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By Belete N(Bsc, Msc in AHN)
DBU
By: Belete N 1
Urinary Tract Infections
Is an infection of the urinary tract caused by the
presence of pathogenic microorganism in the
urinary tract with or without signs & symptoms
The most common sites of infections
Urethra – Urethritis
Bladder – Cystitis Lower UTI
Prostate – Prostatitis
Ureter – Ureteritis
Renal pelvis– Pyelonephritis Upper UTI
Kidney-Interstitial nephritis
Renal abscess
By: Belete N 2
Urinary Tract Infections…
Risk factors
Iatrogenic/Drugs
Indwelling catheter
Antibiotic use and spermicides
Behavioral
Voiding dysfunction
Frequent or recent sexual intercourse
Anatomic/physiologic
Vesico-urethral reflux
Female sex and Pregnancy
By: Belete N 3
Urinary Tract Infections…
Genetic
Susceptible uroepithelial cells(secrete less
IgA)
Vaginal mucus properties
Etiology
Ascending infections (that enter via urinary
meatus)
Obstructive abnormalities (strictures,
prostatic tumors or hyperplasia)
Upper urinary tract disease may occasionally
cause recurrent bladder infections
By: Belete N 4
Urinary Tract Infections…
Pathophysiology
The bacteria causing UTIs usually originate from
bowel flora of the host acquired via three
possible routes
Ascending
Hematogenous or
Lymphatic pathways
Three factors determine the development of
UTIs
The size of the inoculum
Virulence of the microorganism, and
Competency of the natural host defense
By: Belete N 5
Urinary Tract Infections…
An important virulence factor of bacteria is their ability
to adhere to urinary epithelial cells by fimbriae
Other virulence factors include hemolysin, a cytotoxic
protein produced by bacteria
Lyses a wide range of cells including
erythrocytes, polymorphonuclear leukocytes, and
monocytes ; and aerobactin
★Facilitates the binding and uptake of iron by
Escherichia coli
By: Belete N 6
Urinary Tract Infections…
The most common cause of uncomplicated UTIs is E.
coli
Accounting for more than 85% of community
acquired infections
Sign and symptoms
Dysuria, frequency, urgency, and nocturia
Suprapubic pain and discomfort
Hematuria and back pain
Syndromes of urosepsis- If complicated
Diagnosis
1. Urine dipstick-may react positively for blood WBC
2. Urine microscopy- shows RBC and many WBC-
HPF By: Belete N 7
Urinary Tract Infections…
Other Classification
Uncomplicated UTI
UTI that occurs in individuals who lack
structural or functional abnormalities in the UT
that interfere with the normal flow of urine
★Mostly in healthy females of childbearing
age
Complicated UTI
UTI that occurs in individuals with structural
or functional abnormalities i.e. congenital
distortion of the UT, a stone, a catheter,
prostatic hypertrophy, obstruction, or
neurological deficit
★UTI in men are usually complicated-why?
By: Belete N 8
Urinary Tract Infections…
Recurrent UTI
Refers to multiple symptomatic UTIs with
asymptomatic periods in between
It is considered significant when there is two
or more symptomatic episodes per year or it
interferes with patient’s quality of life
It is usually a reinfection than a relapse
By: Belete N 9
Urinary Tract Infections…
Management
The management of a patient with a UTI includes
Initial evaluation
Selection of an antibacterial agent and
duration of therapy, and
Follow-up evaluation
Selection of antimicrobial agent for the treatment
of UTI is based on
The severity of the presenting signs and
symptoms
The site of infection
Whether the infection is complicated or
uncomplicated
By: Belete N 10
Urinary Tract Infections…
The general Management principle includes
1. Relieve discomfort and provide rest
(catheterization if needed)
2. Antibiotic
3. Follow up culture to prove treatment
effectiveness
4. Increase fluid intake- water is best
5. Avoid irritants - Coffee, tea, alcohol, cola
drinks
6. Promote urinary output- Q 2 to 3 hrs
By: Belete N 11
Urinary Tract Infections…
Antibiotic therapy according to ESTG
Acute, uncomplicated UTI in women
First line:
★Ciprofloxacin, 500mg P.O., BID, for 3 days
or
★Norfloxacin, 400mg P.O.,BID, for 3 days.
