An approach to the child with acute glomerulonephritis

Thomas R Welch1

  • 1Department of Pediatrics, Upstate Golisano Children's Hospital, One Children's Circle, SUNY Upstate Medical University, Syracuse, NY 13210, USA.

Insights

Acute glomerulonephritis (AGN) in children is often manageable in primary care. Key diagnostic indicators include urinary findings like red blood cell casts and complement C3 levels, guiding treatment and referral decisions.

Area of Science:

  • Pediatric Nephrology
  • Internal Medicine
  • Primary Care Pediatrics

Background:

  • Acute glomerulonephritis (AGN) is a frequent pediatric condition.
  • Many cases can be effectively managed within primary care settings.
  • Diagnosis relies on characteristic urinary findings and laboratory tests.

Purpose of the Study:

  • To outline the primary care management of childhood acute glomerulonephritis.
  • To identify key diagnostic markers and criteria for specialist referral.
  • To differentiate common causes of AGN based on initial investigations.

Main Methods:

  • Review of diagnostic criteria for acute glomerulonephritis in children.
  • Analysis of urinary findings, including red blood cell casts.
  • Evaluation of complement C3 levels to distinguish between etiologies.
  • Assessment of clinical indicators for specialist referral.

Main Results:

  • Urinary red blood cell casts are a hallmark of AGN.
  • Low complement C3 levels suggest post-streptococcal AGN.
  • Normal complement C3 levels are often associated with IgA nephropathy.
  • Significant hypertension, renal insufficiency, or extrarenal symptoms necessitate immediate specialist consultation.

Conclusions:

  • Primary care physicians can manage many childhood AGN cases.
  • Complement C3 levels are crucial for initial etiological assessment.
  • Prompt specialist referral is indicated for severe presentations or concerning clinical signs.

Related Concept Videos

Acute Kidney Injury V: Interprofessional Care01:20

Acute Kidney Injury V: Interprofessional Care

Acute Kidney Injury (AKI) requires a collaborative healthcare approach to restore renal function and prevent complications. Essential management strategies involve monitoring fluid and electrolyte balance, adjusting medications, initiating dialysis when necessary, and providing nutritional support.Fluid and Electrolyte ManagementFluid Monitoring: Regularly monitoring body weight, central venous pressure, and urine output helps detect fluid imbalances early. Patient intake and output are...
Acute Kidney Injury VI: Nursing Management01:22

Acute Kidney Injury VI: Nursing Management

Acute Kidney Injury (AKI) results in an inability to maintain fluid, electrolyte, and acid-base balance. Effective nursing management is critical in improving patient outcomes and includes comprehensive patient assessment and targeted interventions.Comprehensive Patient AssessmentA detailed history collection is essential, focusing on any recent infections, nephrotoxic medication use, or chronic conditions such as hypertension and diabetes that may contribute to AKI. During the physical...
Acute Kidney Injury I: Introduction01:22

Acute Kidney Injury I: Introduction

Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such as Proteus,...