Shared Flashcard Set

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Clinical Medicine - Nephrology/Urology
N/A
159
Medical
Graduate
10/09/2011

Additional Medical Flashcards

 


 

Cards

Term
The ____ kidney is slightly higher than the other
Definition
left
Term
kidney's are ___ (location) organs
Definition
retroperitoneal
Term
what organs are of most concern for being injured during a hysterectomy?
Definition

bladder and ureters

 

ureters pass underneath the abdominal vein/artery

Term
process of sperm transportation from where they are made to where they're stored
Definition
seminiferous tubules --> rete testes --> epididymis --> vas
Term
5 main functions of the kidneys
Definition

regulate fluid volume

regulate acid-base balance

help control electrolyte concentration

excrete nitrogenous breakdown products

excrete toxic substances & drugs

 

These fxns will suffer during renal failure

Term
to control fluid volume, you must control the concentration of ____
Definition

sodium

 

too little sodium: hypotension, cardiovascular collapse,d eath

 

too much sodium: hypertension, pulmonary edema, death

Term
The functional unit of the kidney is the ____, which is composed of what 3 things?

Normal urine output is ___ ml/min

kidneys represent 1% of body weight but use __% of O2 and ___% of resting Cardiac output
Definition

nephron: glomerulus, bowman's capsule, collecting tubules

 

urine: 1 ml/min

 

7% of O2, 20-25% CO

Term
estimated rate of kindey filtration
- number of ml of ultrafiltrate produced per min by both kidneys
- is typically 125 ml/min

- best measured by ___ clearance test
- usually measured by ___ or ___
Definition

glomerular filtration rate (GFR)

- inulin = best

- creatinin or cystatin C = usual

Term
azotemia
Definition
renal failure
Term
Things that can influence BUN/Creatinine other than renal failure
Definition

BUN:

- low BMI = low BUN

- GI bleed = high BUN

 

Muscle breakdown = high creatinine

Term
how are BUN and creatinine affected by renal failure?
Definition
both are high
Term
compensation for acidosis
Definition

respiratory: rising CO2 levels trigger increase in ventilation rates so PaCO2 levels fall

 

renal: kidneys conserve HCO3 and excrete H+

 

both happen at the same time

Term
important parts of the abg reports
Definition

1. pH: should be 7.35-7.45

2. PaO2: 70-100mmHg

3. PaCO2: 35-45

4. Bicarbonate concentration: 22-30 nm/ml

Term
Metabolic v. Respiratory acidosis & alkalosis-- causes
Definition

metabolic acidosis: renal failure, diabetic ketoacidosis, ingestion of acidic compounds (aspirin overdose)

 

Respiratory acidosis: resp failure (severe asthma) - high PaCO2

 

metabolic acidosis: prolonged vomiting

respiratory alkalosis: hyperventilation - low PaCo2

Term
Compensation for alkalosis
Definition

Respiratory:  ventilation rate falls - PaCO2 rises

Renal: kidneys excrete HCO3- and retain H+

 

Term
ABG:

1. What does low pH + low PaCO2 imply?

2. Low pH + high PaCO2?

3. High pH + low PaCO2?

4. high pH + high PaCO2?

5. Normal pH + high PaCO2?
Definition

1. low pH + low PaCO2 = metabolic acidosis w/ resp compensation

- renal failure or ingestion of acidic compounds

 

2. Low pH + high PaCO2 = resp acidosis

- resp failure

 

3. high pH + low PaCO2 = rep alkalosis

- hyperventilation

 

4. high pH + high PaCo2 = metabolic alkalosis with resp compensation

 

5. Normal OR if HCO3- is increased = compensated resp acidosis

- kidneys ar holding onto bicarbonate to compensate the acidosis

Term
lower v. upper UTI
Definition

lower: acute cystitis

 

upper: acute pyelonephritis

Term
dx?

irritative voiding sx - urinary frequency, urgency, pain
hematuria (microscopic or gross)
fever (esp in kids)


UA:
- cloudy or bloody
- increased WBC, RBC, bacteria
Definition
cystitis
Term
fever, nausea, vomiting, diarrhea
flank pain
+/- voiding symptoms

UA:
- cloudy or bloody
- increased WBC, RBC, bacteria
- casts
Definition
pyeloneprhitis
Term
female <5 y/o with unexplained fever, think?
Definition
UTI
Term
criteria for bacturia
Definition

clean catch = 100,000 (10^5)

catheter: 100-10,000 (10^2 - 10^5)

 

 

Term
Pathogenic microbes for UTIs

1. most common for UTI. protists and fungi
2. "regular" bacteria -- mycoplasma, chlamydia, rickettsia
3. viruses and prions
Definition

1. eubacteria

2. prokaryotes

3. non-living

Term
what color are gram + and gram -?
Definition

gram +  blue

gram - red

Term
what gram classification?