Alternatives:
★Nitrofurantoin 50mg P.O., QID for 7 days or
★Cotrimoxazole 160/800mg P.O, BID for 3
By: Belete N 12
Pyelonephritis
Pyelonephritis is an inflammation of the renal pelvis,
calyces, and medulla
The infection usually arises in the lower urinary tract
with organisms ascending into the renal pelvis
Begins in the interstitium & rapidly extending to
involve the tubules, glomeruli & blood vessels
Classifications
Acute pyelonephritis
Chronic pyelonephritis
By: Belete N 13
Pyelonephritis…
Acute pyelonephritis
It is sudden onset & self-limited bacterial disease
of the kidneys.
Etiology
Bacteria: E-coli (80%), Proteus, Pseudomonas,
S. aures, Strep. faecalis (entrococcus)
Procedures: Catheterization, Cystoscopy,
Urologic surgery
Systemic infections (such as tuberculosis)
Other causes: Urinary obstruction, Neurogenic
bladder (Vesicourethral reflux)
By: Belete N 14
Pyelonephritis…
Acute pyelonephritis is an active bacterial infection
that can cause:
Interstitial inflammation
Tubular cell necrosis
Abscess formation in the capsule, cortex, or
medulla
Temporarily altered renal function, and may
rarely progresses to renal failure
By: Belete N 15
Pyelonephritis…
Risk Factors
Women over 65 years of age
Older men with prostate problems
Chronic urinary stone disorders
Spinal cord injury
Pregnancy
Congenital malformations
Bladder tumors
Chronic illness (diabetes mellitus,
hypertension, chronic cystitis)
By: Belete N 16
Pyelonephritis…
Clinical Manifestation
Flank pain
Low back pain
Costovertebral angle tenderness
Dysuria (Painful or difficulty of urination)
Nocturia, hematuria, cloudy urine with fishy
odor
Burning, urgency, frequency, nocturia
Shaking chills, generalized fatigue
Fever, tachycardia, tachypnea
Anorexia, nausea and vomiting, headache,
malaise By: Belete N 17
Pyelonephritis…
Diagnosis
Appropriate history taking, & Physical
examination
Urinalysis:
Dark color, cloudy appearance, foul odor
Proteinuria, glycosuria, rarely ketonuria
Leucocytes, Few red blood cell
Casts, decreased urine specific gravity
Positive leukocyte esterase (85 to 90%
specific)
Positive nitrate (95% specific)
Urine culture reveals the causative organism
By: Belete N 18
Pyelonephritis…
Diagnosis…
CBC
Elevated WBC (>10,000mm3), elevated
neutrophils
Erythrocyte sedimentation rate (ESR) will be
elevated
Intravenous pyelogram
If functional and structural renal abnormalities
are suspected (calculi, structural, or vascular
abnormalities)
Ultrasound or CT scan
Radionuclide imaging
May be useful to identify sites of infection that
By: Belete N 19
Pyelonephritis…
Complications
Secondary arteriosclerosis
Calculi formation
Renal damage
Renal abscess
★Metastasize to the other organs
Septic shock
Chronic pyelonephritis
Chronic renal failure
Hypertension
By: Belete N 20
Pyelonephritis…
Medical Management
According to ESTG
Acute uncomplicated Pyelonephritis in non-pregnant
women:
Mild and moderate acute uncomplicated
pyelonephritis (able to tolerate oral therapy with no
vomiting, no dehydration, no evidence of sepsis):
First line
★Ciprofloxacin, 500mg P.O., BID, oral for 7-10
days
Alternatives
★Cotrimoxazole(Trimethoprim-
sulphamethoxazole), 160/800mg P.O, BID for 14
days
By: Belete N 21
Pyelonephritis…
Severe acute uncomplicated pyelonephritis
(high fever, high white blood cell count, vomiting,
dehydration, or evidence of sepsis) or fails to
improve during an initial outpatient treatment
period
Intravenous therapy should be started and
continued until the patient improves (usually
at 48–72 hours)
On discharge oral therapy is continued to
complete 10-14 days course
Antibiotics should be started after urine
