Pregnancy Assessment — NCLEX Nursing Lesson Maternity / OB Nursing · RN Track · Maternal-Newborn · Prenatal Care · Pregnancy Assessment Assessment Lesson · NCLEX-PN / NCLEX-RN

Assessing two patients at once—how to calculate a due date, measure fundal height, find the baby with Leopold's, read the fetal heart rate, and catch the danger signs that mean act now.

In this lesson

Learning Objectives
Why Assessment Matters
Health History
Inspection
Palpation
Percussion
Auscultation
Assessment Tools
Focused Assessment
Red Flag Findings
Documentation
Clinical Judgment
NCLEX High-Yield Review
Memory Aids
Case Study
Practice Questions
Key Takeaways
References

Learning Objectives

Collect a complete prenatal history—GTPAL, LMP, and estimated due date (Naegele's rule)—and explain why each question matters.
Perform the physical assessment: fundal height, Leopold's maneuvers, fetal heart rate, deep tendon reflexes, edema, and weight.
Differentiate expected from abnormal findings and interpret fetal heart-rate patterns (accelerations vs. decelerations).
Identify red-flag findings that require immediate action (bleeding, severe headache/visual changes, decreased fetal movement, rupture of membranes, and preterm labor).
Use the NCSBN Clinical Judgment model to recognize cues, prioritize, and act—and answer NCLEX-style items.

Why Assessment Matters

Patient safety: the nurse is assessing two patients—the mother and the fetus. Prenatal assessment catches high-stakes problems early—preeclampsia, bleeding (previa/abruptio), gestational diabetes, fetal growth problems, and fetal distress—when intervention can save lives.

Early recognition: many complications begin with subtle changes—a rising blood pressure, a fundal height that doesn't match dates, decreased fetal movement, or a change in the fetal heart rate. Regular assessment spots these first.

Prevention of complications: recognizing preeclampsia warning signs, abnormal fetal heart-rate patterns, and danger signs and acting quickly prevents seizures, stillbirth, and hemorrhage.

Clinical judgment: the nurse integrates history, physical findings, fetal monitoring, and lab data to decide what's expected, what's abnormal, and what needs immediate action for both patients.

Connecting to A&P Recall the maternal adaptations (increased blood volume, BP dip mid-pregnancy, left-lateral positioning) and that the placenta oxygenates the fetus. Assessment checks whether the mother is adapting normally and the fetus is well-oxygenated—BP and reflexes (preeclampsia), fundal height (growth), and fetal heart rate/movement (well-being).

Health History

Component	What to ask & WHY it matters
Chief complaint	Why the visit—routine prenatal, bleeding, contractions, decreased fetal movement, leaking fluid, or symptoms. Frames the assessment.
Menstrual/obstetric history	Last menstrual period (LMP) to calculate the estimated due date (Naegele's rule), plus GTPAL (Gravida, Term, Preterm, Abortions/losses, Living)—establishes dates and risk.
History of present pregnancy	Fetal movement, weight gain, symptoms (nausea, swelling, headaches), and any bleeding/contractions/leaking—tracks progress and danger signs.
Past medical/OB history	Hypertension, diabetes, prior preeclampsia/preterm birth/cesarean, and pregnancy losses—shape current risk.
Medications	Prescription/OTC/herbal use and prenatal vitamins/folic acid; screen for teratogens (e.g., ACE inhibitors, certain drugs).
Family history	Genetic conditions, diabetes, hypertension, and multiple gestation—guide screening.
Social history	Smoking, alcohol, and substance use (fetal harm), nutrition, support, and safety (intimate partner violence)—major modifiable risks.
Review of systems	Headaches/visual changes (preeclampsia), swelling, urinary symptoms (UTI), bleeding, contractions, and fetal movement—screen for complications.

NCLEX pearl — GTPAL & Naegele's rule GTPAL: Gravida (total pregnancies), Term births, Preterm births, Abortions/miscarriages, Living children. Naegele's rule for the due date: LMP − 3 months + 7 days (then adjust the year). These are frequently tested calculations.

Inspection

What the nurse observes: general appearance, skin (chloasma, linea nigra, striae), edema (face/hands vs. dependent), the abdomen (size for dates, fetal movement), and any bleeding or leaking fluid.

