peds - GU Flashcards
Urinary Tract Infections due to
urinary stasis, vesicoureteral reflux, urethral exposure to organisms
Structural Defects are usually
hereditary
Insufficient Renal Function
Acute, chronic, structural causes
Genitourinary System
- Excretes Wastes
- Maintains acid-base, fluid, and electrolyte balance * Produce Renin –regulates blood pressure
GU - Pediatric Differences - nephrons?
- All nephrons present at birth
Expected urine output according to age -does it increase or decrease?
Urinary output per kilogram of body weight decreases as the child ages because the kidney becomes more efficient at concentrating urine.
Expected urine output according to age - numbers
(2 to 40)
Infants 2 ml/kg/hr Children 0.5 - 1 ml/kg/hr Adolescents 40-80 ml/hr
reproductive -
* Pediatric Differences- when is it functional?
Functionally immature until puberty
* Genitalia (except clitoris in girls) enlarge gradually through childhood
Diagnostic Procedures
- Computed tomography
- Cystoscopy
- Intravenous pyelogram
- Magnetic resonance
imaging (MRI) - Renal biopsy
- Renal or bladder
ultasound
Laboratory Tests
- Blood urea nitrogen
- Creatinine
- Creatinine clearance * Basic metabolic panel * Urinalysis
- Urine culture
- Urine protein to creatinine ratio
UTIs - more common in…
- More common in males 1st 6 months
- Uncircumcised – 10-12 times – to develop UTI
- After 6 months girls
- More common in girls
- Due to shorter urethra
- Urethra closer to anus & vagina * Increasing risk of contamination
UTI pathos - most common bacteria
Most common cause * Escherichia coli
* Urinary stasis
* Due to infrequent voiding
* Neurogenic bladder
* Interrupted nerve supply
* Poor hygiene
* Inadequate cleansing after BMs
* Irritated perineum
UTI - clinical manifestations - Infants - what about diaper?
vFever
vWeight loss/failure to gain weight vFailure to thrive
vPoor feeding
vIrritability
vVomiting & diarrhea
vFoul smelling urine
vPersistent diaper rash
UTI - clinical manifestations - Older children - same as adults
vUrinary frequency
vPain during micturition
vAbdominal pain
vHematuria
vFever chills
vEnuresis (incontinence)
vFlank pain
UTI - assessment - what type of catch?
- Urinalysis (UA)
- Urine culture
- Microscopic –large numbers of WBCs
- Large numbers of bacteria
1) Obtain catheter specimens in infants and young
children
2) Clean-catch specimen
Normal Urine pH
- pH 5 to 9
urine shouldn’t have
(no GHK in urine)
ØGlucose
ØKetones
ØHgb
Hypospadias - what about circumcision? and does it interfere with voiding?
- Does not interfere with voiding
- Could interfere with reproduction
- If not repaired by adulthood
- Routine circumcision may be avoided * As foreskin may be needed for the repair
Hypospadius - mild
- Congenital anomaly
- Involving abnormal location of the urethral meatus
- Incidence - 1 out of 300 male births
- Mild – slightly off center from tip of penis
Chordee
(cord down the middle)
- Most often accompanies hypospadias * Fibrous line of tissue
- Downward curvature of penis
hypospadias - Surgical Correction - what age?
- Mild cases not indicated
- Choice of surgical procedure-depends on defect * 6-12 months
- Silicone stent
hypospadias - Post-op care - restraints?
Sedation
* Arm & leg restraints
* Pain management
* Care of stint or indwelling catheter
* Irrigation if ordered
* I & O
Cryptorchidism - can impair what?
(no sperm in the crypt)
- Failure of one or both testes to descend from the inguinal canal into scrotum
- Can impair spermatogenesis (the creation of sperm).
Cryptorchidism - common in
- Occurs in 3% of term male infants
- Higher incidence in preterm infants
- Normal descent occurs in late gestation