culture sample is collected
By: Belete N 22
Pyelonephritis…
First line
Ciprofloxacin, 400mg, I.V, BID till patient
improves and continue oral ciprofloxacin
500mg, PO, BID to complete 10-14 days
course
Alternatives
Ceftriaxone, 2gm, I.V, daily or 1gm, I.V, BID
till patient improves and continue oral
ciprofloxacin 500mg, PO, BID to complete 10-
14 days course
If no response in 48-72 hrs. ultrasound is
warranted therapy to evaluate for obstruction,
abscess, or other complications of pyelonephritis
By: Belete N 23
Pyelonephritis…
Complicated UTIs and UTI in men-similar to
uncomplicated UTIs but needs prolonged duration
Recurrent UTI in women
First line: Cotrimoxazole, 240mg, P.O., daily or 3x
per week or postcoital
Alternatives:
★Cephalexin, 125–250mg, P.O., once daily or
postcoital or
★Norfloxacin, 200mg, P.O., once daily or
postcoital or
★Ciprofloxacin, 125mg, P.O., once daily or
postcoital
Duration of antibiotics-for six months followed by
observation
If recurrent UTI comes again the prophylaxis can be
prolonged for 1-2years By: Belete N 24
Pyelonephritis…
Nursing interventions
Administer antipyretic & Antibiotics
Fluids (2-3 L/d) to empty the bladder of
contaminated urine & prevent calculus formation
Catheterize with strict sterile technique
Instruct the patient to perform appropriate perineal
care
Teach proper technique for collecting a clean catch
urine specimen
Emotional support
Personal hygiene
Advice routine checkups for patient with history of
UTIs By: Belete N 25
Pyelonephritis…
Chronic pyelonephritis
It is a persistent inflammation of kidneys
Repeated infections that cause progressive
inflammation & scarring
Etiology:
Bacteria
Urinary obstruction
Vesicourethral reflux
By: Belete N 26
Pyelonephritis…
Clinical manifestations
Usually have no symptoms of infection
Noticeable signs
★Fatigue
★Headache
★Poor appetite
Polyuria /Low specific gravity of urine/
Excessive thirst
Weight loss
Flank pain
By: Belete N 27
Pyelonephritis…
Diagnosis
History taking & physical examination
Laboratory investigations
Urinalysis
Proteinuria (Albuminuria)
Intermittent bacteriuria
Leukocytes in urine
Low specific gravity of urine
Urine culture to identify the pathogen
Blood
 Decreased Hgb
 Measuring BUN & creatinine/may increase
 Decrease HCI
Radiologic IV Urogram
By: Belete N 28
Pyelonephritis…
Complications
End-stage renal disease (from progressive
loss of nephrons secondary to chronic
inflammation and scarring)
Hypertension
Formation of kidney stones (from chronic
infection with urea-splitting organisms)
Management
The same as acute pyelonephritis (Long-term
use)
Monitor HTN
Monitor intake and out put
By: Belete N 29
The End
By: Belete N 30

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Urinary Tract Infection

  • 1. By Belete N(Bsc, Msc in AHN) DBU By: Belete N 1
  • 2. Urinary Tract Infections Is an infection of the urinary tract caused by the presence of pathogenic microorganism in the urinary tract with or without signs & symptoms The most common sites of infections Urethra – Urethritis Bladder – Cystitis Lower UTI Prostate – Prostatitis Ureter – Ureteritis Renal pelvis– Pyelonephritis Upper UTI Kidney-Interstitial nephritis Renal abscess By: Belete N 2
  • 3. Urinary Tract Infections… Risk factors Iatrogenic/Drugs Indwelling catheter Antibiotic use and spermicides Behavioral Voiding dysfunction Frequent or recent sexual intercourse Anatomic/physiologic Vesico-urethral reflux Female sex and Pregnancy By: Belete N 3