Observation	Normal findings	Abnormal findings & significance
Skin	Linea nigra, chloasma ("mask of pregnancy"), striae (stretch marks)—normal hormonal changes	Jaundice, petechiae/bruising (bleeding disorder/HELLP), or severe itching (cholestasis)
Edema	Mild dependent edema (ankles/feet), especially late in the day	Facial/periorbital or sudden hand edema → preeclampsia (not just gravity)
Abdomen	Enlarging consistent with gestation; visible/felt fetal movement	Size too large or too small for dates (growth issues, multiples, fluid problems)
Vaginal	No bleeding; possible increased normal discharge	Any bleeding (previa/abruptio), or fluid leaking (rupture of membranes)

Why facial/hand edema is different from ankle swelling Dependent (ankle/foot) edema is normal in pregnancy (gravity + fluid). But sudden swelling of the face and hands—especially with a headache or high BP—suggests preeclampsia (fluid shifting due to vascular changes). This distinction is frequently tested: report facial/hand edema, not just ankle swelling.

Palpation

Technique: palpate the fundal height (McDonald's measurement—top of the uterus to the pubic symphysis), perform Leopold's maneuvers (systematic abdominal palpation to determine fetal lie, presentation, and position), assess deep tendon reflexes and clonus (preeclampsia), and check edema. Have the client empty the bladder and lie with a slight left tilt.

Finding	Normal	Abnormal & nursing implications
Fundal height	After ~20 weeks, fundal height (cm) ≈ weeks of gestation (±2)	Measurement >4 cm off → growth problem, multiples, fluid abnormality, or dating error
Leopold's maneuvers	Determine fetal lie, presentation (cephalic/breech), and position	Breech/transverse lie → may need repositioning/cesarean; locates the best spot for the fetal heart rate
Deep tendon reflexes/clonus	2+ (normal)	Hyperreflexia (3–4+) and clonus → preeclampsia/impending seizure; absent reflexes → magnesium toxicity
Uterine contractions (palpation)	Braxton Hicks (irregular, painless) late in pregnancy	Regular, painful contractions before term → preterm labor

Safety — reflexes tell you about preeclampsia and magnesium Deep tendon reflexes are a key preeclampsia assessment: hyperreflexia (brisk 3–4+) with clonus signals CNS irritability and an impending seizure. But if the client is on magnesium sulfate and the reflexes become absent (with a low respiratory rate and urine output), that's magnesium toxicity—hold the drug and give calcium gluconate.

Percussion

Purpose: percussion is limited in pregnancy assessment. The main percussion-based skill is eliciting deep tendon reflexes with a reflex hammer (a key preeclampsia assessment); the abdomen isn't routinely percussed.

	Expected findings	Abnormal findings
Deep tendon reflexes (reflex hammer)	2+ (normal, symmetric)	Hyperreflexia/clonus (preeclampsia) or absent (magnesium toxicity)

Note: pregnancy assessment relies on inspection, palpation, and auscultation (fetal heart rate); reflexes are the key percussion-related test.

Auscultation

Technique: auscultate the fetal heart rate (FHR) with a Doppler (or fetoscope), typically over the fetal back (located with Leopold's). Count for a full minute and distinguish it from the maternal pulse. Also auscultate maternal heart/lungs as indicated.

Sound	Normal	Abnormal & significance
Fetal heart rate	110–160 bpm, with accelerations (a reassuring sign of well-being)	<110 (bradycardia) or >160 (tachycardia), decreased variability, or late/variable decelerations → fetal distress
Uterine activity (tocodynamometer)	Contractions with adequate rest between	Excessive/prolonged contractions (tachysystole) → reduced fetal oxygenation

Why fetal heart-rate patterns matter (VEAL CHOP) The FHR pattern reveals fetal oxygenation. Use VEAL CHOP: Variable decels = Cord compression; Early decels = Head compression (benign, mirror contractions); Accelerations = Okay (reassuring); Late decels = Placental insufficiency (ominous—act!). Late decelerations mean the placenta isn't delivering enough oxygen: reposition (left side), give oxygen, stop oxytocin, increase IV fluids, and notify the provider.

Assessment Tools

Fundal height by gestation & fetal heart-rate patterns (VEAL CHOP) Fundal Height Milestones 12 wk: at symphysis 20 wk: at umbilicus 36 wk: near xiphoid ~20–36 wk: fundal height (cm) ≈ weeks FHR patterns — VEAL CHOP Variable decels → Cord compression Early decels → Head compression (benign) Accelerations → Okay (reassuring — good sign) Late decels → Placental insufficiency (OMINOUS) Late decels? Act now — "LION": Left side · IV fluids ↑ · Oxygen · Notify (stop oxytocin) Normal FHR = 110–160 bpm; accelerations are reassuring. Reduced variability + late decels = fetal distress.

Fundal height (cm) ≈ weeks of gestation from about 20–36 weeks (12 wk at the symphysis, 20 wk at the umbilicus). Read fetal heart-rate patterns with VEAL CHOP—late decelerations are ominous and require immediate action.

