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HLT-LPN37-04 · Lesson 2 · 16 clock hours · theory

Antepartum Care: Prenatal Assessment and Common Discomforts

Objective. Students identify components of the initial and ongoing prenatal assessment, apply GTPAL notation, and distinguish normal discomforts of pregnancy from warning signs requiring provider notification.

⚠ Pending professional review

This lesson, its worked examples and its practice questions has not yet been verified by a licensed clinician in the field or by a certification or approval body. It is a study draft and may contain errors. Do not use it to make decisions about any patient or medication. Always follow your instructor, your supervising professional, and current official references and regulations.

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Antepartum Care: Prenatal Assessment and Common Discomforts

Antepartum care begins at the first confirmation of pregnancy and continues until labor begins. As an LPN, you support the healthcare team by collecting data, documenting findings, providing education, and recognizing when findings fall outside normal limits and must be escalated.

The Initial Prenatal Visit

The first prenatal visit is the most comprehensive. It typically includes a complete health history, physical examination, laboratory work, and establishment of a baseline for all future visits. Key data collected include:

GTPAL Notation

GTPAL is a standardized shorthand for recording a patient's obstetric history. Each letter stands for a specific category:

| Letter | Meaning | What to count |

|--------|---------|---------------|

| G | Gravida | Total number of pregnancies, including the current one |

| T | Term births | Births at 37 weeks or later |

| P | Preterm births | Births between 20 and 36 6/7 weeks |

| A | Abortions/losses | Spontaneous or elective losses before 20 weeks |

| L | Living children | Children currently alive |

A woman who is currently pregnant for the third time, delivered one baby at 39 weeks (living), delivered one baby at 34 weeks (living), and had one first-trimester miscarriage would be documented as G3 T1 P1 A1 L2.

Important: The current pregnancy always counts in Gravida. Twins or triplets count as one pregnancy but as one birth event; each infant counts separately in L.

Ongoing Prenatal Visits

After the initial visit, return visits follow a standard schedule and focus on interval assessment. At each visit the LPN typically collects:

Trimester Highlights

First trimester (weeks 1–13): Uterus remains in the pelvis; fetal heart tones detectable by Doppler around 10–12 weeks. Common discomforts include nausea and vomiting, breast tenderness, urinary frequency, and fatigue.

Second trimester (weeks 14–27): Uterus rises into the abdomen. Quickening (first fetal movement felt by the mother) typically occurs between 16 and 20 weeks. Common discomforts include round ligament pain, backache, heartburn, and nasal congestion.

Third trimester (weeks 28–40): Uterus reaches toward the xiphoid process. Common discomforts include leg cramps, shortness of breath, hemorrhoids, dependent edema, and Braxton Hicks contractions.

Anticipatory Guidance: Nutrition and Activity

Warning Signs Requiring Immediate Provider Notification

The LPN must recognize findings that fall outside the expected and escalate promptly:

The first five signs listed above together may indicate preeclampsia, a serious hypertensive disorder of pregnancy that can become life-threatening. This is a priority safety concern.

Scope of Practice Reminder

As an LPN under supervision, you collect and document data, provide education within established guidelines, and communicate abnormal findings to the RN or provider. You do not independently interpret diagnostic results or modify the plan of care.

Key terms8

GTPALA five-part notation system summarizing obstetric history: Gravida (total pregnancies), Term births, Preterm births, Abortions/losses, and Living children.
GravidaThe total number of times a woman has been pregnant, including the current pregnancy, regardless of outcome.
Fundal heightThe distance in centimeters from the symphysis pubis to the top of the uterine fundus; after 20 weeks it approximates gestational age in weeks.
QuickeningThe first fetal movements perceived by the mother, typically felt between 16 and 20 weeks of gestation.
PreeclampsiaA hypertensive disorder of pregnancy characterized by elevated blood pressure and often proteinuria, which can progress to serious maternal and fetal complications.
Fetal heart tones (FHT)The audible heartbeat of the fetus, with a normal range of 110–160 beats per minute, assessed by fetoscope or Doppler device.
AntepartumThe period of pregnancy before the onset of labor, during which prenatal assessment and education take place.
Anticipatory guidanceProactive patient education provided before expected events or discomforts occur, helping patients prepare and recognize when to seek care.