  • 4. Urinary Tract Infections… Genetic Susceptible uroepithelial cells(secrete less IgA) Vaginal mucus properties Etiology Ascending infections (that enter via urinary meatus) Obstructive abnormalities (strictures, prostatic tumors or hyperplasia) Upper urinary tract disease may occasionally cause recurrent bladder infections By: Belete N 4
  • 5. Urinary Tract Infections… Pathophysiology The bacteria causing UTIs usually originate from bowel flora of the host acquired via three possible routes Ascending Hematogenous or Lymphatic pathways Three factors determine the development of UTIs The size of the inoculum Virulence of the microorganism, and Competency of the natural host defense By: Belete N 5
  • 6. Urinary Tract Infections… An important virulence factor of bacteria is their ability to adhere to urinary epithelial cells by fimbriae Other virulence factors include hemolysin, a cytotoxic protein produced by bacteria Lyses a wide range of cells including erythrocytes, polymorphonuclear leukocytes, and monocytes ; and aerobactin ★Facilitates the binding and uptake of iron by Escherichia coli By: Belete N 6
  • 7. Urinary Tract Infections… The most common cause of uncomplicated UTIs is E. coli Accounting for more than 85% of community acquired infections Sign and symptoms Dysuria, frequency, urgency, and nocturia Suprapubic pain and discomfort Hematuria and back pain Syndromes of urosepsis- If complicated Diagnosis 1. Urine dipstick-may react positively for blood WBC 2. Urine microscopy- shows RBC and many WBC- HPF By: Belete N 7
  • 8. Urinary Tract Infections… Other Classification Uncomplicated UTI UTI that occurs in individuals who lack structural or functional abnormalities in the UT that interfere with the normal flow of urine ★Mostly in healthy females of childbearing age Complicated UTI UTI that occurs in individuals with structural or functional abnormalities i.e. congenital distortion of the UT, a stone, a catheter, prostatic hypertrophy, obstruction, or neurological deficit ★UTI in men are usually complicated-why? By: Belete N 8
  • 9. Urinary Tract Infections… Recurrent UTI Refers to multiple symptomatic UTIs with asymptomatic periods in between It is considered significant when there is two or more symptomatic episodes per year or it interferes with patient’s quality of life It is usually a reinfection than a relapse By: Belete N 9
  • 10. Urinary Tract Infections… Management The management of a patient with a UTI includes Initial evaluation Selection of an antibacterial agent and duration of therapy, and Follow-up evaluation Selection of antimicrobial agent for the treatment of UTI is based on The severity of the presenting signs and symptoms The site of infection Whether the infection is complicated or uncomplicated By: Belete N 10
  • 11. Urinary Tract Infections… The general Management principle includes 1. Relieve discomfort and provide rest (catheterization if needed) 2. Antibiotic 3. Follow up culture to prove treatment effectiveness 4. Increase fluid intake- water is best 5. Avoid irritants - Coffee, tea, alcohol, cola drinks 6. Promote urinary output- Q 2 to 3 hrs By: Belete N 11
  • 12. Urinary Tract Infections… Antibiotic therapy according to ESTG Acute, uncomplicated UTI in women First line: ★Ciprofloxacin, 500mg P.O., BID, for 3 days or ★Norfloxacin, 400mg P.O.,BID, for 3 days. Alternatives: ★Nitrofurantoin 50mg P.O., QID for 7 days or ★Cotrimoxazole 160/800mg P.O, BID for 3 By: Belete N 12
  • 13. Pyelonephritis Pyelonephritis is an inflammation of the renal pelvis, calyces, and medulla The infection usually arises in the lower urinary tract with organisms ascending into the renal pelvis Begins in the interstitium & rapidly extending to involve the tubules, glomeruli & blood vessels Classifications Acute pyelonephritis Chronic pyelonephritis By: Belete N 13
