Urinary tract infection: Difference between revisions

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==Diagnosis==
==Diagnosis==
The best [[symptom]]s and [[physical examination]] findings for diagnosis have been identified in a [[systematic review]] by the [http://sgim.org/index.cfm?pageId=666 Rational Clinical Examination].<ref name="pmid12020306">{{cite journal |author=Bent S, Nallamothu BK, Simel DL, Fihn SD, Saint S |title=Does this woman have an acute uncomplicated urinary tract infection? |journal=JAMA |volume=287 |issue=20 |pages=2701–10 |year=2002 |pmid=12020306 |doi= |url=http://jama.ama-assn.org/cgi/pmidlookup?view=long&pmid=12020306 |issn=}}</ref>
The best [[symptom]]s and [[physical examination]] findings for diagnosis have been identified in a [[systematic review]] by the [http://sgim.org/index.cfm?pageId=666 Rational Clinical Examination] in 2002.<ref name="pmid12020306">{{cite journal |author=Bent S, Nallamothu BK, Simel DL, Fihn SD, Saint S |title=Does this woman have an acute uncomplicated urinary tract infection? |journal=JAMA |volume=287 |issue=20 |pages=2701–10 |year=2002 |pmid=12020306 |doi= |url=http://jama.ama-assn.org/cgi/pmidlookup?view=long&pmid=12020306 |issn=}}</ref>
 
Regarding symptoms, a subsequent study  and [[clinical prediction rule]] found the best findings are urine cloudiness, offensive smell, moderately severe dysuria, moderately severe nocturia.<ref name="pmid19364448">{{cite journal| author=Little P, Turner S, Rumsby K, Warner G, Moore M, Lowes JA et al.| title=Dipsticks and diagnostic algorithms in urinary tract infection: development and validation, randomised trial, economic analysis, observational cohort and qualitative study. | journal=Health Technol Assess | year= 2009 | volume= 13 | issue= 19 | pages= iii-iv, ix-xi, 1-73 | pmid=19364448
| url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&retmode=ref&cmd=prlinks&id=19364448 | doi=10.3310/hta13190 }}  [http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&retmode=ref&cmd=prlinks&id=19794030 Review in: Evid Based Med. 2009 Oct;14(5):155] <!--Formatted by http://sumsearch.uthscsa.edu/cite/--></ref>
 
A subsequent study and [[clinical prediction rule]] showed the best predictors were urinary nitrite, leucocyte esterase and blood.<ref name="pmid19364448">{{cite journal| author=Little P, Turner S, Rumsby K, Warner G, Moore M, Lowes JA et al.| title=Dipsticks and diagnostic algorithms in urinary tract infection: development and validation, randomised trial, economic analysis, observational cohort and qualitative study. | journal=Health Technol Assess | year= 2009 | volume= 13 | issue= 19 | pages= iii-iv, ix-xi, 1-73 | pmid=19364448
| url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&retmode=ref&cmd=prlinks&id=19364448 | doi=10.3310/hta13190 }}  [http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&retmode=ref&cmd=prlinks&id=19794030 Review in: Evid Based Med. 2009 Oct;14(5):155] <!--Formatted by http://sumsearch.uthscsa.edu/cite/--></ref>  


Urinary tract infections may be overdiagnosed in [[geriatrics|geriatric]] patients.<ref name="pmid19054190">{{cite journal |author=Woodford HJ, George J |title=Diagnosis and Management of Urinary Tract Infection in Hospitalized Older People |journal=J Am Geriatr Soc |volume= |issue= |pages= |year=2008 |month=November |pmid=19054190 |doi=10.1111/j.1532-5415.2008.02073.x |url=http://dx.doi.org/10.1111/j.1532-5415.2008.02073.x |issn=}}</ref>
Urinary tract infections may be overdiagnosed in [[geriatrics|geriatric]] patients.<ref name="pmid19054190">{{cite journal |author=Woodford HJ, George J |title=Diagnosis and Management of Urinary Tract Infection in Hospitalized Older People |journal=J Am Geriatr Soc |volume= |issue= |pages= |year=2008 |month=November |pmid=19054190 |doi=10.1111/j.1532-5415.2008.02073.x |url=http://dx.doi.org/10.1111/j.1532-5415.2008.02073.x |issn=}}</ref>

Revision as of 22:19, 7 October 2009

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In medicine, urinary tract infections are "inflammatory responses of the epithelium of the urinary tract to microbial invasions. They are often bacterial infections with associated bacteriuria and pyuria."[1]

Classification

More common types of urinary tract infections in include:

Cause

Males

In males, urinary tract infections are usually secondary to an underlying cause such as benign prostatic hyperplasia or genitourinary instrumentation.[2] However, a single episode is unlikely to be due to a serious underlying cause.[3]

Diagnosis

The best symptoms and physical examination findings for diagnosis have been identified in a systematic review by the Rational Clinical Examination in 2002.[4]

Regarding symptoms, a subsequent study and clinical prediction rule found the best findings are urine cloudiness, offensive smell, moderately severe dysuria, moderately severe nocturia.[5]

A subsequent study and clinical prediction rule showed the best predictors were urinary nitrite, leucocyte esterase and blood.[5]

Urinary tract infections may be overdiagnosed in geriatric patients.[6]

References

  1. Anonymous (2024), Urinary tract infection (English). Medical Subject Headings. U.S. National Library of Medicine.
  2. Lipsky BA (January 1989). "Urinary tract infections in men. Epidemiology, pathophysiology, diagnosis, and treatment". Ann. Intern. Med. 110 (2): 138–50. PMID 2462391[e]
  3. Abarbanel J, Engelstein D, Lask D, Livne PM (July 2003). "Urinary tract infection in men younger than 45 years of age: is there a need for urologic investigation?". Urology 62 (1): 27–9. PMID 12837416[e]
  4. Bent S, Nallamothu BK, Simel DL, Fihn SD, Saint S (2002). "Does this woman have an acute uncomplicated urinary tract infection?". JAMA 287 (20): 2701–10. PMID 12020306[e]
  5. 5.0 5.1 Little P, Turner S, Rumsby K, Warner G, Moore M, Lowes JA et al. (2009). "Dipsticks and diagnostic algorithms in urinary tract infection: development and validation, randomised trial, economic analysis, observational cohort and qualitative study.". Health Technol Assess 13 (19): iii-iv, ix-xi, 1-73. DOI:10.3310/hta13190. PMID 19364448. Research Blogging. Review in: Evid Based Med. 2009 Oct;14(5):155
  6. Woodford HJ, George J (November 2008). "Diagnosis and Management of Urinary Tract Infection in Hospitalized Older People". J Am Geriatr Soc. DOI:10.1111/j.1532-5415.2008.02073.x. PMID 19054190. Research Blogging.