1. staph, strep, enterococcus
2. bacillus antrhacis, corynebacterium diphteriae, clostridium
3. neisseria gonorrhea & meningitidis
4. e. cli, proteus mirabilis, salmonella, klebsiella
Definition
1. gram + cocci
2. gram + bacilli
3. gram neg cocci
4. gram neg bacilli


Term
__ are most common organisms for UTI, especially ___

next most common are ___ or ___

organisms are often atypical in ___ settings
Definition

gram neg - coliform

 

staph saprophyticus and enterococcus

 

atypical in hospital-acquired

Term
UTI tx
Definition

supportive - hydration, vit C, cranberry juice

abx - usually for cystitis, ALWAYS for pyelonephritis

hospitalization possible for pyelo

Term
first choice tx for uncomplicated UTI

tx for more complicated pts?
Definition

uncomplicated: co-timoxazole/trimethoprim-sulfamethoxazole /bactrim

 

complicated: fluoroquinolones (cipro)

Term
UTI complications:

1. acute UTI will require delay in ___ surgery

2. untreated cystitis can become ____

3. untreated pyelonephritis or frequent infections can become ____
Definition

orthopedic

pyelo

kidney damage

Term
prevention of recurrent UTI in young women
Definition

hydrate well

empty bladder before and after intercourse

abx before IC

long term low dose abx

Term
anatomical variant in which the ureter inserts on the bladder incorrectly so that urine goes back up into the ureter

can cause frequent UTI in peds
Definition
vesicoureteral reflux
Term
supersaturation of urine with insoluble materials/minerals

commmon when urine flow is low, mineral production is high, urine mineral concentration is high
Definition
renal stones
Term
2 kinds of nephrolithiasis
Definition

nephrocalcinosis

kidney stones

Term
uncommon disorder w/ extensive diffuse parenchymal renal calcifications. typically due to inherited metabolic disorders. may be significant enough to cause renal failure

on xray or CT:
- diffuse calcifications throughout both kidneys.
- calcifications in glomeruli instead of calices
Definition
nephrocalcinosis
Term
urate, cystine, or struvite stones that are too large to pass adn fill up renal pelvis
Definition
staghorn calculi
Term
afebrile + colicky pain + hematuria --> think?

complication of this?
Definition

ureteral stone

 

complication: ureteral occlusion leading to hydronephrosis

Term
dilation of renal collecting system due to outflow obstruction

coudl cause renal failure if not relieved

causes: stones, BPH, malignancy
Definition
hydronephrosis
Term
kidney stone tx
Definition

supportive - spontaneous passage

- analgesia + IV fluids to enhance flow

 

ureteroscopic retrieval

 

surgical removal

 

lithotripsy -- extracorporeal shock wave lithotripsy to break up the stone

Term
most common method of renal and ureteral stone removal

non-invansive but may require sedation and analgesia

is capable of causing renal damage

sends shock waves to break up stones into smaller sizes that can be ecreted
Definition
Term
renal stone prevention
Definition

hydration + good urine flow

 

- urate: regulate uric acid (allopurinol)

- calcium: treat hypercalcemia - thiazides

Term
Common cause of urge incontinence in both men and women

involves detrusor overactivity - usually idiopathic
- occasionally due to bladder stone or lesion

tx?
Definition

intrinsic bladder dysfunction

 

txx: cholinergic blockers (antimuscarinic)

or bladder training - voiding every 1-2 hours

Term
anatomic urinary incontinence:

- gynecological problem: ____
- loss of normal vesico-urethral angle (prolapsed uterus, cystocele)
- contributing factors: vaginal deliveries, estrogen deficiency, chronic increased intraabdominal pressure (obesity, cough, constipation)

typical pt: >10 years post-menopausal + several vaginal deliveries

often brought on by a cough, laugh, or sneeze

tx?
Definition

stress incontinence

 

tx: pelvic relaxation (kegels)