Worked examples3

1. A patient states: 'I have been pregnant four times. My first baby was born at 38 weeks and is living. My second pregnancy ended in a miscarriage at 10 weeks. My third pregnancy produced twins born at 35 weeks; both are living. I am currently pregnant.' Record her GTPAL.
  1. Step 1 — G (Gravida): Count all pregnancies including the current one. Pregnancy 1 + miscarriage + twins pregnancy + current = 4. G = 4.
  2. Step 2 — T (Term births): Births at 37 weeks or later. Baby 1 born at 38 weeks = 1 term birth. T = 1.
  3. Step 3 — P (Preterm births): Births between 20 and 36 6/7 weeks. Twins born at 35 weeks = 1 preterm birth event. P = 1.
  4. Step 4 — A (Abortions/losses): Losses before 20 weeks. The miscarriage at 10 weeks = 1. A = 1.
  5. Step 5 — L (Living children): Baby 1 (living) + twin A (living) + twin B (living) = 3. L = 3.
  6. Step 6 — Assemble: G4 T1 P1 A1 L3.
Answer: G4 T1 P1 A1 L3
2. At a 28-week visit, the nurse measures fundal height. The measurement is 31 cm. Is this within the expected range?
  1. Step 1 — Recall the guideline: after 20 weeks, fundal height in centimeters should approximate gestational age in weeks, with ±2 cm considered generally acceptable.
  2. Step 2 — Identify expected range: gestational age is 28 weeks, so expected fundal height is 26–30 cm.
  3. Step 3 — Compare: measured fundal height is 31 cm, which is 3 cm above the gestational age. This falls outside the ±2 cm range.
  4. Step 4 — Action: document the finding and report to the supervising RN or provider for further evaluation, as discrepancy may indicate macrosomia, multiple gestation, or polyhydramnios.
Answer: 31 cm is outside the expected range of 26–30 cm for 28 weeks; the finding should be documented and reported for provider evaluation.
3. A patient at 32 weeks has a recorded pre-pregnancy weight of 140 lb. Today she weighs 163 lb. How many pounds has she gained, and is this consistent with expected gain at this point in pregnancy?
  1. Step 1 — Calculate total weight gained: 163 lb − 140 lb = 23 lb gained so far.
  2. Step 2 — Recall guidance: for a patient with a normal pre-pregnancy BMI, total expected gain over the full pregnancy is approximately 25–35 lb.
  3. Step 3 — Consider gestational age: at 32 weeks the patient is about 80% through the pregnancy. A gain of 23 lb at this point is reasonable within the expected trajectory for a normal-BMI patient.
  4. Step 4 — Document and note: weight gain appears on track; continue monitoring at each visit and report sudden rapid gain, which can signal fluid retention.
Answer: 23 lb gained; this is within the expected range for 32 weeks gestation in a patient with a normal pre-pregnancy BMI.
In class: Apply GTPAL to a set of six patient vignettes, recording obstetric history correctly and explaining each component to a peer. · Using a case study of a 28-week prenatal visit, document expected findings for each trimester assessment component (blood pressure, weight gain, fundal height, fetal heart tones, urinalysis results) and flag two abnormal values for escalation. · Role-play a prenatal education session in pairs: one student plays the nurse providing anticipatory guidance about nutrition, activity, common discomforts, and warning signs; the other plays a first-trimester patient and asks three spontaneous questions.
Materials: Maternal-newborn nursing textbook, GTPAL reference card, prenatal flow-sheet forms, blood pressure cuffs, fetoscope/Doppler (demo), NCLEX-PN test plan (Health Promotion and Maintenance; Reduction of Risk Potential)
Check: Correct GTPAL notation on all six vignettes; identification of at least four of five planted warning signs in the case study with correct rationale; instructor observation checklist score ≥ 78% on patient education role-play.

Practice check8

Answer each question, then check it. Nothing is recorded; this is your own practice.

Health Promotion and Maintenance
1. A patient tells the nurse she has been pregnant five times. She had one baby at 40 weeks (living), one baby at 33 weeks (living), two first-trimester miscarriages, and is currently pregnant. Which GTPAL notation is correct?
Reduction of Risk Potential
2. The LPN is performing a 26-week prenatal visit. The fundal height measures 22 cm. What is the most appropriate nursing action?
Reduction of Risk Potential
3. A patient at 30 weeks of gestation calls the clinic reporting a sudden severe headache, blurred vision, and swelling of her hands and face. The nurse recognizes these symptoms as potentially indicating which condition?
Health Promotion and Maintenance
4. When performing a prenatal assessment, the LPN auscultates fetal heart tones at 148 beats per minute. How should the nurse document this finding?
Health Promotion and Maintenance
5. A first-trimester patient asks why she should avoid eating deli meats during pregnancy. Which response by the nurse is most accurate?
Health Promotion and Maintenance
6. A patient at 22 weeks of gestation reports feeling 'little flutters' in her abdomen for the past week. The nurse correctly identifies this as:
Reduction of Risk Potential
7. During a routine 28-week prenatal visit, the dipstick urinalysis shows 2+ proteinuria. The patient's blood pressure is elevated above her baseline. What is the LPN's priority action?
Health Promotion and Maintenance
8. A prenatal patient at 10 weeks gestation asks whether she can continue her daily 30-minute walks. Which response reflects current evidence-based guidance?
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