Antepartum care
Introduction
Pregnancy is a physiological marathon, a profound transformation that affects every body system, every routine, and every emotional horizon. Antepartum care is about far more than prenatal vitamins and ultrasound pictures. It is the deliberate monitoring of two clients at once, anticipating complications before they escalate, supporting healthy fetal development, and guiding families through one of life’s most vulnerable and meaningful transitions.
NCLEX heavily emphasizes antepartum nursing because early detection saves lives. From blood pressure changes to fetal movement, every detail matters.
Learning objectives
By the end of this section, you should be able to:
- Describe normal physiologic changes of pregnancy.
- Identify appropriate prenatal screening, labs, and visit schedules.
- Recognize high-risk conditions and red flags requiring immediate action.
- Perform and interpret fetal well-being assessments (NST, BPP, dopplers).
- Provide appropriate client education and anticipatory guidance.
- Navigate NCLEX priority scenarios around maternal safety, fetal oxygenation, and early intervention.
Prenatal care schedule
Routine prenatal visits follow a structured timeline to detect complications early:
- Every 4 weeks until 28 weeks
- Every 2 weeks from 28–36 weeks
- Weekly from 36 weeks until birth
At each visit, the nurse assesses:
- Maternal weight
- Blood pressure
- Fundal height
- Fetal heart tones
- Fetal movement
- Urine dip (protein, glucose)
- Edema, headaches, visual changes
- Contractions, bleeding, discharge
Prenatal laboratory testing
Initial prenatal labs (first visit)
- CBC
- Blood type & Rh factor
- Antibody screen
- Rubella titer
- Hepatitis B antigen
- HIV
- Syphilis (RPR or VDRL)
- Urine culture
- Pap smear (if due)
- Gonorrhea/chlamydia
- TB testing (if high-risk)
Follow-up testing
-
24–28 weeks:
- 1-hour glucose tolerance test
- CBC to screen for anemia
- Rh-negative clients: administer RhoGAM at 28 weeks
-
35–37 weeks:
- Group B strep (GBS) culture
- //////Caption: Prenatal laboratory testing timeline
- Illustration type: Timeline infographic
- Illustration note: Pregnancy timeline highlighting initial prenatal labs, 24–28 week screening (glucose test, CBC, RhoGAM for Rh-negative clients), 27–36 week Tdap vaccination, and 35–37 week GBS culture.///////
Vaccines
- Inactivated influenza during pregnancy
- Tdap between 27–36 weeks
- NO live vaccines (MMR, varicella): contraindicated due to theoretical risk of viral transmission to the fetus.
Normal physiologic changes in pregnancy
Cardiovascular
- ↑ Blood volume (40–50%) -Natural increase, partly due to fluid retention, partly to increase circulatory volume to accommodate placental circulation
- ↑ Heart rate (10–15 bpm)
- ↓ BP slightly in 2nd trimester
- Physiologic anemia from hemodilution
Respiratory
- ↑ O₂ consumption
- Mild dyspnea is normal
- Elevated diaphragm - due to displacement by the expanding uterus
Gastrointestinal
- Nausea/vomiting
- Constipation (progesterone slows motility)
- Heartburn (reflux)
Renal
- ↑ GFR
- ↑ UTI risk
- Frequency and nocturia
Musculoskeletal
- Lordosis
- Round ligament pain (these ligaments attach the uterus to the abdominal wall)
- Relaxin → A hormone that primarily softens pelvic ligaments to ease/open the birth canal, though it can cause ligament laxity throughout the body
Skin
- Linea nigra (dark vertical line dividing the abdomen)
- Chloasma (facial pigmentation)
- Striae gravidarum (stretch marks)
- //////Caption: Common skin changes during pregnancy
- Illustration type: Medical illustration Illustration note: Pregnant abdomen and face showing linea nigra, striae gravidarum, and chloasma with clear labels illustrating normal pregnancy-related pigmentation changes.///////
Fetal well-being assessments
The provider is able to assess the fetus during the antepartum period in several ways. Each of these assessments allows early warning signs, prompting interventions when necessary.
Fetal movement (kick counts)
- Mom lies left side, counts 10 movements in 2 hours
- Decreased movement → urgent evaluation
Biophysical profile (BPP)
Five components scored 0–2 each:
- Fetal breathing
- Fetal tone
- Fetal movement
- Amniotic fluid volume
- NST result
- Score 8–10 reassuring
- Score ≤4 → possible emergency delivery
Nonstress test (NST)
Assesses fetal heart rate response to movement.
- Reactive NST: 2 accelerations in 20 minutes (good)
- Nonreactive: requires further testing (BPP)
Ultrasound
Used for dating, anatomy, growth, placental location, and fetal presentation.
High-risk pregnancy conditions (NCLEX priority)
Preeclampsia
Characterized by:
- BP ≥140/90 after 20 weeks
- Proteinuria or signs of end-organ damage
Red flags:
- Severe headache
- Visual changes
- Right upper quadrant pain
- Sudden swelling of face/hands
- Hyperreflexia/clonus
Nursing actions:
- Seizure precautions
- Monitor BP & urine protein
- Administer magnesium sulfate if ordered
- Prepare for possible early delivery
Gestational diabetes
Risk factors: obesity, family history, and previous large baby.
Consequences: macrosomia, hypoglycemia in the newborn, and preeclampsia.
Management:
- Monitor glucose frequently
- Dietary modifications
- Possible insulin
- Fetal growth monitoring
Placenta previa
The placenta, rather than adhering to the posterior aspect of the womb, covers the cervical os. Symptoms: painless, bright red bleeding.
Nursing actions:
- NO vaginal exams
- Bed rest
- Plan for C-section
Placental abruption
Premature separation of the placenta. Symptoms: painful bleeding, rigid abdomen, fetal distress.
Nursing actions:
- Emergency intervention
- Prepare for delivery
- Continuous monitoring
- //////Caption: Placenta previa vs placental abruption
- Illustration type: Side-by-side anatomical comparison
- Illustration note: Cross-sectional uterine diagrams comparing placental location in placenta previa versus placental separation in placental abruption, with visual emphasis on painless bright red bleeding versus painful bleeding and uterine rigidity.///////
Preterm labor (<37 weeks)
Signs: contractions + cervical change.
Management:
- Hydration
- Tocolytics (e.g., nifedipine)
- Betamethasone for fetal lung maturity
- GBS prophylaxis if needed
Danger signs requiring immediate evaluation
Nursing interventions
- Monitor maternal vitals and fetal status
- Provide emotional support and reduce anxiety
- Educate on nutrition, hydration, movement, and safety
- Administer RhoGAM, vaccines, medications as ordered
- Teach signs of labor and when to report to provider
- Reinforce kick counts and preterm labor warnings
- Encourage regular prenatal appointments
Clinical vignette: A 29-year-old at 32 weeks calls the clinic reporting “stars in my vision” and a pounding headache. The nurse immediately recognizes possible preeclampsia and instructs her to come to labor and delivery. Upon arrival, her BP is 162/104 and she reports RUQ pain. Rapid intervention prevents seizure and fetal distress.
Client education
- Take prenatal vitamins with folic acid
- Avoid alcohol, smoking, marijuana, and drugs
- Limit caffeine
- Eat balanced diet with iron, protein, and calcium
- Manage nausea with small, frequent meals
- Avoid raw fish, deli meat, unpasteurized cheese
- Perform daily fetal kick counts after 28 weeks
- Recognize red flags and report immediately