- estrogen replacement

- reduced abdominal pressure

- surgery

Term
surgeries to correct incontinence:

1. repairs cystocele. good initial response rate, high recurrence

2. suture or sling procedures to keep urethra up
Definition

anterior colporraphy

 

urethropexy

Term
urinary incontinence seen in women > 40 y/o
may be difficult to dx - need urodynamic testing

caused by coughing that causes spasming
Definition
combined stress and urgency incontinence
Term
common cause of urologic referral - more common after age 40
women >> men

uknown cause

bladder cauess pain as it fills, relieved w/ voiding
urgency + frequency
simulates UTI
urge incontinence may be present

cystoscopy: submucosal hemorrahge "glomerulations"

tx?
Definition

interstitial cystitis

 

tx:often spontaneously resolves

amitriptyline - first line

nifedipine - adjunct

hydrodistention - releive sx

intravesicular instillation for resistent cases

Term
most common benign tumor in men
- 50% by age 60
- 80% by age 80
about half are asymptomatic
- somehow related to the androgen Dihydrotestosterone (DHT)
- somehow related to estradiol (obese men have more, and have higher risk)

sx:
- obstructive - decreased force and caliber of sream, hesitancy, sensation of incomplete emptying, double voiding (twice w/in two hours), straining to urinate, post-void dribbling
- irritative - urgency, frequency, nocturnal voiding

main long term concern?

dx?
tx?
Definition

BPH

 

long term concern: hydronephrosis due to obstruction of flow

 

dx: sx + enlarged prostate on DRE

+ transrectal ultrasound

 

tx:

observation - some will improve

, herbs/dietary - saw palmetto

, medical - alpha blockers, 5-alpha reductase inhibitors

, surgical

Term
process of converting androgens to estrogens
Definition
aromatization
Term
BPH is or is not a precancerous condition?
Definition
not
Term
autonomic influences on detrusor vs. bladder sphincter
Definition

detrusor: parasympathetic

- cholinergic drugs: urgency and frequency

- anticholinergic drugs: urinary retention

 

sphincter: sympathetic

- alpha blockers improve urine flow by relaxing sphincter

Term
what are some alpha blockers used to treat BPH?
Definition

tamsulosin (flowmax)

Prazosin (minipress)

 

all end in -osin

Term
What are some 5-alpha reductase inhibitors used to treat BPH?
Definition

finasteride (propecia)

dutasteride (avodart)

 

also used for male pattern baldness

Term
TURP
Definition

transurethral prostatectomy

 

uses cystoscope w/ resectoscope

 

75-96% chance of improvement

 

complications: 0.5-1% risk of death,

- incontinences, impotence, retrograde ejaculation

Term
good alternative for pts wtih significant problems from BPH r who aren't surgical candidates
Definition
urethral stent
Term
second leading cause of male cancer deaths behind lung
Definition
prostate
Term
Two kinds of prostate cancer
Definition

1. isolated malignant foci. stable, controlled, restricted. essentially CIS. may be considered "normal"

2. progressive cancer -capable of local extension and distant metastasis

 

Term
prostate ca sx
Definition

early stages: none

often sx of BPH

 

late stages: pain, urinary obstruction

Term
prostate ca dx

75% occur in ___ zone of prostate
Definition

DRE

trans-rectal ultrasound w/ needle biopsy

PSA screening

 

75% in peripheral zone

Term
increased levels of PSA are seen in what diseases?

what are the cut off values?
Definition

BPH

Prostate cancer

prostatitis

 

cut offs:

- Normal <4ng/ml

- moderate: 4.1-10ng/ml - 18-30% chance of cancer

- high: >10 ng/ml - 50-70% chance of cancer

Term
prostate cancer tx
Definition

radical prostatectomy

- stages T1 & T2

excise prostate, seminal vesicles, vas + sample lymph nodes

 

radiation

 

medical: endorine and cytotoxic chemo

Term
enocrine tx for prostate cancer
goal?
surgery
medicals tx
Definition

goal: eliminate effects of T and DHT

surgery: bilateral orchiectomy

 

medical: GnRH agonist (lupron), anti-adrogens, estrogens

Term
___ can be used as a guide to tell if prostate cancer has returned. However, 20% of cancers don't make this.
Definition
PSA
Term
- often due to smoking or exposure to industrial dyes/solvents
- most have multi-centric origin (multiple lesions) wiht villus-like projections
- most are transitional cell carcinoma

sx:
- hematuria is most commonly presenting symptom
- irritative voiding sx
- pain and masses may be noted with advanced disease

dx?
tx/
Definition

bladder cancer

 

dx: cystoscopy w/ biopsy

filling defect on IVP

 

tx: transurethral resection - early disease

- cystectomy

- chemo - something about bacille calmette guerin

radiation

Term
pt with iron deficiency anemia with no explanation -- think?
Definition
bladder ca
Term
bladder cancer prognosis
Definition

