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Nephrology
Nephrology COMLEX 2
109
Medical
Graduate
05/02/2015

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Term
define proteinuria, nephrotic, trace, and 1-4+ protein
Definition
trace 50-150mg
>150 proteinuria
>3.5 nephrotic
1+ 150-500
2+ 0.5-1.5g
3+ 2-5g
4+ >5g
Term
define hematuria
Definition
>3 RBC / HPF on UA
Term
what is the best test for renal function
Definition
CR clearance
Term
best to test obstruction, masses, cysts
Definition
renal US
Term
best to detect pyelonephritis
Definition
IVP
Term
treatment of uncomplicated and complicated pyelonephritis
Definition
uncomplicated: TMP-SMX 10d, amoxicillin in GPC suspected

complicated: hospitalize, IV fluids, ampicillin with gentamycin or cpiro
Term
complications of pyelonrphritis
Definition
preterm labor
low birth weight
sepsis and shock
Term
treatment of uncomplicated, pregnancy, male, recurrent, and asymptomatic UTI
Definition
uncomplicated: TMP-SMX 3d
pregnancy: ampicillin, amoxicillin, or ceph 7-10d
male: treat as uncomplicated once, if recurs do full urological work up
recurrent: culture, if >2y, TMP-SMX before intercourse
asymptomatic: treat if pregnancy or undergoing urological procedure
Term
complications of UTI
Definition
pyelonephritis
seosis
prostatis
preterm labor
low birth weight
spontaneous second trimester abortion
preeclampsia
amnionitis
Term
signs of CaO, CaP, urate, struvite, and cystine stones
Definition
CaO/P: radiodense, bypyrmidal or biconcave
Urate: pH <5.5, flat squares, radiolucent
Struvite: staghorns, alkaline urine, coffin lid, radiodense, rectangle prism
Cystine: hexagon, staghorns
Term
most sensitive test for finding renal stones
Definition
CT without contrast
Term
when and how to pass renal stone
Definition
<9mm
strain urine
3L/d fluids during night too
tamsulosin to relax smooth muscle
nifedipine
repeat CT in 4wk
Term
what to do with large renal stones
Definition
5mm-2cm: extracorporeal shock wave lithotropsy
uteroscopy: larger
percutaneoous nephrostolithotomy: super large, stagnorn stones
Term
best way to diagnose urine obstruction
Definition
US shows dilation, sensitive and specific
IVP is gold standard but invasive
Term
signs adult polycystic kidney disease, treatment
Definition
AD, berry aneurysms, subarachnoid hemorrhage, flank pain, UTI, hematuria, large kidneys, HTN, kideny, stones, MVP, liver cysts, aortic dissection

tx: vasporessin antagonist and amiloride prevent fluid collection in cysts
Term
signs child polycystic kidney disease
Definition
AR, portal HTN, cholangitis, often biliary dysgenesis, hepatic fibrosis, large kidneys, abdominal distension, HTn, pulmonary insufficiency, potter syndrome (oligohydraminos, lung hypoplasia, club feet, abnormal facies)
Term
causes of increased EPO
Definition
renal cell carcinoma
hepatocellular carcinoma
pheochromocytoma
hemangioblastoma
high altutudes
lung disease / hypoxia
Term
renal cell carcinoma: risk factors, signs, diagnosis
Definition
smoking, cadmium, asbestos, polycystic kidney disease, von-hippel lindau

flank pain, weight loss, HTN, fever, hematuria, scrotal vericocele, polycythemia

biopsy can lead to peritoneal seeding, just CT/MRI
Term
staging and treatment of bladder cancer
Definition
0: superificial mucosa only, CIS: intravesical chemo
A: lamina propria, tends to recur: transurethral resection
B: muscle invasion: radical cystectomy, hysterectomy, vaginal removal, node dissection
C: perivascular fat: same
D: mets to nodes, organs, distand: cystectomy, chemo, radiation
Term
postinfectious glomerulonephritis
Definition
cant prevent with antibiotics
brown urine
anti-streptolysin O
bumpy IgG/C3 on BM subepithelial, hypercellular glomeruli, PMN
Term
IgA nephropathy
Definition
assoc with UTI, henoch-scholen purpura
gross hematuria
IgA/C3 in mesangeal cells, mesangeal proliferation
Term
crescentric proliferative glomerulonephritis
Definition
anti-glomerular GM
linear IgG/C3 on BM
lower respiratory disease and renal failure
needs plasmaphoresis
Term
hereditary nephritis
Definition
XR/AD collage IV BM defect
cataracts, hematuria, high frequency hearing loss
split BM
Term
rapidly progressive glomerulonephritis
Definition
1) anti-GM Ab (crescentric proliferative)
2) immune complexes (IgA nephropathy, post-infectious, lupus)
3) p-ANCA+

