Renal and Urology Flashcards

1
Q

AKI

Criteria?

A

1) Rise in creatinine of > 25 umol/L in 48hrs
2) Rise in creatinine of >50% in 7 days
3) Urine output of <0.5ml/kg/hr for >6hrs

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2
Q

AKI

Stages?

A

STAGE 1
- >1.5-1.9x baseline OR <0.5ml/kg/hr for 6-12hrs

STAGE 2
- >2.0-2.9x baseline OR <05ml/kg/hr for 12+hrs

STAGE 3
- 3x baseline or >353umol/L OR <0.3ml/kg/hr for 24hrs OR anuria for >12hrs

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3
Q

AKI

Risk factors?

A

HANDS C

Heart failure / Hypovolaemia/ Hx of AKI
Age >65
Nephrotoxic drugs (NSAIDs/ ACEi) 
Diabetes 
Sepsis

CKD/ CLD / contrast agents

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4
Q

AKI

What is Acute Tubular Necrosis?

How does Necrosis occur?

A

damage and death (necrosis) of the epithelial cells of the renal tubules and most common cause of AKI

Necrosis occurs due to ischaemia or toxins (drugs)

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5
Q

AKI

Pathognomonic finding of ATN?

A

“Muddy brown casts” found on urinalysis

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6
Q

AKI

How does ATN cause a reduction in eGFR?

A

Reduced blood supply
AND
dead cells slough off into lumen causing further obstruction

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7
Q

AKI

Pre-renal causes?

A

Secondary to renal hypoperfusion

  • reduced circulating volume (e.g. hypovolaemia)
  • reduced cardiac output (e.g. cardiac failure),
  • systemic vasodilatation (e.g. sepsis)
  • arteriolar changes (e.g. secondary to ACE-inhibitor or NSAID use)
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8
Q

AKI

Intrinsic causes?

A

(structural damage)

Glomerulonephritis
ATN and Interstitial Nephritis
Rhabdomyolysis

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9
Q

AKI

Post-renal causes?

A

Obstructive causes (10%)

  • Renal stones
  • Prostatitis/ cancer / BPH
  • Urinary stones
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10
Q

AKI

Investigations?

A

Urinalysis - Infection (leucocytes), glucose, protein, blood

Ultrasound - if looking for obstruction

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11
Q

AKI

Clinical features?

A

Pre-renal - dehydration and hypovolaemia or hypervolaemia for cardiac failure (oedema etc)

Intrinsic - Nephrotic / nephritic syndromes

Post renal- loin to groin pain, haematuria, N+V, LUTS

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12
Q

AKI

Clinical features of Acute Interstitial Nephritis and most common cause?

A

drugs are the most common cause, particularly antibiotics - penicillin / rifampicin
NSAIDs
allopurinol
furosemide

Features - fever, rash, arthralgia
eosinophilia

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13
Q

AKI

Management?

A

RENAL DRS 26

Record baseline creatinine
Exclude Obstruction (US) 
Nephrotoxic drugs stopped
Assess and correct fluids and electrolytes 
Losses recorded +/- cathether 

Dipstick (blood/protein/infection/glucose)
Review meds
Screen

26 creatinine rise for AKI diagnosis

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14
Q

HYPERKALAEMIA

Causes?

A

CKD
Rhabdomyolysis
AKI / Addison’s
Metabolic Acidosis

drugs*: potassium sparing diuretics, ACE inhibitors, angiotensin 2 receptor blockers, spironolactone, ciclosporin, heparin

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15
Q

HYPERKALAEMIA

Signs on ECG and cardiac complications?

A
  • Tall T
  • Absent P
  • Broad QRS
  • Sinusoidal wave pattern

COMPLICATIONS - VF / arrhythmias

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16
Q

HYPERKALAEMIA

Management?

A

Cardiac protection = IV calcium gluconate

Shift extracellular K+ intracellular =
• Combined insulin/dextrose infusion
• Nebulised salbutamol

Removal of potassium from body =
• Calcium resonium (orally or enema)
• Loop diuretics
• Dialysis

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17
Q

Causes of Hydronephrosis?

