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Urinary tract infections
1. DR. ASMATULLAH SAPAND
GENERAL MEDICAL SPECIALIST
A H M A D S H A H A B D A L I
I N S T U T U T E O F H I G H E R
E D U C A T I O N
D E P A R T M E N T O F
I N T E R N A L M E D I C I N E K H O S T
A F G H A N I S T A N
2.
3. URINARY TRACT INFECTION (UTI)
OR GENITOURINARY TRACT INFECTION:
• Definition: Presence and multiplication of infectious
organism in the urinary tract as evidenced by
presence of >100000 infectious agents per 1ml of the
midstream urine is called UTIs.
• Prevalence of UTIs is common in women ((3% at age
20 and increasing by about 1% in each subsequent
decade)), but uncommon in males except of first year
of age and men of over 60 years old.
6. PATHOGENESIS OF UTI:
1. ROUTE OF SPREAD:
• Ascending transurethral route
• Blood stream
• Lymphatics
• Direct extension
2.Periurethral area is heavily colonized with bacteria
derived from fecal flora. This may be facilitated by lack
of personal hygiene and local infections e.g. vaginitis.
7. TYPES OF UTI:
1. Uncomplicated UTI: when infection occurs in a
patient without any functional and anatomic
abnormality or instrumentation of the urinary tract
is called UcUTI.
2. Complicated UTIs: when infection occurs in a
patient with abnormal urinary tracts e.g. with stones
or associated disease e.g. DM or others is called
CUTI.
3. Recurrent UTIs: Repeated episodes of UTIs either
complicated or uncomplicated.
4. Catheter-associated UTIs (CAUTI)
5. According to Location: Upper UTI
(kidneys&ureters) and Lower UTI (urinary bladder,
Prostate and urethra)
8. CLINICAL SYNDROMES OF UTI:
The most important issue to be addressed when a UTI is
suspected is the characterization of the clinical
syndrome as:
• ASB (Asymptomatic bacteruria)
• Uncomplicated Cystitis, Pyelonephritis, Prostatitis
• Epididymitis
• Complicated UTI.
This information will shape the diagnostic and
therapeutic approach.
9. CLINICAL SYNDROMES OF UTI:
1. ASYMPTOMATIC BACTERURIA:
A diagnosis of ASB can be considered only:
• when the patient does not have local or systemic
symptoms referable to the urinary tract.
• The clinical presentation is usually that of a patient
who undergoes a screening urine culture for a reason
unrelated to the genitourinary tract and is
incidentally found to have bacteriuria (>100000/ml)
10. CLINICAL SYNDROMES OF UTI:
2. ACUTE CYSTITIS:
The typical symptoms of cystitis are:
• Dysuria, Urinary frequency, and Urgency.
• Nocturia, hesitancy, suprapubic discomfort, and
gross hematuria are often noted as well.
• Unilateral back or flank pain is generally an
indication that the upper urinary tract is involved.
Fever also is an indication of invasive infection of
either the kidney or the prostate.
11. CLINICAL SYNDROMES OF UTI:
3. PYELONEPHRITIS (Acute/Chronic):
• Mild pyelonephritis can present as: low-grade fever with
or without lower-back or costovertebral-angle pain.
• Severe pyelonephritis can manifest as high fever, rigors,
nausea, vomiting, and flank and/or loin pain. Symptoms
are generally acute in onset, and symptoms of cystitis may
not be present.
• Fever is the main feature distinguishing cystitis and
pyelonephritis.
• The fever of pyelonephritis typically exhibits a high
spiking “picket-fence” pattern and resolves over 72 h of
therapy.
• Complications: Chronic pyelonephritis, emphysematous-
pyelonephritis and intraparenchymal abscess.
12. CLINICAL SYNDROMES OF UTI:
4. PROSTATITIS (Acute/Chronic):
• Prostatitis includes both infectious and noninfectious
abnormalities of the prostate gland. Infections can be
acute or chronic, are almost always bacterial in
nature, and are far less common than the
noninfectious entity chronic pelvic pain syndrome
(formerly known as chronic prostatitis).
• Acute bacterial prostatitis presents as dysuria,
frequency, and pain in the prostatic pelvic or perineal
area.
• Fever and chills are usually present, and symptoms of
bladder outlet obstruction are common.
13. CLINICAL SYNDROMES OF UTI:
5. ACUTE EPIDIDYMITIS:
The typical symptoms of epididymitis are:
• Dysuria, Urinary frequency, and Urgency
• Fever
• Scrotal pain that radiates along the spermatic cord or
to the flank
14. CLINICAL SYNDROMES OF UTI:
6. COMPLICATED UTI:
Complicated UTI presents as:
• Symptomatic episode of cystitis or pyelonephritis in a
man or woman with an anatomic predisposition to
infection, with a foreign body in the urinary tract, or
with factors predisposing to a delayed response to
therapy.
20. DIFFERENTIAL DIAGNOSIS OF UTI SYNDROMES:
1. DDX of CYSTITIS:
• Vulvovaginitis
• Pelvic inflammatory disease (PID)
• Urethritis and prostatitis
• Noninfectious causes of cystitis-like symptoms
(irradiation, chemotherapy, bladder carcinoma)
• DDx of cystitis from above conditions is done by U/S
and Urinalysis.
21. DIFFERENTIAL DIAGNOSIS OF UTI SYNDROMES:
2. DDX of PYELONEPHRITIS:
• Cystitis
• Prostatitis
• Urethritis
• Epididymitis
• Acute appendicitis
• Acute cholecystitis
• Acute pancreatitis
• diverticulitis
22. DIFFERENTIAL DIAGNOSIS OF UTI SYNDROMES:
3. DDX of BACTERIAL PROSTATITIS:
• Prostatic enlargement
• Pyelonephritis
• Epididymitis
• Diverticulitis
23. DIFFERENTIAL DIAGNOSIS OF UTI SYNDROMES:
4. DDX of NON-BACTERIAL PROSTATITIS:
• Chronic bacterial prostatitis
• Bladder cancer
24. DIFFERENTIAL DIAGNOSIS OF UTI SYNDROMES:
4. DDX of EPIDIDYMITIS:
• Testicular Tumor
• Testicular torsion
25. TREATMENT OF UTI SYNDROMES:
• The choice of antimicrobial agent and the dose and
duration of therapy depend on the site of infection
and the presence or absence of complicating
conditions.
• Patients should be advised to take about 2 liters of
fluid daily and empty their bladder before retiring
and before and after intercourse.
• For Drug therapy, Refer to the Next Slides…………
28. REFERENCES:
• Harrison’s principles of internal medicine 19th 2015-2018
• Current medical diagnosis and treatment 56th 2017
• Short text book of medical diagnosis and management 11th e
• Davidson’s principles and practice of medicine 22nd 2015-2018