Renal OH NO Flashcards
Significant feature of nephrotic syndrome
Protein loss
prOtein= nephrOtic
Significant feature of nephritic syndrome
Haematuria
blood loss due to Inflammation= nephrItic
Gold standard investigation to confirm nephrotic syndrome
24hr urine collection
>3g/day diagnoses
Level of protein in 24hr urine collection diagnostic of nephrotic syndrome
> 3g/day
Most common nephrotic picture in children?
Minimal Change Disease
What is the change in Minimal Change Disease?
Podocytes fuse
Treatment for Minimal Change disease
Steroids
Cyclophosphamide if steroid resistant
Test for amyloidosis in kidney
Congo red staining (apple green birefringence)
What nephrotic picture is Anti-PLA2r antibodies associated with?
Membranous Glomerulopathy
Complications of nephrotic syndrome (4)
Thromboembolism
Infection risk
Renal impairment
Atherosclerosis (high lipids)
Back pain and renal failure
Diagnosis?
Myeloma
Tests for myeloma? (3)
Urine Bence Jones protein
Serum Electrophoresis
Serum Free Light Chains (Kappa & Lambda)
What happens in myeloma
Abnormal plasma cells overproduce immunoglobulin
Who gets Granulomatosis with Polyangiitis?
Old people
Difference between microscopic polyangiitis and granulomatous polyangiitis?
GPA has upper resp tract involvement (sinuses + nasal cavity)
GPA antibodies
cANCA
Anti -PR3
MPA Antibodies
pANCA
Anti-MPO
Why is complement low in lupus?
Used up in complexes
Cannon balls on CXR
Renal mets
Loin to Groin pain. What is it?
Renal Colic
UTI & travel to India. Likely organism?
Carbapenemase producing klebsiella/ enterobacteriae
dem shits resistant
What does Proteus sp. UTI cause?
Foul urine
Renal Calculi
Beading of the renal artery suggests
Fibromuscular Dysplasia
UTI with foul smelling urine and renal calculi causative organism?
Proteus Sp.
What is proven by RBC casts in urine
Haematuria is due to glomerular cause
Muddy brown casts of epithelial cells
Acute Tubular Necrosis
pathognomic
Saddle nose
GPA (due to URT granuloma/involvement)
Cut surface like a potato
Testicular seminoma
Blue dot sign suggests
Testicular torsion
agghhhhh
Who gets Goodpasture’s Syndrome
Young people
presence of anti-GBM antibodies
Painless Haematuria is probably
Malignancy
Renal failure, eye problems and bilateral sensorineural deafness. Diagnosis?
Alport syndrome
disorder in type IV collagen found at all of these sites
Patient with renal failure and family history of stroke and renal failure. Diagnosis?
Polycystic Kidney Disease
Why is PKD associated with stroke?
Causes berry aneurysms
String bead renal artery. Diagnosis?
Fibromuscular dysplasia
Muddy brown casts in urine
Acute Tubular Necrosis (ATN)
What is an AKI, define it
Sudden decrease in kidney function
Main side effect of AKI?
Hyperkalaemia
AKI = a K high!
Treat AKI Hyperkalaemia? (2)
- Calcium gluconate (cardioprotective)
- Insulin IV (forces K into cells)
- +/- nebulised salbutamol
What is the assumed pathology in kids with a nephrotic picture?
Minimal Change Disease
Treatment of minimal change disease
Oral steroids (94% remission)
What happens in Focal Segmental Glomerulosclerosis? (FSGS)
Ig/ complement deposition causes scarring/sclerosis
Treatment of FSGS?
Corticosteroids
What is Membranous Nephropathy?
Autoimmune inflammation of glomeruli
Antibody found in >75% Membranous Nephropathy
Anti-PLA2r
PLAYErrrrrrr
What is seen on silver stain of Membranous Nephropathy? (2)
Thickened basement membrane
Spike and Dome on Electron Microscopy
Best treatment for Membranous Nephropathy?
