Nursing Management of Malnutrition in Pregnant Women with Hyperemesis Gravidarum

Overview

Hyperemesis gravidarum (HG) is an extreme form of nausea and vomiting during pregnancy that can lead to dehydration, electrolyte imbalance, and significant weight loss. When prolonged, HG creates a high risk for maternal malnutrition, which jeopardises fetal growth and maternal health. Nurses play a pivotal role in early identification, comprehensive assessment, and coordinated management to prevent or treat malnutrition.

Comprehensive Assessment

History Taking

• Onset, frequency, and severity of nausea/vomiting.
• Weight changes from prepregnancy baseline.
• Dietary intake patterns foods tolerated vs. rejected.
• Previous episodes of HG or other gastrointestinal disorders.
• Medication use (antacids, antiemetics, vitamins).
• Psychosocial factors support system, anxiety, depression.

Physical Examination

• Vital signs, with particular attention to orthostatic changes.
• Signs of dehydration: dry mucous membranes, decreased skin turgor, sunken eyes.
• Weight measurement and calculation of BMI.
• Abdominal examination for uterine size and fetal movement.

Laboratory Evaluation

• Complete blood count assess anemia.
• Electrolytes (Na, K, Cl, bicarbonate) detect metabolic alkalosis.
• Renal function (BUN, creatinine) monitor dehydration impact.
• Blood glucose rule out hypoglycaemia.
• Serum albumin/prealbumin markers of nutritional status.

EvidenceBased Nursing Interventions

1. Fluid and Electrolyte Management

1. Initiate oral rehydration solutions (ORS) as soon as the patient can tolerate small sips.
2. For moderatetosevere dehydration, coordinate IV therapy (e.g., 0.9% saline with potassium supplementation) per physician order.
3. Monitor input/output charts, weight trends, and serum electrolytes every 1224hours.

2. Nutritional Support

• Incremental oral feeding: Start with clear liquids, progress to full liquids, then soft solids as tolerated.
• Small, frequent meals: 56 minimeals spaced 23hours apart.
• Highcalorie, highprotein supplements: Use commercially prepared oral nutrition supplements (e.g., 400kcal, 20g protein) between meals.
• Enteral nutrition: If oral intake <500kcal/day for >48hours, consider nasogastric or nasojejunal feeding under dietitian guidance.
• Parenteral nutrition: Reserved for refractory cases where enteral route is contraindicated.

3. Pharmacologic Management of Nausea/Vomiting

Collaborate with the prescribing clinician to ensure timely administration of antiemetics such as:

• Ondansetron 48mg PO/IV q8h.
• Metoclopramide 10mg PO q6h.
• Promethazine 12.525mg PO/IV q68h (use with caution for sedation).

Document effectiveness and sideeffects; adjust regimen as needed.

4. SymptomFocused Comfort Measures

• Encourage ginger tea or capsules (up to 1g/day) if not contraindicated.
• Provide a calm environment: dim lighting, quiet, and cool temperature.
• Position the woman upright or semirecumbent during and after meals.
• Offer aromatherapy (lemon, peppermint) with patient consent.

5. Psychological Support

Hyperemesis can be emotionally draining. Nursing actions include:

• Active listening and validation of feelings.
• Screening for anxiety/depression using tools such as the PHQ9.
• Facilitating referral to mentalhealth services or support groups.

Patient & Family Education

Education should be clear, culturally sensitive, and reinforced at each encounter.

• Dietary tips: Choose bland, lowfat foods; avoid strong odors; keep cold foods chilled as they may be more tolerable.
• Fluid strategies: Sip 150200ml every 1520minutes; use a straw; flavor water with a splash of fruit juice.
• Medication adherence: Explain purpose, timing, and common sideeffects of antiemetics.
• Warning signs: Persistent vomiting >24h, decreasing urine output, dizziness, or rapid weight loss (>5% in 2weeks) warrant immediate medical attention.
• Selfmonitoring: Encourage a daily log of fluid intake, episodes of vomiting, and weight.

Provide written handouts and direct families to reputable online resources such as the American College of Obstetricians and Gynecologists (ACOG) patient pages.

Ongoing Monitoring & Discharge Planning

Inpatient Monitoring

• Weight: Record at least twice daily.
• Fluid balance: Strict I/O charting; target>1500ml oral/IV intake per day.
• Electrolytes: Recheck every 24h until stable.
• Fetal wellbeing: Perform fetal heart rate assessment as gestational age permits.

Discharge Criteria

1. Stable weight (loss <5% of prepregnancy weight) for 48hours.
2. Ability to tolerate 1500ml oral fluids and 30kcal/kg/day nutrition.
3. Electrolytes within normal range.
4. Effective symptom control with oral antiemetics.

PostDischarge FollowUp

• Schedule outpatient visit within 48hours of discharge.
• Arrange dietitian appointment for individualized meal planning.
• Set up homehealth nurse visits if high risk for relapse.
• Provide 24hour contact number for urgent concerns.