  • 14. Pyelonephritis… Acute pyelonephritis It is sudden onset & self-limited bacterial disease of the kidneys. Etiology Bacteria: E-coli (80%), Proteus, Pseudomonas, S. aures, Strep. faecalis (entrococcus) Procedures: Catheterization, Cystoscopy, Urologic surgery Systemic infections (such as tuberculosis) Other causes: Urinary obstruction, Neurogenic bladder (Vesicourethral reflux) By: Belete N 14
  • 15. Pyelonephritis… Acute pyelonephritis is an active bacterial infection that can cause: Interstitial inflammation Tubular cell necrosis Abscess formation in the capsule, cortex, or medulla Temporarily altered renal function, and may rarely progresses to renal failure By: Belete N 15
  • 16. Pyelonephritis… Risk Factors Women over 65 years of age Older men with prostate problems Chronic urinary stone disorders Spinal cord injury Pregnancy Congenital malformations Bladder tumors Chronic illness (diabetes mellitus, hypertension, chronic cystitis) By: Belete N 16
  • 17. Pyelonephritis… Clinical Manifestation Flank pain Low back pain Costovertebral angle tenderness Dysuria (Painful or difficulty of urination) Nocturia, hematuria, cloudy urine with fishy odor Burning, urgency, frequency, nocturia Shaking chills, generalized fatigue Fever, tachycardia, tachypnea Anorexia, nausea and vomiting, headache, malaise By: Belete N 17
  • 18. Pyelonephritis… Diagnosis Appropriate history taking, & Physical examination Urinalysis: Dark color, cloudy appearance, foul odor Proteinuria, glycosuria, rarely ketonuria Leucocytes, Few red blood cell Casts, decreased urine specific gravity Positive leukocyte esterase (85 to 90% specific) Positive nitrate (95% specific) Urine culture reveals the causative organism By: Belete N 18
  • 19. Pyelonephritis… Diagnosis… CBC Elevated WBC (>10,000mm3), elevated neutrophils Erythrocyte sedimentation rate (ESR) will be elevated Intravenous pyelogram If functional and structural renal abnormalities are suspected (calculi, structural, or vascular abnormalities) Ultrasound or CT scan Radionuclide imaging May be useful to identify sites of infection that By: Belete N 19
  • 20. Pyelonephritis… Complications Secondary arteriosclerosis Calculi formation Renal damage Renal abscess ★Metastasize to the other organs Septic shock Chronic pyelonephritis Chronic renal failure Hypertension By: Belete N 20
  • 21. Pyelonephritis… Medical Management According to ESTG Acute uncomplicated Pyelonephritis in non-pregnant women: Mild and moderate acute uncomplicated pyelonephritis (able to tolerate oral therapy with no vomiting, no dehydration, no evidence of sepsis): First line ★Ciprofloxacin, 500mg P.O., BID, oral for 7-10 days Alternatives ★Cotrimoxazole(Trimethoprim- sulphamethoxazole), 160/800mg P.O, BID for 14 days By: Belete N 21
  • 22. Pyelonephritis… Severe acute uncomplicated pyelonephritis (high fever, high white blood cell count, vomiting, dehydration, or evidence of sepsis) or fails to improve during an initial outpatient treatment period Intravenous therapy should be started and continued until the patient improves (usually at 48–72 hours) On discharge oral therapy is continued to complete 10-14 days course Antibiotics should be started after urine culture sample is collected By: Belete N 22
  • 23. Pyelonephritis… First line Ciprofloxacin, 400mg, I.V, BID till patient improves and continue oral ciprofloxacin 500mg, PO, BID to complete 10-14 days course Alternatives Ceftriaxone, 2gm, I.V, daily or 1gm, I.V, BID till patient improves and continue oral ciprofloxacin 500mg, PO, BID to complete 10- 14 days course If no response in 48-72 hrs. ultrasound is warranted therapy to evaluate for obstruction, abscess, or other complications of pyelonephritis By: Belete N 23