Immunosuppressants
eg Rituximab knocks out B cells
What does Rituximab do?
Knocks out B cells
What disease is IgA nephropathy associated with?
Henoch Schonlein Purpura
Describe Hencoh Schonlein purpura? (3)
Non-blanching rash of lower limbs
Vasculitis
Abdominal Pain
Classical description of IgA nephropathy?
finding and trigger
Micro-haematuria following strep throat or tonsilitis
What is seen on renal biopsy in IgA Nephropathy? (2)
IgA deposits
Mesangial Cell Proliferation
What is Rapidly Progressive Glomerulonephritis? (RPGN)
Rapid decline of kidney function leading to requiring dialysis in days/weeks
What is classically seen on renal biopsy in RPGN?
Glomerular crescents
Thickened Basement Membrane with Spiked Dome appearance. Diagnosis?
Membranous GN
Heroin user presents with oedema & proteinuria. Likely diagnosis?
FSGS
Tram track immune deposits on renal biopsy. Diagnosis?
Membranoproliferative GN
What is SNHL in Alport Syndrome due to?
Disordered type IV collagen
Most common nephrotic picture in adults?
Membranous Nephropathy
Facial feature in membranoproliferative glomerulonephritis?
Partial lipodystrophy (precedes renal disease by years)
For how long must investigations be abnormal to diagnose CKD?
3 months
What is the most common kidney malignancy in adults?
Renal Cell Carcinoma
What is the most common kidney malignancy in children?
Nephroblastoma
What renal pathology is associated with sickle cell anaemia?
Renal Papillary Necrosis
due to infarcted sickle cells
Which drugs can cause Acute Interstitial Nephritis? (3)
NSAIDs
Antibiotics (Beta Lactams and sulphonamides)
Loop/ Thiazide diuretics
Urine finding seen in Acute Interstitial Nephritis?
Eosinophils
At what measurement of creatinine is dialysis indicated?
Creatinine never indicates dialysis
What percentage of cardiac output goes to the kidneys?
About 20%
Does Angiotensin ii have greater effect on afferent or efferent glomerular arterioles?
Efferent
Kimmelstiel-Wilson nodules are highly suggestive of?
Diabetic Nephropathy
Thickened GBM with IgG under podocytes. Diagnosis?
Membranous Nephropathy
Spike and Dome appearance. Diagnosis?
Membranous Nephropathy
Heroin user presents with Nephrotic Syndrome. Likely diagnosis?
FSGS
Basket Weave appearance of GBM suggests what?
Alport’s Syndrome
thinning and spitting of GBM due to disordered type IV collagen
Tram-track renal biopsy. Diagnosis?
Membranoproliferative Glomerulonephritis (MPGN)
Major viral cause of Membranoproliferative Glomerulonephritis (MPGN)?
Hepatitis C
Haematological malignancy associated with Minimal Change Disease?
Hodgkin’s Lymphoma
How long after URTI symptoms does IgA Nephropathy present?
1-2 days
A first letter of alphabet, days much shorter than weeks as seen in Post-Strep GN
How long after URTI symptoms does Post-Strep Glomerulonephritis present?
1-3 weeks
Nitrites in urine indicate what?
UTI
Treat a 3mm ureteric stone?
Watchful waiting up to 5mm
Treat a 7mm ureteric stone? (2)
Shockwave Lithotripsy
or if discussed
Medical treatment 5-10mm (eg alpha blocker to expulse stone)
When is surgery indicated for a ureteric stone? (2)
Pain not tolerated
Stone unlikely to pass
When is Percutaneous Nephrolithotomy indicated?
Stone is bigger than 2cm
What is the most invasive surgery for ureteric/renal stones?
Percutaneous Nephrolithotomy
First line treatment for the majority of renal/ureteric stones?
Shockwave Lithotripsy
Main causes of Renal Artery Stenosis? (2)
Atherosclerosis
Fibromuscular Dysplasia