A

Various obstructions e.g

Unilateral - calculi, ureteric obstruction and tumours

Bilateral - stenosis of urethra/ prostatic enlargement

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18
Q

RHABDOMYOLYSIS

Classic presentation?

A

Patient fell and prolonged seizure found to have AKI

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19
Q

RHABDOMYOLYSIS

What does muscle cell apoptosis release?

A

Myoglobin
Potassium
Phosphate
Creatine Kinase

ALL filtered by kidney and myoglobin TOXIC to kidney = AKI

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20
Q

RHABDOMYOLYSIS

Investigations?

A

Raised CK
Myoglobinuria (red-brown urine)
U+E (AKI and hyperkalaemia)
ECG (hyperkalaemia)

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21
Q

RHABDOMYOLYSIS

Causes?

A

CCSSEE

Crush injury
Collapse
Seizure
Statin + Clarithromycin 
Ecstasy 
excessive exercise
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22
Q

RHABDOMYOLYSIS

Management?

A

IV fluids
IV Sodium bicarbonate (make kidneys more alkaline)
IV Mannitol to increase GFR and reduce oedema

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23
Q

Triad of Haemolytic Uraemic Syndrome?

A

AKI
haemolytic Anaemia
thrombocytopenia

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24
Q

Common cause of HUS?

A

classically Shiga toxin-producing Escherichia coli (STEC) 0157:H7 (90%)

(secondary cause)

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25
Q

Classic presentation of HUS?

A

Bloody diarrhoea and then:

bruising (low platelets) 
abdo pain
Confusion (uraemia) 
pallor (anaemia) 
Hypertension (renal failure)
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26
Q

Tx of HUS?

A

Supportive + antihypertensives

No role for antibiotics despite preceding diarrhoea

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27
Q

Acute Urinary Retention

Presentation and Investigation?

A

Male 13:1

Acute confused and inability to pass urine / lower discomfort

Bladder US!

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28
Q

Causes of Acute Urinary Retention?

A

most commonly secondary to BPH

Others include strictures, calculi, masses +

DRUGS - benzos, Anticholinergics, Opioids

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29
Q

DIABETIC NEPHROPATHY

What is it?

A

high levels of glucose passing through glomerulus causing glomerulosclerosis

Most common cause of CKD and glomerular pathology in the UK

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30
Q

DIABETIC NEPHROPATHY

key feature?

A

Proteinuria - diabetics needed screening by ACR and U+E

Tx - ACE-i BP control

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31
Q

CKD Risk factors / causes?

A

Smoking
Hypertension
Old age
Polycystic kidney disease

Diabetes
Medications (lithium, PPI, NSAIDs)

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32
Q

Dx of CKD?

Significant proteinuria?

A

Two U+Es 3 months apart (eGFR)

ACR of >3mg/mol

For CKD eGFR <60 or proteinuria needed for dx

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33
Q

Staging of CKD?

A

G score and A score

G score is based on eGFR - 
G1 - >90
G2 - 60-89
G3a 45-59
G3b 30-44
G4 - 15-29
G5 - <15 end stage RF

A score is based on ACR

A1 - <3mg/mmol
A2 - 3-30mg/mmol
A3 - >30mg/mmol

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34
Q

Complications of CKD?

A
Secondary hyperparathyroidism + high 
phosphate 
CVD
Renal Bone disease (low Vit D and treat with Vit D)
Anaemia (treat with iron)
Peripheral Neuropathy

SCRAP

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35
Q

Presentation of Nephrotic Syndrome?

A
  • Proteinuria (>3.5g day)
  • Hypoalbuminaemia (<25g/L)
  • Oedema

+ hyperlipidaemia
+ hypercoagulable state

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36
Q

Presentation of Nephritic Syndrome?

A
  • haematuria
  • Proteinuria
  • Oliguria
  • Hypertension
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37
Q

Causes of Nephrotic?

A

Minimal change disease
focal segemental glomerulonephritis
membranous GN

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38
Q

Causes of Nephritic?

A

Rapidly progressive GN (goodpastures / wegeners)
IgA nephropathy
Post strep GN
Alport syndrome

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39
Q

What is IgA nephropathy?

Classical presentation?

