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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

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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

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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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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...
22
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

10
The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
10
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 II: Pathophysiology01:25

Urinary Tract Infection II: Pathophysiology

21
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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Related Experiment Video

Updated: Jul 31, 2025

Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
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Methenamine Prophylaxis for Recurrent Urinary Tract Infections in a Tertiary Referral Center.

Cameron Wade1, Mary E Lacy2, Lauren Harris1

  • 1University of Kentucky College of Medicine, Lexington, Kentucky.

Urology Practice
|May 5, 2023
PubMed
Summary

Methenamine hippurate (MH) effectively prevents recurrent urinary tract infections (UTIs) in women. This urinary antiseptic showed high success rates in both premenopausal and postmenopausal women, though catheter users had lower efficacy.

Keywords:
methenamineretrospective studiesurinary tract infections

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Area of Science:

  • Urology
  • Infectious Diseases
  • Pharmacology

Background:

  • Limited studies exist on Methenamine hippurate (MH) efficacy for urinary tract infection (UTI) prophylaxis.
  • Recurrent UTIs significantly impact women's quality of life.
  • There is a need for evidence-based strategies for UTI prevention.

Purpose of the Study:

  • To evaluate the real-world effectiveness of Methenamine hippurate (MH) for preventing recurrent uncomplicated urinary tract infections (UTIs).
  • To assess MH efficacy in different patient subgroups, including premenopausal and postmenopausal women.

Main Methods:

  • Retrospective chart review of adult patients prescribed MH between January 2013 and January 2019.
  • Inclusion criteria focused on women with recurrent uncomplicated UTIs.
  • Treatment success defined as 0-1 UTI in 6 months or 0-2 UTIs in 1 year.

Main Results:

  • Methenamine hippurate (MH) demonstrated high success rates: 83% in premenopausal and 77% in postmenopausal women.
  • Success rates were not significantly influenced by age, diabetes, immune suppression, or vaginal estrogen use.
  • Patients utilizing intermittent catheterization showed a lower success rate of 67%.

Conclusions:

  • Methenamine hippurate (MH) is an effective prophylactic agent for recurrent uncomplicated UTIs in women.
  • Lower success rates were observed in patients requiring catheterization.
  • Further prospective trials are recommended to solidify evidence for treatment guidelines and insurance coverage.