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Acute Pyelonephritis I: Introduction

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,...

Acute Kidney Injury II: Pathophysiology

Acute Kidney Injury II: Pathophysiology

Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...

Acute Pyelonephritis II: Diagnostic Studies and Management

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...

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of fluid...

Acute Kidney Injury III: Clinical Manifestations

Acute Kidney Injury III: Clinical Manifestations

Acute Kidney Injury (AKI) progresses through distinct clinical phases: the oliguric, diuretic, and recovery phases, each marked by unique manifestations and challenges.Oliguric Phase:The oliguric phase is the initial stage of AKI, typically lasting 10 to 14 days. This phase is marked by a significant reduction in urine output, usually less than 400 mL per day, indicating decreased kidney function. Fluid retention is a prominent feature, leading to symptoms such as edema, hypertension, and...

Acute Kidney Injury V: Interprofessional Care

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...

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Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis

Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis

Published on: July 18, 2017

[Interstitial nephritis].

J Halbritter¹, C Mayer, F M Rasche

¹Medizinische Klinik und Poliklinik für Endokrinologie und Nephrologie, Department für Innere Medizin, Neurologie und Dermatologie, Universitätsklinikum Leipzig, A.ö.R., Leipzig, Liebigstr. 20, 04159, Leipzig, Deutschland.

|August 20, 2009

Summary

This summary is machine-generated.

Interstitial nephritis, triggered by drugs or infections, causes kidney tubular damage. Early avoidance of triggers and corticosteroids improve outcomes, but chronic cases may lead to kidney failure.

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Intrarenal Injection of Escherichia coli in a Rat Model of Pyelonephritis

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Unilateral Ureteral Obstruction Model for Investigating Kidney Interstitial Fibrosis

Unilateral Ureteral Obstruction Model for Investigating Kidney Interstitial Fibrosis

Published on: April 25, 2025

Area of Science:

Nephrology
Internal Medicine
Pathophysiology

Context:

Interstitial nephritis is a kidney condition affecting tubules.
It can be induced by various factors including medications (antibiotics, NSAIDs, PPIs), infections, and systemic diseases.
Clinical presentation ranges from asymptomatic to acute kidney injury.

Purpose:

To outline the causes, clinical manifestations, and diagnostic indicators of interstitial nephritis.
To describe the treatment principles and prognosis for acute and chronic forms.
To highlight the potential for tubular dysfunction and progression to end-stage renal disease.

Summary:

Interstitial nephritis presents with diverse clinical outcomes and characteristic tubular disorders like proteinuria, phosphaturia, aminoaciduria, and metabolic acidosis.
Treatment focuses on eliminating causative agents; corticosteroids are beneficial in acute cases post-infection exclusion.
Chronic interstitial nephritis can involve glomeruli, potentially leading to end-stage renal failure requiring supportive management.

Impact:

Understanding interstitial nephritis aids in timely diagnosis and management, potentially preventing acute kidney injury.
Identifying and removing offending agents is crucial for favorable outcomes in acute settings.
Recognizing chronic forms allows for proactive management to slow progression towards end-stage renal disease.