sudden renal failure, weakness, weight loss, fever, oliguria
inflammatory cells, fibrous deposition in bomans, crescent formation (BM wrinkeling)
Term
minimal change
Definition
kids
flat BM, fusion of foot processes
systemic T cell dysfunction
Term
granulomatosis and polyangiitis
Definition
c-ANCA
upper and lower respiratory disease
renal failure
immune complexes in renal vessels
Term
FSGN
Definition
adults, HIV, AA
sclerotic changes, segmental
Term
membranous glomerulonephritis
Definition
hepB, syphilis, malairia, gold, penicillamine, neoplasm, SLE

spike and dome BM thickening, subendothelial
Term
myeloproliferative glomerulonephritis
Definition
hepC, SLE, syphilis, bacterial endocarditis, cyroglobinemia

IgG on BM subendothelial humps, BM thickening, double layer tram track appearance
Term
diabetic nephropathy
Definition
BM and mesingeal thickening due to DM vascular changes
round kimmelsteil wilson nodules in glomeruli
Term
amolyoid nephropathy
Definition
expansion of mesangeal matrix, apple green bifringence using congo red stain under polarized light
Term
best way to diagnose renal artery stenosis
Definition
renal artery duplex: best initial
renal arteriogram: gold standard
Term
treatment of prostatitis
Definition
TMP-SMX 4-6wk, treat for STDs, if chronic add fluoroquinolone
Term
how is a vericocele diagnosed
Definition
US doppler
Term
treatment options for BPH
Definition
a1-blocker: doxazosin, terazosin
a1-selective blocker: tamsulosin (less SE)
5a-reductase inhibitor: finasteride
isoflavones
saw palmeto
TURP if refratory
Term
when do you do a transrectal US and biopsy with gleason stain
Definition
PSA >10
PSA increasing >0.75/y
DRE abnormal
Term
treatment of prostate cancer
Definition
found early, refuses prostatectomy: radiation bea or branchytherapy seeds

localized to prostate: radical prostatectomy, nothing if life expectancy <10y

locally invasive: radical prostatectomy, radiation, androgen deprivation

metastastic: radical prostatectomy, radiation, orchiectomy, antiandrogens, LH agonists (leuprolide), GnRH antagonists to suppress testosterone
Term
prostate cancer screening
Definition
DRE in all men annually >50yo (>40yo in AA or family hx)
Term
treatment of epididmyitis
Definition
<35 ceftriaxone and doxycycline x10d
>35 or anal intercourse fluoroquinolones 10d
Term
treatment of testicular tosrion
Definition
manual immediate detorsion, surgical detorsion, orchidoplexy BL
within 6h
Term
testicular seminoma
Definition
most common
slow growing, late invasion
clear cytoplasm, round nuclei, fried egg look
bhCG
hyperechoic on US
radiosensitive
Term
testicular embryona
Definition
malignant potential, hemorrhage, necrosis
mets to abdominal lymph and lungs
AFP, bhCG
Term
testicular choriocarcinoma
Definition
most agressive, hemorrhage, necrosis
mets by time of diagnosis
b-hCG
Term
testicular teratoma
Definition
rare mets in kids, common if adult
seen in infants
endo/ecto/mesoderm tissue
Term
testicular yolk sac tumor
Definition
endodermal sinus tumor
young boys
AFP
schiller duval bodies
Term
meds that cause impotence
Definition
SSRI
spironolactone
clonidine
methyldopa
guanethidine
thiazides
BB
ketoconazole
cimetidine
antipsychotics
Term
treatment of priapism
Definition
DOC is intracaernosal injection of phenylephrine (a-agonist)
if refractory: oral terbutaline or pseudophedride
still refractory: bupivacine penile nerve block and needle aspiration of cavernosum and saline irrigation
Term
signs of wilms tumor
Definition
WAGR (wilms, aniridia, GU abnormalities, MR)
neurofibromatosis
abdominal pain
hematuria
HTN, fever
weight loss, N/V, dysuria, polyuria
palpable flank mass
Term
what is epispadius associated with
Definition
extrophy of the bladder
Term
how is cryptoorchidism treated
Definition
bring into scrotum by 8-12mo for optimum function, can try hCG for descent before that
Term
how are posterior urethral valves diagnosed
Definition
voiding cystogram showing elongation and filation of posterior urethra
Term
signs of acidosis
Definition
decreased affinity of Hb for Od
CNS depression
decreased pulmonary flow
arrhythmia
impaired myocardial function
hyperkalemia
Term
signs of alkalosis
Definition
increased affinity of Hb for O2
decreased cerebral flow
arrhythmia
tetany
seizure
Term
delta gap
Definition
anion gap -12
indicates anion gap metabolic acidosis
Term
anion gap
Definition
Na = (Cl + HCO3)
high indicates metabolic acidosis
Term
how to determine acid base disorders
Definition
1) anion gap, if there is gap then it is metabolic acidosis
2) delta gap then add bicarb, if >26 then metabolic alkalosis, if <22 then metabolic acidosis
3) look at pH/CO2, if in same direction it is metabolic
4) apply winters formula
Term
causes and treatment of metabolic acidosis with anion gap
Definition
methanol, uremia, DKA/starvation, paraldehyde/propylene glycol, isoniazid/iron, lactic acid, ethanol/ethylene glycol, salicylates

