Chronic Kidney Disease Flashcards

1
Q

What is it?

A

impaired renal function for >3m based on abnormal structure or function
OR
GFR <60 for >3m w or w/o evidence of renal damage

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2
Q

What stage to sx usually start to appear?

A

4

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3
Q

What signifies ESRF

A

GFR <15 or need for RRT

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4
Q

What are the causes of CKD?

A
  1. DM T1>T2
  2. GN - commonly IgA
  3. Unknown - many present w small shrunken kidneys
  4. HTN or renovascular disease
  5. Pyelonephritis + reflux nephropathy
    Others - obstructive (AKIs), chronic interstitial nephritis, prev AKI, ADPKD
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5
Q

Who should automatically be screened for CKD?

A
  • DM, HTN, CHD
  • Structural renal disease, stones BPH
  • Recurrent UTIs, childhood hx of vesicoureteric reflux
  • Multisystem disorders which may include the kidney e.g. SLE
  • FHx of ESRF or known hereditary disease
  • Opportunistic detection of haematuria or proteinuria
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6
Q

What may be found OE in a patients first presentation

A
  1. pallor
  2. uraemia skin (yellow tinge)
  3. Purpura, excoriations
  4. Raised BP
  5. Cardiomegaly
  6. Signs of fluid overload
  7. Poss cause e.g. ballotable kidneys in PKD
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7
Q

What may be seen in untreated CKD?

A

in extremis - severe uraemia, hyperkalaemia - arrhythmia, encephalopathy, seizures or coma

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8
Q

Give the classification of CKD including the diff stages and GFRs

A
Stage 1: >90
2: 60-89
3A: 45-59
3B: 30-44
4: 15-29
5: <15 - established RF
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9
Q

What signs would u look for in peripheries of a pt w known CKD/ESRF?

A

HTN
AV fistula (thrill, bruit, recently needled)
Signs of prev. transplant - bruising from steroids, skin malignancy

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10
Q

What signs would u look for in the face of a pt w known CKD/ESRF?

A

pallor (anaemia)
Yellow tinge (uraemia)
Gym hypertrophy (cyclosporin)
Cushingoid appearance from steroids

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11
Q

What signs would u look for in the neck of a pt w known CKD/ESRF?

A
  • Line insertion (removed = scar over internal jugular + larger scar in breast pocket area)
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12
Q

What abdominal signs would u look for in a pt w known CKD/ESRF?

A
  • PD catheter, scar = midline scar below umbilicus + small round scar to side of midline)
  • signs of prev transplant - hockey stick scar, palpable mass
  • PKD (ballotable kidneys)
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13
Q

What OTHER signs would u look for in a pt w known CKD/ESRF?

A

Signs of diabetic neuropathy, retinopathy, CVD or PVD

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14
Q

What investigations would u do for a pt w CKD

A
  1. BLOOD - Hb (normochromic, normocytic), ESR, U+E, glucose, reduced Ca, raised phosphate + alk phos (renal osteodystrophy), raised PTH if CKD 3 or more
  2. URINE - dipstick, MC+S, albumin:creatinine
  3. IMAGING - USS (usually small but big in infiltrative disorders (amyloid, myeloid), PKD + DM
  4. HISTOLOGY - do if rapidly progressive or unclear cause + normal sized kidney
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15
Q

What are reversible causes of CKD?

A
oBSTRUCTION
Nephrotoxic drugs 
High Ca2+
CV risk (smoking)
Uncontrolled DM
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16
Q

How do you limit progression/ complications of CKD

A
  1. Control BP w ACEi/ARBs
  2. Check for renal bone disease
  3. CV modification - statins and aspirin
  4. Diet - healthy mod protein, K+ restriction if raised, avoid high phosphate foods
17
Q

What foods are high in phosphate

A

milk cheese eggs

18
Q

How do you manage renal bone disease

A

Measure calcium, phosphate, ALP, PTH, and 25-OH vit D if eGFR <30.
Treat if phosphate >1.5mmol/L (>1.7mmol/L if RRT) with dietary restriction ± phosphate binders.
Give vitamin D supplements (colecalciferol, ergocalciferol) if deficient.

19
Q
SYMPTOM CONTROL:
How do you treat:
i. Anaemia
ii. Acidosis
iii. Oedema
iv. Restless legs/cramps
A

i. Replace iron/B12/folate if needed. EPO if still anaemic. Keep Hb 100-120g/L
ii. Sodium bicarbonate supplements if low
iii. Furosemide, restrict fluid and Na intake
iv. Check ferritin, clonazepam or gabapentin may help and quinine sulphate for cramps

20
Q

What is the target BP in CKD What if they have DM or ACR >70

A

<130/80

<125/75

21
Q

How long before anticipated RRT should a patient be listed for renal transplantation?

A

at least 6m

22
Q

how is CKD classified using albumin conc and albumin creatinine ratio?

A

A1 - <30 mg/24h conc - <3 ratio
A2 - 30-300 - 3-30
A3 - >300 - >30

23
Q

What ACR indicates microalbuminuria?

A

> 2.5 (men)

>3.5 (women)

24
Q

What ACR indicates proteinuria

A

> 30

25
Q

What ACR indicates nephrotic syndrome

A

> 220