Tool	Purpose	Interpretation & clinical significance
Naegele's rule	Estimate the due date	LMP − 3 months + 7 days.
GTPAL	Summarize obstetric history	Gravida/Term/Preterm/Abortions/Living—assesses risk.
Fundal height (McDonald's)	Track fetal growth	~20–36 wk: cm ≈ weeks; a discrepancy >4 cm needs evaluation.
Leopold's maneuvers	Determine fetal presentation/position	Guides FHR placement and delivery planning.
Fetal heart rate / NST / BPP	Assess fetal well-being	110–160 with accelerations = reassuring; late decels/low variability = distress.
Fetal movement (kick counts)	Monitor fetal well-being at home	Decreased movement → evaluate; teach to report.
Deep tendon reflexes	Assess preeclampsia/magnesium	Hyperreflexia/clonus = preeclampsia; absent = magnesium toxicity.

Focused Assessment

1. History & dating: LMP/EDD (Naegele's), GTPAL, symptoms, fetal movement, and risk factors. ↓ 2. Maternal vitals & weight: blood pressure (preeclampsia), weight gain, and screen for danger signs; position with a left tilt. ↓ 3. Inspect: skin, edema (face/hands vs. ankles), abdomen size, and any bleeding/leaking fluid. ↓ 4. Palpate: fundal height (McDonald's), Leopold's maneuvers, deep tendon reflexes/clonus, edema, and contractions. ↓ 5. Auscultate the fetal heart rate (110–160, note accelerations/decelerations) and assess uterine activity. ↓ 6. Correlate & act: connect BP/reflexes (preeclampsia), fundal height (growth), FHR (well-being), and labs; teach danger signs and decide priorities.

Priority findings: severe hypertension with headache/visual changes (preeclampsia), any bleeding, decreased fetal movement, late decelerations/fetal distress, ruptured membranes, and preterm contractions—act/report promptly.

Red Flag Findings

Finding	Possible cause	Immediate nursing action
BP ≥160/110 with severe headache/visual changes/RUQ pain	Severe preeclampsia (impending eclampsia)	Notify provider, seizure precautions, anticipate magnesium/antihypertensives; monitor fetus.
Vaginal bleeding	Placenta previa/abruptio	Assess amount/pain, VS, fetal monitoring, notify provider; no vaginal exam if previa suspected.
Late decelerations / fetal bradycardia / decreased variability	Fetal distress / placental insufficiency	Left side, oxygen, ↑IV fluids, stop oxytocin, notify provider ("LION").
Decreased/absent fetal movement	Fetal compromise	Fetal monitoring/NST, notify provider.
Gush/leaking of fluid before labor	Rupture of membranes (± preterm)	Assess fluid/FHR, check for cord prolapse, notify provider.
Regular painful contractions before 37 weeks	Preterm labor	Monitor, hydration, notify provider; anticipate tocolytics/steroids.

Documentation

Document findings objectively, specifically, and measurably for both mother and fetus—include gestation, vitals, fundal height, FHR, and any danger signs, plus the action taken.

Weak (vague)	Strong (specific, measurable)
"Baby's heartbeat fine."	"FHR 142 bpm by Doppler over the LLQ, with accelerations noted; no decelerations. Fetal movement felt by client."
"BP a little high."	"32 weeks. BP 168/110 (repeat 166/108); reports severe headache and blurred vision; 3+ DTRs with clonus; facial edema. Provider notified; seizure precautions initiated."
"Belly measures big."	"Fundal height 30 cm at 26 weeks (>4 cm greater than expected). Provider notified; ultrasound requested."

Documentation tip Record gestational age, maternal vitals (BP), fundal height in cm, FHR with pattern (accelerations/decelerations), reflexes, edema (location), and fetal movement, plus provider notification and time. Specific, measurable documentation reveals trends across visits.

Clinical Judgment

Recognize cues: a client at 30 weeks arrives for a prenatal visit with BP 164/106, a severe headache, blurred vision, facial and hand edema, and 4+ reflexes with clonus. Urine dipstick shows protein.
Analyze cues: BP ≥160/110 + severe headache/visual changes + facial/hand edema + hyperreflexia/clonus + proteinuria = severe preeclampsia with impending eclampsia—cerebral irritability signals a possible seizure.
Prioritize problems: prevent a seizure/stroke and protect the fetus—this is an emergency.
Determine next steps: notify the provider immediately, institute seizure precautions (quiet, dim room, minimal stimulation, side rails up/padded, suction/oxygen ready), anticipate magnesium sulfate and antihypertensives, monitor BP, reflexes, and the fetal heart rate, and prepare for possible delivery. Reassess frequently.