tx: bicarb
Term
causes and treatment of metabolic acidosis without anion gap
Definition
hyperkalemia: addisons, RTA4, TPN
hypokalemia: RTA1/2, diarrhea, fanconi, acetazolamide

tx: bicarb
Term
cause and treatment of metabolic alkalosis
Definition
saline sensitive (Cl<10): vomiting, NG suction, diuretics, diarrhea
saline resistant (Cl>10): hyperALD, cushings, barters, diuretics, hypoK

tx: treat cause, NS/K if saline sensitive
Term
causes and treatment of acute respiratory acidosis
Definition
COPD exacerbation, narcotics, anesthetics, sedatives, respiratory muscle fatigue

verify airway, O2, naloxone, bronchodilators, ventilate, intubate
Term
causes of chronic respiratory acidosis
Definition
COPD, mysathenia gravis, brainstem injury
Term
causes and treatment of acute respiratory alkalosis
Definition
hyperventilation, anxiety, asthma exacerbation, aspirin toxicity, PE, altutude, sepsis, mechanical ventilation

tx: inhaled CO2, breathing into bag
Term
causes of chronic respiratory alkalosis
Definition
pregnancy, chronic asthma, living at high altutude, liver cirrhosis
Term
determining mixed acid base disorders
Definition
1) Determine anion gap, if you have anion gap you have metabolic acidosis
2) Determine delta gap, add delta gap to the bicarb, this is what the bicarb would be without the metabolic acidosis, if this level is high there is also metabolic alkalosis
3) Determine which is stronger, the metabolic acidosis or alkalosis, based on current pH
4) Apply winter’s formula to the stronger metabolic condition, if the rule is followed then there are no further conditions, if CO2 raises or drops more than expected there is an additional condition
Term
distribution of body water
Definition
60% total body weight in kg
40% ICF
20% ECF = 5% plasma + 15% interstitial
Term
normal urine output
Definition
>1mL/kg/h in infant
0.5-1 mL/kg/h in adult
Term
calculating maintenance fluids
Definition
4mL/kg for 1st 10kg
2mL/kg for 2nd 10kg
1mL/kg for every 1kg more
provides hourly rate
Term
calculating water deficit
Definition
(0.6xkg) x (Na/140-1)
Term
hypovolemic hypernatremia causes and treatment
Definition
renal loss: diuretics, glucosuria, renal railure
extra renal: diarrhea, diaphoresis, respiratory loss

isotonic NaCl until hemodynamically stable then replace free water deficit
Term
isovolemic hypernatremia causest
Definition
DI
insensible respiratory
Term
hypervolemic hypernatremia causes and treatment
Definition
iratogenic (TPN #1)
exogenous steroids
cushings
salt water drowning
primary hyperALD