10 year:

T1-T2: 81-90%

T3: 60-70%

T4: 40-50%

 

ANY stage w/ pos nodes: 30-35%

Term
peak incidence 50-70 y/o
- men:women 2:1
- smoking is cause of 20-30%, obesity is risk factor
- most commonly _____ carcinoma


sx:
- hematuria
- flank pain
- weight loss
- anemia
- palpable mass

dx?
tx?
Definition

renal cancer

renal cell carcinoma

 

dx: cystoscopy

CT of abdomen and chest

UA

 

tx: surgery if no distant spread

- radiation, chemo, and immunotherapy not very effective

 

Term
renal cancer prognosis
Definition

5 year survival:

stage I & II: 65-70%

Stage III: 42%

- IV: 11%

Term
- Peak incidence age 15-40
- 1/3 are ___, 2/3 are ___
- risk factors: cryptorchidism, DES exposure intrauterine
- biochemical markers: HCG, AFP, LDH

sx:
- PAINLESS TESTICULAR MASS
- rarely systemic sx: malaise, weightloss, fever

dx?
tx?
Definition

testicular cancer

1/3 seminoma, 2/3 non-seminoma

 

dx: ultrasound

 

tx: unilateral orchiectomy, retroperitoneal lymph node dissection, CT

radiation for seminomas

chemo

Term
Testicular cancer prognosis
Definition

stage 1: 95-98% long term survival

II: 90%

III: 55-80%

Term
30 y/o male w/ pos home pregnancy test
Definition
HCG-secreting testicular cancer
Term
most common in men >40 y/o

sx: fever, perineal/sacral/suprapubic pain, irritative voiding sx
classic triad: urgency, frequency, dysuria

CBC: leukocytosis w/ left shift
UA: pyuria, bacturia, hematuria
cultures: pos growth from urine and blood

tx?
Caution?
common organisms?
Definition

acute prostatitis

 

caution: perform DRE very gently. excessive palpation can result in septicemia

 

organisms: gram neg rods (e. coli, pseudomonas) or gram + cocci (enterococcus)

 

tx:

- outpt: fluoroquinolones (cipro)

- inpt: IV abx: ampicillin + aminoglycoside (gentamycin)

Term
- most common in men 40-60 y/o

sx:
irritative voiding
low bain/perineal pain
NO FEVER

intermittent, recurrent pattern
- usually due to non-specific inflammation, some due to chronic low grade infection

IF bacterial (gram neg rods):
UA and CBC neg
Prostatic secretions: leukocytes + bacteria

tx?
Definition

chronic prostatitis


tx: bactrim from 6-12 weeks

Term
- prostatitis that is non-responsivle to abx
- cultures and prostatic fluid are normal
- do cystoscopy to r/o bladder ca
tx?
Definition

inflammatory prostatitis

- maybe alpha blockers for tx

Term
def of hematuria?
Definition
>3 rbc per high powered field
Term
common causes of hematuria

1. dx of exclusion
2. fever, pain, irritative voiding sx. bacteria on UA
3. hematuria + flank pain
4. HTN + hematuria + casts on UA
5. hx of smoking/exposure. labs normal
Definition

1. benign transient hematuria - dx of exclusion

2. infection - UTI or prostatitis

- fever, pain, voiding sx

3. ureteral stone - hematuria + flank pain

4. glomerulonephropathies - nephritic syndrome - need kidney fxn test

5. urologic cancer - labs are normal. hx of exposure/smoking

Term
sudden decrease in renal fxn over appx 48 hours
- inability to maintain fluid and electrolyte balance
- inability to excrete nitrogenous waste
___ is most immediately dangerous problem

