββ Health promotion
βββ Schedule (8 contacts)
β βββ 1st Trimester: Booking
β βββ 2nd Trimester: Growth & Scan
β βββ 3rd Trimester: Monitoring & Plan
βββ Investigations
β βββ Routine
β βββ Special (BOH)
βββ Treatment
β βββ Routine meds
β βββ Special meds (BOH)
β βββ Anti-D
βββ Visits
βββ History
βββ Examination
βββ Counselling
βββ Warning signs
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Recommended References
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WHO (2020): Recommendations on Antenatal Care for a Positive Pregnancy Experience
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Zambian Ministry of Health: Safe Motherhood Guidelines
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Cunningham FG et al. Williams Obstetrics, 27th Edition
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NICE Guidelines NG201: Antenatal Care (2021)
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