A

Most common glomerulonephritis worldwide

macroscopic haematuria in young people following an URTI.

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40
Q

Difference between post strep GN and IgA nephropathy presentation?

A

Post strep = 1-2 weeks after URTI + proteinuria

IgA nephropathy = 1-2 days after URTI

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41
Q

What conditions are we thinking if someone presents with Acute Renal Failure and Haemoptysis?

A

Either Anti GBM disease or Granulomatosis with Polyangiitis

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42
Q

Polycystic Kidney Disease

What is the Ultrasound diagnostic criteria?

A

<30 years - 2 cysts uni/bi

3-59 years - 2 cysts bilaterally

> 60 years - 4 cysts bilaterally

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43
Q

Features of PCKD?

Extra renal features?

A

Recurrent UTIs, stones, HTN, abdo pain, haematuria

EXTRA RENAL - liver cysts (70%)
berry aneurysms (8%) rupture - SAH
CV disease (mitral regurgitation)
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44
Q

Management of PCKD?

A

Tolvaptan

if end stage RF - dialysis and transplant

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45
Q

Types of PCKD?

A

Autosomal dominant 1 (85% - chromosome 16)
Autosomal dominant 2 (15% - chromosome 4)
Autosomal recessive - end stage RF before adulthood

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46
Q

Management and cause for Urge Incontinence?

A

Cause - Detrusor overactivity

1st - Bladder retraining (6 weeks)

2nd - oxybutynin/ tolterodine / darifenacin

3rd - Mirabegron if old and frail

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47
Q

Management and cause for Stress Incontinence?

A

Cause - leaking when cough/ laugh etc

1st - pelvic floor muscle training (8 - 3x day for 3 months)

2nd - Duloxetine

surgical procedures: e.g. retropubic mid-urethral tape procedures

48
Q

Signs of Varicocele?

A

bag of worms. On the left is concern for Renal cell carcinoma

49
Q

Signs of testicular torsion

A

Painful tender testes retracted upwards

Whirlpool sign on US

50
Q

signs of Hydrocele

A

Transilluminate clear fluid and painless

51
Q

Signs and cause of epididymo-orchitis

A

Local spreading of chlamydia / gonorrhoea

- dysuria and discharge

52
Q

Management of epididymo-orchitis

A

if the organism is unknown BASHH recommend: ceftriaxone 500mg intramuscularly single dose,

plus doxycycline 100mg by mouth twice daily for 10-14 days

53
Q

Lower urinary tract symptoms?

A

cant UNSHIFT the urine

Urgency
Nocturia
Straining
Hesitancy
Intermittent flow
Frequency
Terminal dribbling 

weak flow and incomplete emptying

54
Q

BPH / LUTS initial assessment?

A
DRE
Abdo exam
Dipstick
Urinary frequency chart
PSA
55
Q

How does a cancerous prostate feel?

A

Hard, assymetrical craggy/ irregular and loss of central sulcus

56
Q

Causes of increased PSA?

A

1) Prostate cancer
2) BPH
3) Prostatitis
4) UTIs
5) Vigorous exercise (cycling)
6) Recent stimulation e.g. ejaculation

57
Q

Management of BPH and what the medication does?

A

Alpha blockers - Tamsulosin (relax smooth muscle)

5 - alpha reductase inhibitors - Finasteride (reduce size by blocking conversion of testosterone to DHT)

58
Q

Acute Bacterial Prostatitis cause and treatment?

A

E.coli

Tx - Quinolones for 14 days

59
Q

Surgical treatment of BPH?

A

Transurethral resection of the prostate (TURP)

removed by diathermy loop through resectoscope in urethra

60
Q

Alport Syndrome signs?

A

Can’t see - Lenticonus
Can’t pee - CKD, hematuria
Can’t hear a high C - sensorineural deafness

61
Q

An important marker to distinguish between pre-renal and renal causes of an acute kidney injury?

A

Assess urinary sodium

pre-renal (hypovolaemia) = kidney tries to preserve sodium to encourage water retention

renal = elevated levels of urinary sodium due to inability to preserve sodium levels through renal damage

62
Q

PROSTATE CANCER

Likely tumour type?