Signs:
- creatine increase by 0.5 mg/dl if normal pt (no kidney dz) or >1.0 if kidney dz
- Oliguria: urine output <400-500 ml/day
- Hyperkalemia
- metabolic acidosis

Sx:
- nausea, malaise, altered mental status, dyspnea, edema

UA: hematuria, proteinuria, casts
US: hydronephrosis, masses


RAPID RISE IN BUN/CREATININE + OLIGURIA
Definition

acute renal failure

hyperkalemia - most immediate danger

Term
A common etiology for acute intrinsic renal failure is:

1. tubulointerstitial disease.
2. diabetic nephropathy.
3. decompensated congestive heart failure.
4. obstructing renal calculi.
Definition
1. tubulointerstitial disease
Term
cysteine protease inhibitor produced by all nucleated cells and secrete into bloodstream
- freely filtered by kidney, not reabsorbed
- not affected by body habitus, comorbid conditions, or nutritional state
- elevated in kidney injury
- possibly superior to creatinine as GFR proxy


RARELY USED IN CLINICAL PRACTICE
Definition
cystatin C
Term
Causes of ARF:

1. sudden severe drop in blood pressure (Shock) or interruption of blood flow to the kidneys from severe injury or illness. 55%. Little old lady who has n/v/d and lost fluids so kidneys cant work.
2. direct damage to kidneys by inflammation, toxins, drugs, infection, or reduced blood supply. 40%
3. sudden obstruction of urine flow due to prostate enlargment, kidney stones, bladder tumor, injury. kidneys cant work due to blockage down the line. 5%
Definition

1. prerenal

2. intrarenal

3. postrenal

Term
Due to hypoperfusion (dehydration) or hypotension: low BP or poor CO

4 causes:
1. fall in intravascular volume (diarrhea, diuretics, hemorrhage)
2. fall in intravascular resistance (hypotension, shock, sepsis, ACE and ARBs)
3. renal artery vasoconstriction (NSAIDS, radiocontrast)
4. Low CO
Definition
prerenal ARF
Term
what is "third spacing"
Definition
loss of fluids into tissue space
Term
common drug cause of prerenal ARF. how could it be fixed?
Definition

NSAIDs

 

ACE-I

Term
#3 cause of in-hospital ARF
- occurs 24-48 hours after exposure
- prevention is key: give pt with kidney disease IV fluids before doing this
Definition
contrast induced nephropathy
Term
most common cause of intrinsic renal failure
Definition
acute tubular necrosis
Term
4 causes of intrinsic ARF
Definition

vascular causes

glomerular

tubular

interstitial

Term
composed of:
- post-strep glomerulonephritis
- IgA nephropathy
- Wegener's
- Antiglomerular basement membrane disease
- autoimmune disease

sx:
hematuria, proteinuria, refractory htn (190/100), systemic diseases, RBC casts
Definition
acute glomerulonephritis-nephritic dissease
Term
a pt is started on abx, NSAIDs, or PPI and 5 days later, their creatinine starts rising and they get a rash.

UA: eosinophils >2%, WBC casts
Definition
allergic interstitial nephritis
Term
#1 cause of ARF requiring dialysis
- most commonly from prolonged hypoperfusion (ischemia)
- also from toxic injury - aminoglycosides, rhabdomyolysis, IV contrast)


UA: creatinine goes up 4 days after giving bactrim

3 phases: initiation, maintenance (pt on dialysis), recovery (overcompensation of kidneys)
Definition
acute tubular necrosis (ATN)
Term
ATN
multiple myeloma
uric acid

all are causes of ___ injuries causing ARF
Definition
tubular
Term
caused by ureteral occlusion (stones, cancer, fibrosis) or outflow obstruction (BPH, neurogenic bladder, urinary retention meds)
Definition
obstructive renal failure
Term
What will BUN/Creatinine and UA show in ARF?
Definition

BUN/Creatinine - up

UA:

- sodium, creatinine, urea, eosinophils, sediment, casts, protein

Term
BUN:Creatinine ratio is >20, think ___
Definition
prerenal ARF
Term
what are some conditions which might have increased and decreased BUN
Definition

increased: intravascular volume depletion (prerenal failure), catabolic states, high protein diets, GI bleed, glucocorticoids, tetracycline

 

decreased: liver dz, malnutrition, sickle cell, inappropriate ADH secretion

Term
based on FeNa & FeUrea, how can you tell prerenal and intrinsic causes of ARF
Definition