  • 24. Pyelonephritis… Complicated UTIs and UTI in men-similar to uncomplicated UTIs but needs prolonged duration Recurrent UTI in women First line: Cotrimoxazole, 240mg, P.O., daily or 3x per week or postcoital Alternatives: ★Cephalexin, 125–250mg, P.O., once daily or postcoital or ★Norfloxacin, 200mg, P.O., once daily or postcoital or ★Ciprofloxacin, 125mg, P.O., once daily or postcoital Duration of antibiotics-for six months followed by observation If recurrent UTI comes again the prophylaxis can be prolonged for 1-2years By: Belete N 24
  • 25. Pyelonephritis… Nursing interventions Administer antipyretic & Antibiotics Fluids (2-3 L/d) to empty the bladder of contaminated urine & prevent calculus formation Catheterize with strict sterile technique Instruct the patient to perform appropriate perineal care Teach proper technique for collecting a clean catch urine specimen Emotional support Personal hygiene Advice routine checkups for patient with history of UTIs By: Belete N 25
  • 26. Pyelonephritis… Chronic pyelonephritis It is a persistent inflammation of kidneys Repeated infections that cause progressive inflammation & scarring Etiology: Bacteria Urinary obstruction Vesicourethral reflux By: Belete N 26
  • 27. Pyelonephritis… Clinical manifestations Usually have no symptoms of infection Noticeable signs ★Fatigue ★Headache ★Poor appetite Polyuria /Low specific gravity of urine/ Excessive thirst Weight loss Flank pain By: Belete N 27
  • 28. Pyelonephritis… Diagnosis History taking & physical examination Laboratory investigations Urinalysis Proteinuria (Albuminuria) Intermittent bacteriuria Leukocytes in urine Low specific gravity of urine Urine culture to identify the pathogen Blood  Decreased Hgb  Measuring BUN & creatinine/may increase  Decrease HCI Radiologic IV Urogram By: Belete N 28
  • 29. Pyelonephritis… Complications End-stage renal disease (from progressive loss of nephrons secondary to chronic inflammation and scarring) Hypertension Formation of kidney stones (from chronic infection with urea-splitting organisms) Management The same as acute pyelonephritis (Long-term use) Monitor HTN Monitor intake and out put By: Belete N 29

Editor's Notes

  1. The vaginal flora is the bacteria that live inside the vagina. The normal vaginal flora is dominated by various lactobacillus species. Lactobacilli help to keep the vagina healthy by producing lactic acid, hydrogen peroxide, and other substances that inhibit the growth of yeast and other unwanted organisms
  2. The five primary classes of immunoglobulins are IgG, IgM, IgA, IgD and IgE. These are distinguished by the type of heavy chain found in the molecule. IgG molecules have heavy chains known as gamma-chains; IgMs have mu-chains; IgAs have alpha-chains; IgEs have epsilon-chains; and IgDs have delta-chains.
  3. Human urine is composed primarily of water (95%). The rest is urea (2%), creatinine (0.1%), uric acid (0.03%), chloride, sodium, potassium, sulphate, ammonium, phosphate and other ions and molecules in lesser amounts
  4. Congenital malformations One kidney may be missing (renal agenesis). One or both kidneys may be abnormally small (renal hypoplasia). One or both kidneys may have formed abnormally (renal dysplasia). The kidneys may be joined to form a single arched or horseshoe kidney. The kidneys may be in the wrong position. One or both kidneys may have fluid-filled cysts (polycystic kidney disease or multicystic kidney disease