Core Nursing Explanation
Key Concept Analysis: This question assesses the priority nursing intervention for a child with
Acute Post-Streptococcal Glomerulonephritis (APSGN). APSGN is an immune-mediated inflammation of the glomeruli following a streptococcal infection (like strep throat). The key pathophysiological problem is
decreased glomerular filtration rate (GFR) due to inflammation and damage. This leads to three major clinical problems:
fluid retention (edema, hypertension),
proteinuria, and
hematuria. The priority is managing the most immediate life-threatening complication.
Answer Rationale:
Key Point! The child has significant
hypertension (BP 140/90 mmHg) and oliguria, indicating severe fluid overload and potential for
hypertensive encephalopathy (seizures, headache, altered mental status) or
pulmonary edema. Therefore, the priority is to closely monitor BP and restrict fluids to reduce intravascular volume and control hypertension. This directly addresses the ABCs (Airway, Breathing, Circulation) by protecting cerebral and cardiac function.
Distractor Analysis:
- Watch out for confusion! Encouraging increased fluid intake is contraindicated. The child is in a state of fluid overload (edema, hypertension, oliguria). Adding more fluid would worsen hypertension and could precipitate heart failure or encephalopathy.
- Watch out for confusion! Administering a high-protein diet is incorrect. While protein is lost in urine, the damaged kidneys cannot properly excrete the waste products (like BUN and creatinine) from protein metabolism. A high-protein diet would increase the renal workload and worsen azotemia (buildup of nitrogenous wastes). A moderate or low-protein diet is typically recommended during the acute phase.
- Watch out for confusion! Providing vigorous diuretic therapy is not the nurse's independent priority intervention. Diuretics may be prescribed by a physician, but their use requires careful monitoring. "Vigorous" therapy could lead to rapid fluid shifts, electrolyte imbalances (like hypokalemia), and dehydration, which is dangerous. The initial, priority nursing actions are monitoring and fluid restriction.
Related Concepts: The nursing management of APSGN follows the acronym "HOP":
Hypertension management,
Oliguria/fluid management, and
Prevention of complications (infection, electrolyte imbalance). Bed rest is often encouraged during the acute phase to reduce metabolic demands. Antibiotics may be given to eradicate any lingering streptococcal infection, but they do not alter the course of the glomerulonephritis itself.
Concept Summary
| Problem in APSGN | Pathophysiology | Nursing Priority/Intervention |
|---|
| Hypertension & Edema | Decreased GFR → Sodium & Water Retention → Increased Blood Volume | Monitor BP frequently (q2-4h). Implement fluid & sodium restriction. |
| Oliguria | Inflamed glomeruli filter less urine | Strict I&O (Intake & Output), daily weights, fluid restriction. |
| Proteinuria & Hematuria | Damaged glomerular basement membrane allows proteins & RBCs to leak | Monitor urinalysis. Provide moderate-protein diet (not high-protein). |
| Risk for Complications | Hypertensive encephalopathy, Pulmonary edema, AKI (Acute Kidney Injury) | Neurological checks (headache, vision changes, seizure activity). Assess for respiratory distress. |
Side-by-Side Comparison!
| Condition | Acute Glomerulonephritis (APSGN) | Nephrotic Syndrome |
|---|
| Primary Problem | Inflammation → Decreased GFR | Leaky membrane → Massive Protein Loss |
| Edema | Mild-Moderate (periorbital, dependent) | Severe, generalized (anasarca) |
| Hypertension | Common & Often Severe (Priority!) | Less common, may be normal or low |
| Urine Findings | Hematuria (cola-colored), mild-moderate proteinuria | Massive proteinuria (>3.5g/day), no hematuria |
| Serum Albumin | Normal or slightly low | Very Low |
| Priority Nursing Focus | BP Control & Fluid Restriction | Managing Edema & Preventing Infection |
Anatomy, Physiology & Pharmacology Points
- Glomerulus: The filtering unit of the kidney. Inflammation here impairs its ability to filter waste and regulate fluid/electrolytes.
- Renin-Angiotensin-Aldosterone System (RAAS): In APSGN, decreased renal perfusion activates RAAS, leading to vasoconstriction and sodium/water retention, exacerbating hypertension.
- Antihypertensives: Medications like calcium channel blockers (e.g., amlodipine) or vasodilators may be used. ACE inhibitors/ARBs are often avoided in acute phase due to risk of worsening renal function in the setting of decreased GFR.
- Diuretics: Loop diuretics (e.g., furosemide) may be used cautiously to promote diuresis and reduce edema/hypertension, but require monitoring of electrolytes (K+, Na+).
Memory Tips
- Think "DAM" for APSGN priorities: Dangerous Hypertension, Assess Fluid (I&O, weight), Monitor for complications (encephalopathy).
- Color Code: APSGN urine is often described as "cola-colored" or "tea-colored" due to hematuria. Nephrotic syndrome urine is "frothy" or "foamy" due to proteinuria.
- Hypertension is the #1 enemy in APSGN. If you see high BP + child + recent strep infection, think fluid restriction and close monitoring first.
High-Frequency NCLEX Topics
APSGN is a classic pediatric renal disorder. The NCLEX loves to test:
1.
Identifying Priority Assessments: Vital signs (especially BP) and neurological status.
2.
Contraindicated Actions: Knowing NOT to give extra fluids or a high-protein diet.
3.
Patient/Family Education: Importance of completing antibiotic therapy for strep infections to prevent APSGN, signs of recurrence (edema, dark urine).
Watch Out for Question Variations!
- Instead of asking for the priority intervention, the question might ask: "Which finding requires immediate intervention?" Answer: Severe hypertension or a report of a severe headache (sign of encephalopathy).
- The question could shift to discharge teaching: "The nurse is preparing discharge instructions. Which statement by the parent indicates a need for further teaching?" The incorrect statement would be: "I will encourage my child to drink plenty of fluids."
- It might combine with medication administration: The priority before giving an antihypertensive medication is assessing the patient's current blood pressure.