tx: furosemide, D5W, dialysis
Term
signs of hypernatremia
Definition
altered mental status
weakness
lethargy
confusion
seizure
coma
oliguria, thirst, dry
Term
causes of hypertonic hyponatremia
Definition
hyperglycemia, mannitol, sorbitol, glycerol, contrast
Term
causes of isotonic hyponatremia
Definition
pseudohyponatremia
Term
causes of hypotonic euvolemic hyponatremia
Definition
SIADH, psychogenic, post-op free water, hypothyroid, oxytocin, haloperidol, cyclophosphomide, antineoplastic drugs
Term
causes of hypotonic hypervolemic hyponatremia
Definition
urine Na <10: CHF, cirrhosis, nephrotic
urine Na >10: renal failure
Term
causes of hypotonic hypovolemic hyponatremia
Definition
urine Na <10: diarrhea, vomiting, NG suction, third spacing, burns, diaphoresis, pancreatitis
Urine Na >10: diuretics, Na wasting renal disease, urinary obstruction, hypoALD, addisons, ACEI, ATN
Term
signs of hyponatremia
Definition
headache
delirium
irritable
muscle twitch
increased DTR
increased ICP
seizure
nausea/vomiting/ileus
salivation and lacrimation
HTN
oliguria and anuria
Term
complication of overcorrection hyper and hyponatemia
Definition
reduction of Na faster than 12/d can cause cerebral edema

addition of Na >12/d can cause central pontine myelinosis
Term
what paraneoplastic syndrome causes hypercalcemia
Definition
squamous cell lung cancer
Term
signs and treatment of hypercalcemia
Definition
easy fracture, deep bone pain, weakness, osteofibrosis cystica, nephrolithiasis, nephrocalcinosis, renal failure, nausea, vomiting, constipation, peptic ulcers, change in mental status, polyuria, HTN, weight loss
short QT interval
tx: hydrate, calcitonin, bisphosphonates
Term
signs of hypocalcemia
Definition
chovsteks, trosseaus, seizure, long QT, dyspnea, arrhythmia, numbness and tingling in fingers and does
Term
calculation for free Ca
Definition
ionized Ca = total Ca - (albumin x 0.8)
Term
signs of hypophosphatemia
Definition
encephalopathy, confusion, seizure, numbness, paresthesia, weakness, bone pain, rickets, osteomalacia, hemolysis, RBC/WBC/platelet dysfunction, cardiomyopathy, myocardial depression, rhabdomyolysis, anorexia, difficulty to wean from ventilator
Term
signs of hyperphosphatemia
Definition
metastastic calcification, soft tissue calcification, hypocalcemia signs
Term
what makes K go into cells
Definition
insulin, B-agonists, alkalosis
Term
what makes K come out of cells
Definition
less insulin, BB, acidosis, digoxin, cell lysis
Term
signs of hyperkalemia
Definition
peaked T waves when >6.5, weakness, flaccid paralysis, dereased DTR, respiratory failure, nausea, vomiting, colic, diarrhea, metabolic alkalosis
Term
treat hyperkalemia
Definition
C BIG K
Ca gluconate
B agonist
Insulin
Glucose
Kayexelate
Term
sighs of hypokalemia
Definition
fatigue, weakness, paralysis, arrhythmia, hyporeflexia, paresthesia, ileus, polyuria, polydypsia, nausea, vomiting, constipation, exacerbates digitalis toxicity
T wave flattening or inversoin, U waves
Term
signs of hypomagnesemia
Definition
muscle twitching, tremor, hyperreflexia, vomiting, diarrhea, mental status change, seizure, hypocalcemia, hypokalemia, prolonged QT, U waves, torsades
Term
signs of hypermagnesmia
Definition
nausea, weakness, facial paresthesia, loss of DTR, somnolence, coma, paralysis, respiratory failure, cardiac death, death
increased PR, wide QRS, elevated T waves
Term
type 2 RTA: patho, cause, tx, signs
Definition
NaH pump in PCT does not work, bicarb stays in urine, K stays in urine, H and Cl stay in blood
urine is pH <5.3 because CT intercalated later can acidify it

causes: myltiple myeloma, fanconi, wilsons, amyloid, low vitamin D, lead, nephrotic syndromes

signs: bone lesons, non-gap metabolic acidosis

treatment: bicarb, Na restriction, thiazides, loops, K
Term
type 1 RTA: patho, cause, tx
Definition
CT intercalated cells ATP K/H pump does not work, bicarb isn't made, H and Cl stay in blood, CaP form in urine, Na and K stay in urine
urine is pH >5.3

cause: myltiple myeloma, sjogerns, amphotricin B, analgesics, infection, SLE, obstruction

signs: non-gap metabolic acidosis, calcium kidney stones

tx: bicarb, thiazides, K, P salts to excrete tetratable acid
Term
type 4 RTA: patho, cause, treatment, signs
Definition
low ALD stops ATP Na/K pump and Na/K channels in CT principal cells, K and H stay in blood, Na stays in urine
urine pH <5.3

cause: low ALD or ALD resistance

signs: non-gap metabolic acidosis

Tx: fludrocortisone, K restriction
Term
hartnup syndrome: cause, signs, treatment
Definition
AR defect in AA transport decreases reabsorption of tryptophan causing nicotinamide deficiency