A

Androgen dependant adenocarcinoma

(95%) - peripheral zone

63
Q

PROSTATE CANCER

Most likely spread?

A

Bones and lymph nodes

64
Q

PROSTATE CANCER

Risk factors?

A

Afro caribbean
Increasing age
Obesity
Family history

65
Q

PROSTATE CANCER

What PSA result guides referral?

A

men aged 50-69 years should be referred if the PSA is >= 3.0 ng/ml

OR there is an abnormal DRE

66
Q

PROSTATE CANCER

First line investigation?

A

Multiparametric MRI

2nd- prostate biopsy

67
Q

PROSTATE CANCER

Features?

A
LUTS
Haematuria 
ED
Bone pain (bone mets) 
weight loss
Abnormal DRE
68
Q

PROSTATE CANCER

Medical management?

A

Reduce androgen levels

Goserelin

Bicalutamide

69
Q

PROSTATE CANCER

Complication of of radical prostatectomy

A

Erectile dysfunction

70
Q

PROSTATE CANCER

Risks with radiotherapy? (tx for types T3/4)

A

increased risk of bladder, colon, and rectal cancer following radiotherapy for prostate cancer

71
Q

How is Prostate cancer graded?

A

Gleason Grading Score

72
Q

Typical cause of Pyelonephritis?

A

E.coli

73
Q

Features of Pyelonephritis?

A
LUTS
Fever
Loin pain
vomiting
white cell casts in urine
74
Q

Treatment for Pyelonephritis?

A

broad-spectrum cephalosporin or a quinolone for 10 - 14 days

(cefalexin)

75
Q

What type of tumour are 95% of testicular cancers

A

Germ cell tumours - seminomas and non seminomas

76
Q

Tumour markers of testicular cancer?

A

seminomas: hCG may be elevated in around 20%
non-seminomas: AFP and/or beta-hCG are elevated in 80-85%
LDH is elevated in around 40% of germ cell tumours

77
Q

Risk factors of testicular cancer?

Common age of incidence?

A

Infertlity
Klinefelters

20-30 years

78
Q

Diagnosis and treatment of testicular cancer?

A

Ultrasound and Orchidectomy

79
Q

features of testicular cancer?

A

Painless lump

Gynaecomastia due to an increased oestrogen:androgen ratio

80
Q

Most likely mets from testicular cancer?

A

Brain, lung, lymph, liver

81
Q

When should trimethoprim be avoided in pregnancy and why?

A

Avoid in first trimester due to folate antagonist properties which cause neural tube defects such as spina bifida

82
Q

When should Nitrofurantoin be avoided in pregnancy and why?

A

Avoid close to term (3rd trimester) due to `neonatal haemolysis’

83
Q

Risk factors for transitional cell carcinoma of the bladder include:

A

Smoking

Aromatic Amines
Exposure to aniline dyes in the printing and textile industry: examples are 2-naphthylamine and benzidine

Rubber manufacture

Cyclophosphamide

84
Q

Risk factors for squamous cell carcinoma of the bladder include:

A

Schistosomiasis

Smoking

85
Q

Most common type of bladder cancer?

A

Urothelium - transitional cell carcinoma (95%)

86
Q

Presentation of bladder cancer?

A

painless, macroscopic haematuria

87
Q

How is bladder cancer diagnosed and staged?

A

Cystoscopy and Biopsies and staged by TNM

88
Q

Treatment of bladder cancer?

A

TURBT if superficial (not invading muscle)

T2 disease = surgery (cystectomy + urostomy)

89
Q

Referral guidance for bladder cancer?

A

Over 45 with unexplained visible haematuria, persisting after UTI treatment

Over 60 with microscopic haematuria plus dysuria or Raised WCC

90
Q

RENAL STONES

symptoms?

A

Unilateral loin to groin pain
Colicky
Haematuria
N+V

91
Q

RENAL STONES

Types of stones?

Drugs that can cause stones?

A
Calcium oxalate (oaque on radiograph) 
Urate (Radio-lucent)

Loop diuretics
steroids
acetazolamide
theophylline

92
Q

RENAL STONES

How to prevent renal stones?

