Conditions Flashcards
(116 cards)
UTI presentation
Dysuria, frequency, smelly urine
Very young; unwell, fail to thrive
Very old; incontinence, off their feet
Renal inflammation terms
Urethra; urethritis
Bladder; cystitis
Ureter; ureteritis
Kidney; acute pylonephritis
Recurrent or prolonged kidney infection; chronic pyelonephritis
Predisposing factors in UTI
Stasis of urine
- obstruction; congenital or acquired
- loss of ‘feeling’ of full bladder; spinal cord/brain injury
Pushing bacteria up urethra from below
- sexual activity in females
- catheterisation
Generalised predisposition to infection
- chemo, diabetes, immune system problems
Describe obstruction in stasis of urine
Obstruction at level of urethra
- upper urethral and bladder dilatation
- bilateral hydroureter
- bilateral hydronephrosis*
- chronic renal failure
*hydronephrosis = water in kidney
Obstruction at level of renal pelvis; one side only
- unilateral hydroureter
- unilateral hydronephrosis
(so still have one functioning kidney)
Consequences of obstruction
Proximal dilatation
Slowed urine flow; cannot flush out bacteria; infection
Slowed urine flow; sediments form; calculous formation; more obstruction
Cyclic TRIAD
Obstruction in children
Numerous renal tract abnormalities
Always investigate at 1st presentation and send to paediatric surgeons
Vesicoureteric Reflux
Decreased angulation of ureter at bladder
Opening at bladder is straight
inc pressure of urine in bladder causes reflux and leads to hydroureter
Common cause UTI in children
Common causes obstruction in adults
Men;
- benign prostatic hyperplasia
Women;
- uterine prolapse
Both sexes;
- tumours and calculi
Describe loss of “feeling” of full bladder (as a cause or urinary stasis)
Normally go to toilet and pass all urine
Decreased sensation; no sense when to micturate and do not know to empty it completely
Leave urine in bladder = high residual volume
Leads to stasis of urine and commonly UTIs
Describe pushing bacteria up urethra from below
Sexual activity tends to move lower urethral flora up tract (in women back wall urethra just in front of vagina)
Catheterisation
- any instrumentation urinary tract tends to move lower urethral flora up tract
UTI predisposition in females
- Short urethra
- Lack of prostatic bacteriostatic secretion
- closeness urethral orifice to rectum
- sexual activity
- pregnancy (pressure on ureters and bladder)
Complications UTI
Acute
- Severe sepsis and septic shock
Chronic
- kidney damage; hypertension, chronic renal failure
- calculi - obstruction - hydronephrosis; hypertension and renal failure
Normal Glomerulus
Afferent arteriole going in, efferent arteriole going out
“bag of capillaries”
Glomerulonephritis (general)
Disease of glomerulus, large range of conditions
Can be inflammatory or non-inflammatory
Primary only affects glomerulus, secondary affects other parts of body i.e. SLE
Two types; proliferative and non-proliferative
Can cause nephritic syndrome and nephrotic syndrome
Usually non-proliferative causes nephrotic syndrome and proliferative causes nephritic syndrome
4 common presentations of glomerulonephritis
- Haematuria
- Heavy proteinuria (nephrotic syndrome)
- Slowly increasing proteinuria
- Acute renal failure
Main causes of haematuria
UTI
Urinary tract stone
Urinary tract tumour
*Glomerulonephritis less common but can cause haematuria
US of kidneys
Urinary tract tone and tumour will show up so use as first investigation
Immunoflourescence
Check for Ig deposition in mesangial area of glomeruli
Complement system
System for punching holes in bacterial cell walls
Describe membranous glomerulonephritis
Nephrotic syndrome, slowly progressive, mainly ages 30-50
Immune complex deposition activates complement (c3) which punches holes in BM
Leaky filter allows albumin into urine
Microscopic analysis = thickened BM
Immunofluorescence = diffuse IgG uptake
Steroids if begins to progress
Diabetic nephropathy
- Glycated molecules
- matrix deposition in basal lamina underlying endothelium and mesangial matrix
- thickened but leaky BM and mesangial matrix compressed capillaries
Nodules of mesangial matrix = Kimmelsteil-Wilson lesions; gross excess mesagnial matrix forming nodules
Inevitable decline if
- Established diabetic neuropathy
- Continued poor diabetic control
Crescentic glomerulonephritis
Pattern down microscope; many diseases cause it
Granulomatosis with polyangitis
Form of vasculitis which affects vessels in kidneys, nose and lungs
Serum test shows presence anti-neutrophil cytoplasmic antibodies (ANCA)
*find this in serum but is not directed against glomerulus or deposited in kidney
fatal if left untreated; cyclophosphamide = 75% complete remission
Nephrotic syndrome
Characterised by high protein in urine and often frothy
Also hypoalbuminaemia, oedema, hyperlipidaemia