Renal 1 Flashcards
Most important UA finding used to diagnosis nephritic syndrome?
RBC casts
Type of urine casts associated with nephrotic syndrome?
Fatty casts
3 lab findings associated with nephrotic syndrome?
Hypoalbuminemia, Hypogammaglobulinemia, Hyperlipidemia

What triggers hyperlipidemia in nephrotic syndrome?
Increased hepatic lipoprotein synthesis due to decreased oncotic pressure
2 endocrine changes associated with nephrotic syndrome?
Loss of thyroid globulin binding protein, Loss of iron binding globulin
Change to thyroid hormone nephrotic syndrome?
Decreased total thyroxine level
Change to serum iron level in nephrotic syndrome?
Decreased total serum iron level
Hematologic change associated with nephrotic syndrome?
Loss of antithrombin III, Protein C, Protein S … Hypercoagulable state
Patients with nephrotic syndrome are most likely to develop which complication of hypercoagulability?
Renal vein thrombosis
4 most common causes of nephritic syndrome?
Post-infectious glomerulonephritis, IgA nephropathy, Membranoproliferative glomerulonephropathy, Rapidly progressive acute glomerular nephropathy

Which type of infection can trigger Post-infectious glomerulonephritis?
Pharyngitis OR Skin infection

Change to complement levels in Post-infectious glomerulonephritis?
Low serum C3
Change to complement levels in IgA nephropathy?
Normal serum C3
2 types of IgA nephropathy?
Berger disease, Henoch-Schonlein Purpura
Description of Berger disease?
Hematuria that develops 1-2 days after URI
4 symptoms seen in Henoch-Schonlein Purpura?
Hematuria, Arthralgias, Abdominal pain, Purpura
Which condition is associated with BOTH nephrotic and nephritic symptoms?
Membranoproliferative GN
Etiology of Membranoproliferative GN?
Mixed essential cryoglobulinemia
2 conditions associated with Membranoproliferative GN?
Hepatitis C infection, SLE

Change to complement levels in Membranoproliferative GN?
Low serum C3

Best treatment for Membranoproliferative GN?
IFNa
Cause of Rapidly progressive acute glomerular nephropathy – Type 1?
Goodpasture Syndrome
Goodpasture Syndrome represents a Type ___ HSN reaction
2
Cause of Rapidly progressive acute glomerular nephropathy – Type 2?
SLE, Post-Streptococcal GN, Cryoglobulinemia GN
Cause of Rapidly progressive acute glomerular nephropathy – Type 3?
Vasculitis
6 types of nephrotic syndrome?
Membranous nephropathy, Minimal change disease, Focal segmental glomerulosclerosis, Diabetic nephropathy, Amyloidosis + Multiple Myeloma, HIV-associated nephropathy
3 infections associated with Membranous nephropathy?
Hepatitis B, Malaria, Syphilis
4 drugs associated with Membranous nephropathy?
Gold, Penicillamine, Captopril, NSAIDs
Patient presents with nephrotic syndrome; HX of solid tumors – what is most likely type of associated nephrotic syndrome?
Membranous nephropathy
1 exposure associated with Minimal Change Disease?
NSAIDs
1 condition associated with Minimal Change Disease?
Hodgkin Lymphoma
First step in workup for evaluation of possible secondary cause of minimal change disease?
CT scan of chest/abdomen
Appearance of light microscopy in Minimal Change Disease?
NML
Best treatment of Minimal Change Disease?
Oral prednisone 60mg daily for 4-6 weeks

3 epidemiology characteristics of Focal segmental glomerulosclerosis?
HIV, Heroin abuse, AA
Diabetic nephropathy is associated with RTA Type ___
4

Best treatment for Diabetic nephropathy?
ACEI, ARB
What are two conditions associated with light chain nephrotic syndrome?
Multiple myeloma, Amyloidosis
Best step of workup (before renal biopsy) for patient with suspected HIV nephropathy?
Renal US
Appearance of renal US in setting of HIV nephropathy?
Large echogenic kidneys

