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Related Concept Videos

Urinary Tract Infection II: Pathophysiology01:25

Urinary Tract Infection II: Pathophysiology

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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...
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Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

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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...
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Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

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

Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care

195
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...
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Urinary Tract Infection IV: Nursing Management01:17

Urinary Tract Infection IV: Nursing Management

339
In managing urinary tract infections (UTIs) in nursing, a comprehensive assessment is essential. Begin by gathering subjective data, such as the patient’s complaints of dysuria (painful urination), urinary frequency, urgency, suprapubic pain, and any lower abdominal discomfort. This information can be complemented by questions regarding previous UTIs, sexual activity, and personal hygiene practices, which can provide insight into risk factors. Objective assessment should focus on signs...
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Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

586
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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Subgroup Analysis of Pooled Phase 3 Efficacy Data from Two Randomized Trials of Gepotidacin Versus Nitrofurantoin in Uncomplicated Urinary Tract Infections (EAGLE-2 and EAGLE-3) including Participants with Uropathogens Not-Susceptible to Nitrofurantoin.

Clinical infectious diseases : an official publication of the Infectious Diseases Society of America·2026
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Plain language summary: efficacy and safety of gepotidacin, a new oral antibiotic, compared with nitrofurantoin, a commonly used oral antibiotic, for treating uncomplicated urinary tract infection.

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Related Experiment Video

Updated: Dec 26, 2025

Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
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Asymptomatic Bacteriuria and Pyuria in Premenopausal Women.

Thomas M Hooton1, Pacita L Roberts2, Ann E Stapleton2

  • 1Department of Medicine, University of Miami, Miami, Florida, USA.

Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America
|March 18, 2020
PubMed
Summary

Asymptomatic bacteriuria is uncommon in healthy women at high risk for recurrent urinary tract infections and rarely persists. Pyuria is common but not typically linked to infection, supporting no routine screening or treatment.

Keywords:
ASBUTIantimicrobial stewardshipasymptomatic bacteriuriapyuria

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Area of Science:

  • Urology
  • Infectious Diseases
  • Microbiology

Background:

  • Asymptomatic bacteriuria and pyuria in healthy women often lead to unnecessary antibiotic use.
  • Limited data exists on the prevalence and persistence of these conditions in at-risk populations.

Purpose of the Study:

  • To evaluate the prevalence and persistence of asymptomatic bacteriuria and pyuria.
  • To assess these conditions in healthy premenopausal women with a history of recurrent urinary tract infections.

Main Methods:

  • An observational cohort study was conducted over 3 months.
  • 104 healthy premenopausal women with recurrent UTIs were monitored daily for bacteriuria, pyuria, and symptoms.

Main Results:

  • Asymptomatic bacteriuria occurred in 45% of women, most commonly E. coli, lasting a median of 1 day.
  • Pyuria was present in 78% of participants on at least one day, but its positive predictive value for E. coli bacteriuria was low (4%).

Conclusions:

  • Asymptomatic bacteriuria is uncommon and short-lived in this population.
  • Pyuria is frequent but rarely indicates infection, supporting against routine screening and treatment in healthy, nonpregnant women.