NCLEX High-Yield Review

What the NCLEX Wants You to Know

Naegele's rule: LMP − 3 months + 7 days; GTPAL summarizes OB history
Fundal height (cm) ≈ weeks (~20–36 wk); >4 cm off needs evaluation
Normal FHR = 110–160; accelerations reassuring; late decels = act (LION)
Facial/hand edema + high BP + hyperreflexia = preeclampsia
Position on the LEFT side; report bleeding, ↓fetal movement, ROM, preterm contractions

Frequently tested findings: fundal height vs. dates, FHR patterns (VEAL CHOP), preeclampsia signs (BP, reflexes, facial/hand edema), and danger signs. Expected vs unexpected: dependent ankle edema, mild dyspnea, and Braxton Hicks are expected; facial/hand edema, severe headache, bleeding, late decels, and decreased fetal movement are urgent. Priority assessments: blood pressure/reflexes (preeclampsia), fetal heart rate/movement (well-being), and bleeding/contractions. Delegation: the RN assesses fundal height/FHR/reflexes and interprets; UAP can take maternal vitals, weigh, and report—but not perform or interpret fetal/OB assessments. Safety: left-lateral positioning, seizure precautions (preeclampsia), no vaginal exam with suspected previa, and prompt response to fetal distress. Common traps: treating facial edema as normal, ignoring late decelerations, laying a pregnant client flat, and missing preeclampsia warning signs.

Memory Aids

Obstetric history "GTPAL": Gravida, Term, Preterm, Abortions/losses, Living children.
Due date "Naegele's": LMP −3 months, +7 days (adjust the year).
Fundal height "cm = weeks" from ~20–36 weeks (12 wk = symphysis; 20 wk = umbilicus).
FHR patterns "VEAL CHOP": Variable=Cord, Early=Head, Accelerations=Okay, Late=Placental insufficiency.
Late decels action "LION": Left side, IV fluids up, Oxygen, Notify (stop oxytocin).
Preeclampsia warning "HELP": Headache, Epigastric/RUQ pain, Light/visual changes, Pressure (high BP) → report.

Case Study

Mrs. Okonkwo, 28, is at 34 weeks and comes in reporting a pounding headache and "seeing spots." Assessment: BP 172/112 (repeat 170/110), facial and hand edema, 4+ deep tendon reflexes with clonus, and 3+ protein on urine dipstick. The fetal heart rate is 148 with accelerations and no decelerations.

Recognize & analyze cues

Cues: BP ≥160/110 + severe headache + visual changes + facial/hand edema + hyperreflexia/clonus + proteinuria = severe preeclampsia with impending eclampsia. The fetus is currently reassuring (FHR 148 with accelerations), but the mother is at high risk for a seizure/stroke.

Prioritize problems

Priority: prevent a seizure and control the BP while continuing to monitor the fetus. This is an obstetric emergency.

Determine next steps

Notify the provider immediately, institute seizure precautions (quiet, dim room, minimal stimulation, side rails padded, suction/oxygen and calcium gluconate ready), anticipate magnesium sulfate and antihypertensives, monitor BP/reflexes/FHR and I&O, and prepare for possible delivery (with betamethasone if needed). Reassess frequently.

Evaluate

Success = BP controlled, no seizure, stable reflexes, and continued fetal well-being. Reinforce reporting of worsening headache/visual changes and the plan for close monitoring/delivery.

Practice Questions

1. A client's LMP was June 10. Using Naegele's rule, what is the estimated due date?

April 3
March 10
May 17
March 17

Rationale

Answer: 4. Naegele's rule: subtract 3 months and add 7 days. June 10 − 3 months = March 10; + 7 days = March 17 (of the following year). The other options miscalculate the months/days.

2. At a 24-week prenatal visit, the nurse measures a fundal height of 24 cm. How should the nurse interpret this?

It indicates the fetus is too small
It is consistent with the gestational age (normal)
It indicates twins
It requires an immediate cesarean

Rationale

Answer: 2. From about 20–36 weeks, fundal height in cm approximately equals the weeks of gestation—so 24 cm at 24 weeks is a normal, expected finding. It does not indicate a small fetus (1), twins (3), or the need for cesarean (4).

3. A nurse notes late decelerations on the fetal monitor. Which action should the nurse take first?

Reposition the client onto her left side
Document and continue monitoring only
Increase the oxytocin infusion
Place the client flat on her back

Rationale

Answer: 1. Late decelerations indicate placental insufficiency—the first action is to reposition to the left side (then oxygen, increase IV fluids, stop oxytocin, notify — "LION"). Documenting only (2), increasing oxytocin (3), and lying flat (4) worsen fetal oxygenation.

