Pyelonephritis overview: Difference between revisions

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==Differential Diagnosis==
==Differential Diagnosis==
Cystitis must be differentiated from other causes of [[dysuria]] such as [[Cystitis]], [[urethritis]], [[prostatitis]], [[vulvovaginitis]], [[urethral stricture]]s or diverticula, [[benign prostatic hyperplasia]] and [[neoplasm]]s such as [[renal cell carcinoma]] and cancers of the bladder, prostate, and penis.<ref name="pmid11989635">{{cite journal| author=Bremnor JD, Sadovsky R| title=Evaluation of dysuria in adults. | journal=Am Fam Physician | year= 2002 | volume= 65 | issue= 8 | pages= 1589-96 | pmid=11989635 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11989635  }} </ref><ref name="pmid9606306">{{cite journal| author=Kurowski K| title=The woman with dysuria. | journal=Am Fam Physician | year= 1998 | volume= 57 | issue= 9 | pages= 2155-64, 2169-70 | pmid=9606306 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9606306  }} </ref>
Cystitis must be differentiated from other causes of [[dysuria]] such as [[Cystitis]], [[urethritis]], [[prostatitis]], [[vulvovaginitis]], [[urethral stricture]]s or diverticula, [[benign prostatic hyperplasia]] and [[neoplasm]]s such as [[renal cell carcinoma]] and cancers of the bladder, prostate, and penis.<ref name="pmid11989635">{{cite journal| author=Bremnor JD, Sadovsky R| title=Evaluation of dysuria in adults. | journal=Am Fam Physician | year= 2002 | volume= 65 | issue= 8 | pages= 1589-96 | pmid=11989635 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11989635  }} </ref><ref name="pmid9606306">{{cite journal| author=Kurowski K| title=The woman with dysuria. | journal=Am Fam Physician | year= 1998 | volume= 57 | issue= 9 | pages= 2155-64, 2169-70 | pmid=9606306 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9606306  }} </ref>
==Epidemiology and Demographics==
Urinary tract infections are the most frequent [[bacterial infection]] in women.Females are more commonly affected with pyelonephritis than males.<ref name="pmid9606306">{{cite journal| author=Kurowski K| title=The woman with dysuria. | journal=Am Fam Physician | year= 1998 | volume= 57 | issue= 9 | pages= 2155-64, 2169-70 | pmid=9606306 | doi= | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9606306  }} </ref>.<ref name="pmid15206056">{{cite journal| author=Hooton TM, Besser R, Foxman B, Fritsche TR, Nicolle LE| title=Acute uncomplicated cystitis in an era of increasing antibiotic resistance: a proposed approach to empirical therapy. | journal=Clin Infect Dis | year= 2004 | volume= 39 | issue= 1 | pages= 75-80 | pmid=15206056 | doi=10.1086/422145 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15206056  }} </ref>


==Risk Factors==
==Risk Factors==

Revision as of 21:27, 23 January 2017

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Pyelonephritis is an ascending urinary tract infection that has reached the pyelum (pelvis) of the kidney (nephros in Greek). If the infection is severe, the term "urosepsis" is used interchangeably (sepsis being a systemic inflammatory response syndrome due to infection). It requires antibiotics as therapy, and treatment of any underlying causes to prevent recurrence. It is a form of nephritis. It can also be called pyelitis.[1].

Epidemiology and Demographics

Pyelonephritis is very common, with 120-130 cases annually per 100,000 women and 30-40 cases per 100,000 men. [2]

Historical Perspective

Urinary tract infections have been described since ancient times with the first documented description in the Ebers Papyrus dated to c. 1550 BC. In 1836, Philadelphia surgeon Joseph Parrish published the earliest record of three cases of severe lower urinary tract symptoms without the presence of a bladder stone.[3]

Classification

Pathophysiology

[4]

Causes

Most of cases of Pyelonephritis are caused by escherichia coli ("E. coli"), a bacterium found in the lower gastrointestinal tract. Other causes of cystitis include certain medications, diabetes, Crohn's disease, iatrogenic causes, endometriosis, pelvic inflammatory disease, urinary obstruction, and bladder incontinence.

Differential Diagnosis

Cystitis must be differentiated from other causes of dysuria such as Cystitis, urethritis, prostatitis, vulvovaginitis, urethral strictures or diverticula, benign prostatic hyperplasia and neoplasms such as renal cell carcinoma and cancers of the bladder, prostate, and penis.[5][6]

Risk Factors

Common risk factors in the development of pyelonephritis include urinary catheters, bladder stones, diabetes, pregnancy, catheterization, bowel incontinence, old age, and immobility.

Natural History, Complications, and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Treatment

Medical Treatment

Treatment of Pyelonephritis is usually medical. In case of any risk factors like catheters or obstructing stones or masses, the management includes removing the risk factors to prevent further progress of the disease and the pathogen accumulation.

Surgery

In recurrent infections, additional investigations may identify an underlying abnormality. Occasionally, surgical intervention is necessary to improve chances of recurrence.

References

  1. Ramakrishnan K, Scheid DC (2005). "Diagnosis and management of acute pyelonephritis in adults". Am Fam Physician. 71 (5): 933–42. PMID 15768623.
  2. Czaja CA, Scholes D, Hooton TM, Stamm WE (2007). "Population-based epidemiologic analysis of acute pyelonephritis". Clin. Infect. Dis. 45 (3): 273–80. doi:10.1086/519268. PMID 17599303.
  3. Interstitial Cystitis. Wikipedia.https://en.wikipedia.org/wiki/Interstitial_cystitis#History Accessed on February 8, 2016
  4. Hooton TM (2000). "Pathogenesis of urinary tract infections: an update". J Antimicrob Chemother. 46 Suppl A: 1–7. PMID 10969044.
  5. Bremnor JD, Sadovsky R (2002). "Evaluation of dysuria in adults". Am Fam Physician. 65 (8): 1589–96. PMID 11989635.
  6. Kurowski K (1998). "The woman with dysuria". Am Fam Physician. 57 (9): 2155–64, 2169–70. PMID 9606306.

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