Diagnostic test for HIV nephropathy?
Renal biopsy
Appearance of renal biopsy for HIV nephropathy?
Collapsing focal glomerulosclerosis with tubular microcyst formation

In addition to HAART, which medication should be used to treat HIV nephropathy?
ACEIs
What type of metabolic acidosis is associated with RTA?
Normal anion gap
Change.to serum Cl- in all types of RTA?
High
2 conditions associated with RTA – Type 1?
SLE, Sjogren
2 medications associated with RTA – Type 1?
Amphotericin B, Lithium

Location of RTA – type 1?
Distal convoluted tubule

Change to urine pH in RTA – type 1?
High

Change to serum K+ in RTA – type 1?
Low
2 conditions associated with RTA – Type 2?
Fanconi Syndrome, Multiple Myeloma

Description of Fanconi Syndrome?
PCT disorder associated with decreased resorption of glucose, AA, urea, HCO3-
2 medications associated with Fanconi Syndrome?
Tetracycline, Tenofovir
1 condition associated with Fanconi Syndrome?
MGUS
Inheritance pattern of Fanconi Anemia?
AR
What is Fanconi Anemia?
Aplastic anemia
3 medications associated with RTA – Type 2?
Acetazolamide, 6-MP, Topiramate
Location of RTA – type 2?
Proximal convoluted tubule
Change to urine pH in RTA – type 2?
Low
Change to serum K+ in RTA – type 2?
Low
2 conditions associated with RTA – Type 4?
Aldosterone deficiency, DM
1 medication associated with RTA – Type 4?
Aldosterone antagonists
Location of RTA – type 4?
Distal convoluted tubule
Change to urine pH in RTA – type 4?
Low
Change to serum K+ in RTA – type 4?
High
Best treatment for RTA – Types 1 & 2?
HCO3-
Best treatment for RTA – Type 4?
K+ restriction
What is best treatment for acute hyperkalemia?
Calcium gluconate, Insulin, Dextrose
Role of calcium gluconate in setting of hyperkalemia?
Cardio-protection
Electrolyte change associated with cisplatin?
Hypomagnesemia
Why is hypomagnesemia commonly associated with hypocalcemia?
Mg2+ is required for NML function of PTH
What are the 3 medications that can cause hypo-Mg2+?
Gentamicin, Cisplatin, Amphotericin B
Most common type of kidney stone?
Calcium oxalate
3 lab values associated with increased risk of developing kidney stones?
Hyperoxaluria, Hypocitraturia, High protein
Treatment of choice for struvite stone?
Ceftriaxone OR Gentamicin + TMP-SMX for 14 days
HIV medication associated with increased kidney stones?
Indinivir
What is first imaging study to order for patient with suspected kidney stones?
XR
In pregnant patient, what is first imaging study to order for suspected kidney stones?
US
What is best imaging study to ID suspected uric acid kidney stones?
CT, IV pyelography
Which extremity condition are patients with CKD at greater risk for?
Carpal tunnel syndrome
What accounts for increased incidence of Carpal Tunnel in patients with CKD?
Deposition of b2 microglobin
What is optimal HGB level for patient with CKD on EPO?
11
Patient with CKD receives EPO; Labs show persistently-low HGB – etiology?
Iron deficiency anemia … due to EPO use
Etiology of Ostitis Fibrosa Cystica?
Secondary hyper-PTH
Best treatment for renal osteodystrophy?
Low PO3- diet; PO3- binders; Vitamin D supplementation
Definition of ESRD?
GFR < 15
What is most common cause of death in patients with ESRD?
CVD
AE of azathioprine?
Myelosuppression