4. Which finding during a prenatal assessment is most concerning and requires prompt action?

Mild dependent ankle edema at the end of the day
Irregular, painless Braxton Hicks contractions
A blood pressure of 168/110 with a severe headache and facial edema
A fetal heart rate of 145 with accelerations

Rationale

Answer: 3. BP ≥160/110 with a severe headache and facial edema indicates severe preeclampsia (impending eclampsia)—an emergency. Ankle edema (1), Braxton Hicks (2), and a normal FHR with accelerations (4) are expected findings.

5. When performing Leopold's maneuvers, the nurse is primarily determining what?

The mother's blood pressure
The fetal presentation, lie, and position
The amount of amniotic fluid exactly
The mother's reflexes

Rationale

Answer: 2. Leopold's maneuvers are systematic abdominal palpation to determine the fetal presentation (cephalic/breech), lie, and position—and the best location to auscultate the FHR. They do not measure BP (1), fluid volume (3), or reflexes (4).

6. SATA. Which findings during pregnancy require prompt provider notification? Select all that apply.

Vaginal bleeding
A severe headache with visual changes and high blood pressure
Mild ankle swelling in the evening
Sudden gush of fluid from the vagina before term
Decreased or absent fetal movement

Rationale

Answers: 1, 2, 4, 5. Bleeding, preeclampsia warning signs, rupture of membranes, and decreased fetal movement are danger signs needing prompt evaluation. Mild evening ankle swelling (3) is an expected finding.

7. SATA. Which are reassuring (normal) findings during a prenatal assessment? Select all that apply.

Fetal heart rate of 140 bpm with accelerations
Fundal height in cm approximately equal to the weeks of gestation
4+ deep tendon reflexes with clonus
Dependent ankle edema late in the day
Fetal movement felt by the client

Rationale

Answers: 1, 2, 4, 5. A normal FHR with accelerations, fundal height matching dates, dependent ankle edema, and felt fetal movement are reassuring. 4+ reflexes with clonus (3) is abnormal (preeclampsia/CNS irritability).

8. Priority. A nurse is assessing four pregnant clients. Which client should the nurse assess first?

A client at 36 weeks with mild ankle edema
A client asking about breastfeeding classes
A client with Braxton Hicks contractions at 38 weeks
A client at 33 weeks with a BP of 170/112, a severe headache, and blurred vision

Rationale

Answer: 4. Severe hypertension with a headache and visual changes indicates severe preeclampsia with impending eclampsia—an emergency and the priority. The others are stable/expected.

Key Takeaways

Pregnancy assessment cares for two patients; use Naegele's rule (LMP − 3 months + 7 days) for the due date and GTPAL for OB history.
Fundal height (cm) ≈ weeks of gestation from about 20–36 weeks; a discrepancy >4 cm needs evaluation. Leopold's maneuvers determine fetal presentation/position.
Normal FHR = 110–160 bpm; accelerations are reassuring. Read patterns with VEAL CHOP; late decelerations are ominous → act (LION: Left side, IV fluids, Oxygen, Notify/stop oxytocin).
Preeclampsia signs: high BP, facial/hand edema (not just ankles), hyperreflexia/clonus, and proteinuria; severe headache/visual changes/RUQ pain are warning signs.
Position pregnant clients on the left side to improve maternal-fetal circulation.
Danger signs to report: bleeding, severe headache/visual changes, decreased fetal movement, rupture of membranes, and preterm contractions.
Document gestation, BP, fundal height, FHR/pattern, reflexes, edema, and fetal movement specifically; act promptly on priority findings.

References

Lowdermilk, D. L., Perry, S. E., Cashion, K., Alden, K. R., & Olshansky, E. (2020). Maternity & women's health care (12th ed.). Elsevier.
Ricci, S. S. (2021). Essentials of maternity, newborn, and women's health nursing (5th ed.). Wolters Kluwer/Lippincott.
Jarvis, C., & Eckhardt, A. (2024). Physical examination & health assessment (9th ed.). Elsevier.
Silvestri, L. A., & Silvestri, A. E. (2023). Saunders comprehensive review for the NCLEX-RN examination (9th ed.). Elsevier.
Assessment Technologies Institute. (2023). ATI RN maternal newborn nursing review module (12th ed.). ATI Nursing Education.
American College of Obstetricians and Gynecologists. (2021). Antepartum fetal surveillance: ACOG practice bulletin no. 229. Obstetrics & Gynecology, 137(6), e116–e127. https://doi.org/10.1097/AOG.0000000000004410

Pregnancy Assessment

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