signs: pellagra (dermatitis, diarrhea, ataxia, dementia)

tx: nicotamide if symptomatic
Term
fanconi syndrome: cause, signs, treatment
Definition
PCT defect in transport of glucose, AA, Na,K, uric acid, bicarb, inherited or acquired (Tetracycline expired)

glocusuria, proteinuria, polyuria, dehydration, hypercalcuria, hyperkalemia, RTA2, phosphaturia (rickets, impaired growth, osteomalacia, oseoperosis, fractures)

tx: P, K, alkali, salt, hydration
Term
define kidney risk, injury, failure, loss, and ESRD
Definition
risk: 1.5xCR or 50% GFR
injury: 2xCR or 50% GFR
failure: 3xCR or 75%GFR
loss: complete loss of kindey function for >4wk
ESRD: complete loss of kidney function for >3mo
Term
signs and causes of pre-renal failure
Definition
renal artery stenosis, hypovolemia, CHF, cirrhosis, NSAID, ACEI, sepsis, drug toxicity

oliguria, BUN:CR>20, urine Na<20, urine osmol >500, hayline casts
Term
signs and causes of intrarenal failure
Definition
ATN (drugs, toxins), glomerular disease, vascular disease (TTP, HUS), AIN

BUN:CR<20, urine Na>40, urine osm <350
Term
causes and signs of acute tubular necrosis
Definition
shock, hemorrhage, sepsis, DIC, heart failure, aminoglycosides, vanco, contrast, poisons, NSAID, rhabdo, multiple myeloma, displatin, hemolysis, amphotericin, ACEI, sulfa

oliguria 10-14d <500mL/d and azotemia
then duiretic <500mL/d
then recuvery

increased FeNa, BUN, CR, muddy brown granular casts, renal rubular casts, low urine osm
Term
signs of uremia
Definition
pericarditis with normal EKG
encephalitis
fatigue
anorexia
metallic taste
puritis
vomiting
weight loss
change in mental status
platelet dysfunction
Term
what electrolyte imbalances does renal failure cause
Definition
hyperkalemia
metabolic acidosis with anion gap
hypocalcemia
hyponatremia
hyperphosphatemia
uremia
Term
causes and signs of chronic kidney disease
Definition
#1 DM, #2 HTN, chronic GN, interstitial nephritis, polycystic kidney

uremia, brown skin, secondary renal osteodystrophy, normochromic anemia (no EPO), decreased testosterone, amenorrhea, calchyphylaxis percipitation
hypocalcemia, hyperphosphatemia, hyperkalemia, hyperMg, metabolic acidosis
Term
indications for dialysis
Definition
CR>12, BUN>100, uremia symptoms, fluid overload, AKI, CKD, pulmonary edema, electrolyte disturbance, metabolic acidosis, drug toxicity
Term
complications of dialysis
Definition
EPO and vitamin D deficiency
hypotension: MI, fatigue
hypoosmolality of ECF compared to brain: nausea, vomiting, headache, seizure, coma
first use syndrome: CP, back pain, anaphylaxis
anticoagulation: hemorrhage, hematoma
infection and sepsis
amyloidosis of B2 microglobin in bones and joints
fluid overload and dyspnea
hyperglycemia and hyperTG (peritoneal)
inguinal hernia (peritoneal)
Term
causes and signs of AIN
Definition
PCN, sulfa, aminoglycosides, NSAIDs, allopurinol, PPIs, diuretics, cadmium, lead, copper, murcery, mushrooms, infection, sarcoidosis, amyloidosis, rhabdo

rash, fever, nausea, vomiting, hematuria, increased CR, eosinophilia, eosinophils in urine and casts, renal biopsy with inflammatory lymphocytes, renal tubular necrosis
Term
causes and signs of renal papillary necrosis
Definition
analgesic nephropathy, DM, sickle cell, urinary obstruction, UTI, chronic alcoholism, renal transplant rejection

flank pain, fever, abdominal pain, hematuria, excretory urogra with change in papilla, CT or IVP with medullary ring shadows and hydronephrosis
Term
torsion of appendix testis cause, sx, tx
Definition
appendix testis is remnant of paramesonephric duct (mullerian duct) in superior testicular pole
torsion is benign, kids 7-14yo, acute pain at superior or inferior pole, normal cremasteric reflex, tenderness to palpation, gangrenous testies (blue dot through scrotum)

tx: snalgesics, scrotal support, bed rest
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