Which medication is associated with increased myelosuppression in setting of azathioprine use?
Allopurinol
Which medication should be substituted for allopurinol in setting of azathioprine use?
Mycophenolate mofetil
2 examples of calcineurin inhibitors?
Cyclosporine, Tacrolimus
AE of Cyclosporine?
Nephrotoxicity, Hirsuitism, Gingival hyperplasia
AE of Tacrolimus?
DM
FENa in setting of prerenal disease?
<1%

Change to BUN/Cr ratio in prerenal disease?
High (>20:1)

Effect of prolonged episodes of prerenal azotemia on FENa?
FENa will start low, but may increase
Appearance of UA in prerenal azotemia?
Hyaline casts
Which test would help differentiate between prerenal azotemia hepatorenal syndrome vs. intravascular volume depletion as cause of acute renal failure?
Urine bolus in response to IV fluid bolus … Renal failure will improve if due to intravascular volume depletion … Will NOT improve if due to hepatorenal syndrome
Change to urine osmolarity in prerenal azotemia?
High

FENa in setting of intrarenal disease?
>2%

Change to BUN/Cr ratio in intrarenal disease?
Low (<15:1)
3 drugs that lead to drug-induced ATN?
Amphotericin B, Aminoglycosides, Cisplatin
Amphotericin B is associated with Renal Tubular Acidosis – Type ___
1
Which portion of nephron is damaged with aminoglycoside use?
Proximal tubule
Which portion of nephron is damaged with cisplatin use?
Distal convoluted tubule
Electrolyte abnormality associated with cisplatin?
Hypomagnesemia … (due to magnesuria)
Change to urine osmolarity in intrarenal azotemia?
Low

Change to renal vasculature in setting of rhabdomyolysis?
Vasoconstriction
Change to CPK level in statin-induced rhabdomyolysis?
CPK = High
Another electrolyte abnormality seen in setting of rhabdomyolysis?
Hyperkalemia
Change to CPK level in steroid-induced myositis?
CPK = NML
2 treatments for rhabdomyolysis?
IV hydration; Alkalinize urine (pH > 6.5)
45 yo male develops dark lesions on bottom of toes after percutaneous renal angioplasty; HX of HTN; CBC shows eosinophilia, Cr = 3.1 – diagnosis?
Cholesterol atheroembolic-induced renal failure
Event that always precedes development of cholesterol atheroembolic-induced renal failure?
Invasive procedure
Prognosis of Cholesterol atheroembolic-induced renal failure?
Irreversible
2 lab changes seen in Cholesterol atheroembolic-induced renal failure?
Eosinophilia, Hypocomplementemia
2 aspects of clinical presentation for Cholesterol atheroembolic-induced renal failure?
Emboli on fundoscopic exam, Microemboli of digits
6 drugs associated with Acute Interstitial Nephritis?
TMP-SMX, NSAIDs, Cimetidine, Thiazides, Phenytoin, Allopurinol
Triad of clinical symptoms seen in setting of Acute Interstitial Nephritis?
Fever, Rash, Eosinophilia
UA finding associated with Acute Interstitial Nephritis?
Eosinophils in urine
2 renal conditions associated with NSAID use?
Acute Interstitial Nephritis, Papilary necrosis
In addition to NSAIDs, what is another exposure that can lead to papillary necrosis?
Lead
FENa in setting of postrenal disease?
>2%

Change to BUN/Cr ratio in postrenal disease?
~ 15:1
UA shows muddy brown casts – diagnosis?
Acute tubular necrosis
UA shows RBC casts – diagnosis?
Acute glomerulonephritis
UA shows > 3+ proteinuria – diagnosis?
Nephrotic syndrome
UA shows waxy (hyaline) casts – diagnosis?
Prerenal azotemia
UA shows eosinophils + WBC casts – diagnosis?
Interstitial nephritis
UA shows WBC casts – diagnosis?
Pyelonephritis
2 additional PE findings seen in AD polycystic kidney disease?
Hepatic cysts + Cerebral aneurysm
Best management of simple renal cyst?
Reassurance