A
High fluid intake
Avoid carbonated drinks
citric acid 
reduce salt
thiazide diuretics
93
Q

RENAL STONES

Risk factors?

A
Hypercalcaemia
Hyperparathyroid
Dehydration 
High dietary oxalate 
PCKD
Renal tubular acidosis

urate stones : GOUT

94
Q

RENAL STONES

Medical treatment?

Best imaging?

A

Pain - Diclofenac (NSAID)

Tamsulosin (Alpha blocker)

Non contrast CT-KUB

95
Q

RENAL STONES

Surgical treatment?

A

Extracorpeal shock wave lithotripsy (ESWL)

Ureteroscopy

96
Q

RENAL CELL CARCINOMA

Common type?

A

Adenocarcinoma

  • Clear cell (80%)
  • Papillary
  • chromophobe
97
Q

RENAL CELL CARCINOMA

Risks?

A
Smoking
obesity
hypertension
end stage renal failure 
von hippel-lindau
tuberous sclerosis
98
Q

RENAL CELL CARCINOMA

Features?

A

classical triad: haematuria, loin pain, abdominal mass

99
Q

RENAL CELL CARCINOMA

Associations with other organs?

A

Left varicocele (due to occlusion of left testicular vein)

cannonball mets (mets to liver due to RCC)

100
Q

RENAL CELL CARCINOMA

Paraneoplastic features?

A

EPO - Polycythaemia

mimic PTH - hypercalcaemia

HTN - renin

Abnormal LFTs - Stauffer syndrome

101
Q

RENAL CELL CARCINOMA

Stages?

A

1 - <7cm confined to kidney
2 - >7cm confined to kidney
3 - local spread (within gerotas fascia)
4 - spread beyond (lung, bone, brain)

102
Q

RENAL CELL CARCINOMA

Management?

A

Total nephrectomy unless T1 could be partial

103
Q

examples of quinolones?

A

Ciprofloxacin
Ofloxacin
Levofloxacin

104
Q

what are quinolones mainly used for

A

UTIs
Prostatitis
Epididymo orchitis
Pyelonephritis

105
Q

Key side effects of Quinolones?

A

1) Tendon damage/ rupture (Achilles)
2) Lower seizure threshold (in epilepsy)
3) lengthens QT interval

Avoid in breastfeeding and pregnant

106
Q

Causes of NAGMA?

A

HARDUPS

Hyperalimentation (XS saline) 
Acetazolamide
Renal tubular acidosis
Diarrhoea
Ureterostomy (new outlet)
Post hypocapnic state
Spironolactone (hypoadrenalism)
107
Q

Causes of HAGMA?

A

MUDPILES

Methanol
Uraemia (AKI/CKD) 
DKA
Propylene glycol
Isoniazid / Iron
Lactic Acidosis
Ethanol / Ethylene Glycol 
Salicylates (aspirin)
108
Q

Why does raised anion gap acidosis occur?

A

Accumulation of an unmeasured anion that consumes bicarbonate with no reciprocal increase in Cl-

109
Q

how to calculate anion gap?

What is a normal anion gap

A

(sodium + potassium) - (bicarbonate + chloride)

A normal anion gap is 8-14 mmol/L

110
Q

Complications of Peritoneal Dialysis and likely cause?

A

peritonitis:

coagulase-negative staphylococci such as Staphylococcus epidermidis is the most common cause

111
Q

RENAL TUBULAR ACIDOSIS

Where the different types found on the glomerulus

A

2 - proximal CT
1 - distal CT
4 - Collecting duct

112
Q

RENAL TUBULAR ACIDOSIS

Potassium changes?

A

2 LOW - hypokal
1 LOW - hypokal
4 MORE - hyperkal

113
Q

RENAL TUBULAR ACIDOSIS

Calcium changes?

A

2 - normal
1 - high
4 - normal

1 is odd therefore odd one out

114
Q

RENAL TUBULAR ACIDOSIS

pH changes?

A

2 - <5.5
1 - OVER 5.5
4 - <5.5

1 is odd therefore odd one out

115
Q

RENAL TUBULAR ACIDOSIS

kidney stones?

A

2 - No
1 - YES (high calcium)
4 - No

1 is odd therefore odd one out