Renal & Urology Flashcards
What is pre-renal, renal and post-renal AKI?
Pre-renal (40-70%)
• Inadequate perfusion e.g. hypotension (cirrhosis too)
Renal (10-15%)
• Cellular damage e.g. haemolytic uraemic syndrome
Post-renal (10-25%)
• Urinary tract obstruction e.g. prostatic hypertrophy
Symptoms and signs of AKI?
- Oliguria
- Dehydration
- Hypertension
- Palpable bladder or kidney
- Renal bruit
- Fluid overload (raised JVP, oedema)
Investigations for AKI? What would you see on CXR, ECG, immunology tests, and USS?
- Urinalysis - RBCs, WBCs, proteinuria, nitrites, leukocytes
- Bloods - creatinine >26 confirms diagnosis (also check hyperkalaemia, leukocytosis etc.)
- CXR - infection, pulmonary oedema
- ECG - hyperkalaemia
- Immunology - anti-dsDNA = SLE, anti-GBM = Goodpasture’s
- Renal USS - stones
Management of AKI?
ABCDE + treat hyperkalaemia (10% calcium gluconate)
- If hypovolaemia (most) - IV fluids
- If hypervoloaemia - IV furosemide
Treat cause • Stop nephrotoxic drugs • ABx • Catheterise • Dialysis
What is BPH?
Hyperplasia of periurethral (transitional) zone of prostate gland
(unlike peripheral layer in prostate carcinoma)
What are the acute and chronic retention symptoms of BPH?
Acute
• Sudden inability to pass urine
• Severe pain
Chronic
• Frequency - small volumes of urine
• Nocturia
• Painless
(signs: distended bladder)
Investigations for BPH?
- Urinalysis - pyruria
- PSA - elevated
- International prostate symptom score
• Transrectal Ultrasound Scan (TRUS)
Management of BPH?
Acute - urinary retention
• Catheterisation
Chronic
• Asymptomatic - conservative, monitor
• Symptomatic, medical:
1. Tamsulosin (alpha blocker)
2. + Finasteride (5a-reductase inhibitor)
• Symptomatic, surgical:
< 80mg = TURP or TUIP surgery. (transurethral resection/incision)
> 80mg = open prostectomy
Cell type of bladder cancer?
90% transitional cell carcinomas
80% confined to bladder mucosa, 20% penetrate muscle
Rarely squamous cell associated with chronic inflammation e.g. schistosomiasis
Grading of bladder cancer for prognosis?
Grade 1 - differentiated
Grade 2 - intermediate
Grade 3 - poorly differentiated
Symptoms of bladder cancer?
- Painless macroscopic haematuria
- Irritative/storage symptoms (frequency, urgency, nocturia, voiding irritability)
- Recurrent UTIs
(obstruction is rare, often no signs)
Investigations for bladder cancer?
- Urinalysis - haematuria, pyruria
- Urine cytology
- Cystoscopy (biopsy) - gold standard
- USS/CT
What defines chronic kidney disease?
- eGFR < 60
- eGFR > 60 with impaired renal function
> 3 MONTHS
Describe the stages of CKD
Stage 1: Normal
• eGFR > 90 with other evidence of CKD (proteinuria etc.)
Stage 2: Mild impairment
• eGFR 60-89 with other evidence of CKD
Stage 3a: Moderate impairment
• eGFR 45-59
Stage 3b: Moderate impairment
• eGFR 30-44
Stage 4: Severe impairment
• eGFR 15-29
Stage 5: Established renal failure
• eGFR < 15 or on dialysis
Signs of CKD?
- Skin pigmentation
- Uraemic tinge to skin - yellowish
- Excoriation marks
- Purpura
- Peripheral oedema
Investigations for CKD? Including diagnosis of CKD and cause.
- Isotopic GFR - gold standard
- Renal ultrasound
- Glucose - diabetes
- Serology - e.g. ANA for SLE
- Renal biopsy - pathology diagnosis
Relationship between epididymitis and orchitis?
Most cases of epididymitis associated with orchitis and vice versa
Most common causes of epididymo-orchitis?
Bacterial (overall coliforms)
Children: underlying congenital abnormality
< 35 years : chlamydia and gonococcus
> 35 years : coliforms (enterobacter, klebsiella, e. coli)
Symptoms and signs of epididymo-orchitis?
- Painful, swollen and tender epididymis/testis
- Penile discharge
- Dysuria
- Painful walking
- Pyrexia
- Painful cremasteric reflex
- Erythematous/oedematous
Investigations for epididymo-orchitis?
Exclude testicular torsion - emergency
- Urethral swab (G- diplococci)
• Urine dipstick
• Urine culture - Colour duplex USS - diagnostic, important if possibility of TT
Management for epididymo-orchitis?
2-4 weeks ABx
< 35 years - doxycycline for chlamydia, add ceftriaxone if gonorrhoea (treat partners)
> 35 years - ciprofloxacin
• analgesia + scrotal support
Surgical
• Exploration if TT can’t be excluded
• Abscess drainage
What 2 syndromes do glomerulonephritis patients present with?
Nephrotic - increase in permeability of glomerulus, loss of PROTEIN
Nephritic - thin glomerular BM with pores that allow protein and BLOOD through (haematuria, proteinuria, HTN)
Primary and secondary causes of nephrotic and nephritic syndrome?
Nephrotic
• Primary - minimal change disease
• Secondary - diabetes, hep B/C
Nephritic
• Primary - IgA nephropathy
• Secondary - SLE, vasculitis, anti-GBM, post-strep
Why may hyperlipidaemia be seen in nephrotic syndrome?
Hypoalbuminaemia cause liver to compensate and increase lipid production
Who usually presents with minimal change disease and give 2 causes
- Child with nephrotic syndrome
* Causes: Hodgkin’s, NSAIDs
Investigations for glomerulonephritis?
- Urinalysis
- Bloods - elevated creatinine, LFTs, GFR, hyperlipidaemia
- Renal USS - exclusion
- Renal biopsy - diagnostic
What is a hydrocoele?
Excessive collection of serous fluid within the TUNICA VAGINALIS