Nursing Clinical Practice Guide
Clinical Scenario: You are the nurse in the Pediatric Emergency Department. A young mother brings in her 4-week-old son. She reports he has been vomiting forcefully after every feed for 5 days, and now he seems listless, has a sunken fontanelle, and has had only one wet diaper in 12 hours. The pediatrician suspects hypertrophic pyloric stenosis.
Nursing Intervention Strategy:
1. Assessment: Perform a focused assessment: Vital signs (tachycardia, hypotension?), weight (compare to birth weight), hydration status (skin turgor, mucous membranes, fontanelle), abdominal exam (visible peristaltic waves? attempt to palpate for an olive-shaped mass in the right upper quadrant during a feed or after vomiting).
2. Immediate Action (Priority): Obtain IV access (often challenging in a dehydrated infant; may require an experienced nurse or use of a vein finder). Send STAT labs: Electrolytes (Na, K, Cl, CO2), BUN/Creatinine, and possibly a blood gas.
3. Care Implementation:
* Initiate IV fluid resuscitation per protocol (e.g., 20 mL/kg bolus of Normal Saline).
* Place the infant NPO. Place a sign above the crib.
* Maintain accurate I&O (Intake and Output) and daily weights.
* Position the infant on the right side or upright to minimize gastric contents in the esophagus.
* Provide emotional support and clear explanations to the anxious parents.
4. Monitoring & Evaluation: Closely monitor electrolyte results. The goal is to correct the chloride deficit (aim for Cl > 100 mEq/L) and ensure adequate urine output (>1-2 mL/kg/hr) before surgery. Assess for resolution of dehydration signs.
Patient Safety and Precautions:
* Key Point! Never attempt oral feeds once HPS is suspected until cleared by the surgeon postoperatively.
* Handle the abdomen gently during assessment to avoid causing discomfort.
* During IV therapy, use an infusion pump and carefully monitor the site for infiltration, as the infant's veins are fragile.
Nursing Procedure & Medication FlowProcedure: Managing IV Fluids for a Dehydrated Infant
1. Verify provider's order for IV fluid type and rate (e.g., D5 1/2 NS + 20 mEq KCl/L at maintenance rate).
2. Calculate the rate based on weight (e.g., using the 4-2-1 rule or hospital pediatric protocol).
3. Prime IV tubing, ensuring no air bubbles.
4. Start IV in an appropriate site (e.g., hand, foot, scalp vein).
5. Secure the site well with a transparent dressing and an arm board if needed.
6. Label the tubing with date/time and rate.
7. Program the infusion pump with the correct rate (mL/hr) and set appropriate pressure alarms.
8. Critical: Do not add potassium (KCl) to the IV fluids until you have confirmed the infant is voiding (has adequate renal function).
A Word from Your Senior Nurse
"In pediatrics, your assessment skills are everything. That sunken fontanelle and those few wet diapers tell you this baby is in trouble before the lab results even come back. Remember the mantra: 'Fix the plumbing before you call the plumber.' In this case, the surgeon is the plumber, but your job is to get the patient's fluid and electrolyte 'pipes' in working order first. This prioritization saves lives and is exactly what the NCLEX wants you to know. Always think: What is the immediate threat to life? Here, it's not the obstructed pylorus itself—it's the dehydration and alkalosis it caused."