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Related Concept Videos

Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care01:30

Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care

A healthcare provider can diagnose a urinary tract infection (UTI) through several methods:Medical History and Symptoms: The provider will take a detailed medical history and ask about symptoms such as frequent urination, burning sensation during urination, and lower abdominal pain.Urinalysis: A clean-catch urine sample is collected in a sterile container and tested for the presence of bacteria, white blood cells (leukocytes), nitrites, blood, and protein. The presence of leukocytes and...
Urinary Tract Infection II: Pathophysiology01:25

Urinary Tract Infection II: Pathophysiology

The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
Inhibitors of Bacterial DNA Synthesis01:28

Inhibitors of Bacterial DNA Synthesis

Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...
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...
Urinary Tract Infection I: Introduction01:26

Urinary Tract Infection I: Introduction

Urinary tract infections (UTIs) impact various parts of the urinary system, including the kidneys, ureters, bladder, and urethra. These infections are generally bacterial, with Escherichia coli being the most common causative agent, often originating from the gastrointestinal tract. However, other bacteria, such as Staphylococcus saprophyticus, Klebsiella pneumoniae, and Proteus mirabilis, are also known to cause UTIs. The type, location, and underlying complexity of the UTI guide both...
Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...

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Related Experiment Video

Updated: Jun 13, 2026

Transurethral Instillation Procedure in Adult Male Mouse
04:01

Transurethral Instillation Procedure in Adult Male Mouse

Published on: November 2, 2017

[From cystitis to bacterial prostatitis: experience with levofloxacin].

Vincenzo Mirone1

  • 1Clinica Urologica, Universita Federico II, Napoli, Italy.

Le Infezioni in Medicina
|April 29, 2010
PubMed
Summary

Urinary tract infections (UTIs) are a common nosocomial infection. Levofloxacin shows significant efficacy in urological infections due to its broad antimicrobial spectrum.

Area of Science:

  • Urology
  • Infectious Diseases
  • Pharmacology

Context:

  • Urinary tract infections (UTIs) are the most common nosocomial infection, accounting for 40% of hospital-acquired infections.
  • UTIs are the second most frequent infection in ambulatory settings and represent 20% of ambulatory uro-nephrologic diseases.
  • Current UTI classification includes acute lower UTIs, acute pyelonephritis, complicated UTIs, urosepsis, and special forms like prostatitis.

Purpose:

  • To review the classification and therapeutic significance of levofloxacin in urological infections.
  • To highlight the broad-spectrum activity of levofloxacin against Gram-positive and atypical microorganisms.

Summary:

  • UTIs are categorized into five main groups: acute uncomplicated lower UTIs, acute uncomplicated pyelonephritis, complicated UTIs, urosepsis, and special forms.

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Longitudinal Follow-Up of Urinary Tract Infections and Their Treatment in Mice using Bioluminescence Imaging
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Longitudinal Follow-Up of Urinary Tract Infections and Their Treatment in Mice using Bioluminescence Imaging

Published on: June 14, 2021

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Last Updated: Jun 13, 2026

Transurethral Instillation Procedure in Adult Male Mouse
04:01

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Published on: November 2, 2017

Longitudinal Follow-Up of Urinary Tract Infections and Their Treatment in Mice using Bioluminescence Imaging
07:39

Longitudinal Follow-Up of Urinary Tract Infections and Their Treatment in Mice using Bioluminescence Imaging

Published on: June 14, 2021

  • Levofloxacin is recognized by European urologists for its significant activity in treating urological infections.
  • The antimicrobial spectrum of levofloxacin extends to Gram-positive and atypical pathogens, making it a valuable therapeutic option.

    • Impact:

    • Provides a comprehensive overview of UTI classification and management strategies.
    • Emphasizes the role of levofloxacin as a key antibiotic in urological practice.
    • Contributes to understanding the therapeutic landscape of urinary tract infections and the utility of fluoroquinolones.