FeNa <1% or FeUrea <35% -- prerenal

FeNa >2% or FeUrea >50% -- intrinsic

Term
What do these casts indicate?
1. hyaline
2. granular or renal tubular
3. RBC
3. WBC
Definition

hyaline - prerenal ARF

granular: ATN

RBC: acute glomerulonephritis

WBC: AIN or pyelo

Term
pt with unidentified cause of oliguria. what do you NOT want to give them?
Definition
diuretics
Term
When do you need dialysis for ARF?
Definition

AEIOU:

 

A: acidosis (bicarb <15)

E: electrolyte abnormalities - hyperkalemia

I: intoxication

O: overload - urine <400cc x 3 days

U: uremia - confusion, asterixis, pericaridal rub

Term
evidence of structural or functional kidney abnormalities that persist for at least 3 mos w/ or w/o a decline in GFR

Decreased GFR and proteinuria are both important diagnostic abnormalities
Definition
crhonic kidney disease
Term
Stages of chronic kidney disease: description and GFR
Definition

1. kidney damage w/ near normal GFR. Polycystic disease. GFR of 90

2. Kideny damage w/ mildly reduced GFR: 60-89

3. Moderately reduced GFR: 30-59

4. severely decreased GFR: 15-29

5. renal failure and dialysis: GFR <15

Term
What is normal GFR?

At what point should medical intervention occur?
Definition

Normal: 90-100

intervention at 30-59 (moderate delcine)

 

GFR is a good indication of renal function. If you have a GFR of 20, your kidneys are functioning at about 20%

Term
MDRD

in what populations is this an over- or under- estimation?
Definition

estimation of GFR

good for stable renal function. not good for ARF

increased GFR = increased renal function, decreased = decreased

 

overestimation: elderly, malnourished, liver disease

under: normal renal fxn, large muscle mass

Term
most common causes of ESRD
Definition

diabetes

HTN

glomerulonephritis

cystic disease

Term
most common cause of ESRD
- proteinuria (albuminuria) - increases as kidney function decreasesdo
- usually accompanied by retinopathy
- needs close monitoring of BP
Definition
diabetic nephropathy
Term
complications of Chronic kidney disease
Definition

mineral bone disorder - renal osteodystrophy

anemia

HTN

increased cardio events

electrolyte abnormalities

metaoblic acidosis

endocrine abnormalities

Term
changes in bone mineral metabolism and structure that occur when GFR < 30%

high phosphorous --> low ca --> elevated parathyroid hormone --> secondary hyperparathyroidism
decreased Vit D production

tx?
Definition

 renal osteodystrophy

 

tx:

keep Ca x Phos <55

phosphorous restriction

phosphorous binders w/ meals

- Vit D precursor

- Vit D analog

- Calcimimetics

Term
GFR < 30
normochromic, normocytic anemia

usually iron deficient, need IV iron replacement
Erythropoeitin deficiency: goal is to prevent transfusion
Definition
anemia of chronic kidney disease
Term
what are some endocrine changes that happen with ESRD?
Definition

men: lowered testosterone

diminished libido, ED

 

women: lowered estrogen, relative infertility, increased spontaneous abortion

pregnancy: toxemia, worsened renal disease

Term
methods to slow progression of CKD
Definition

treat underlying condition

- ace/arb if proteinuria

- avoid NSAIDs, bactrim, cimetidine

- BP control

- treat metabolic acidosis and high lipids

- smoking cessation

- limit protein intake <0.8 mg/kg/day

- nephrologist when GFR <60%

Term
when is dialysis requried for esrd?
Definition

GFR <15 and/or:

uremic sx (fatigue, malaise, sob, anorexia)

volume overload

refractory hyperkalemia

Term
at what GFR is a person a candidate for kidney replacement
Definition
<20
Term
1. proliferative glomerulonephritis
- crescentic glomerulonephritis and rapid proliferative glomerulonephritis
- more acute, more aggressive
- moon-shaped crescent on glomerulus
2. membranous glomerulonephritis
- minimal change disease
- focal segmental glomerulosclerosis
3. membranoproliferative glomerulonephritis
Definition

1. nephritis syndrome

2. nephrotic syndrome

3. combined syndrome

Term
membranous glomerulonephritis

signs:
- proteinuria > 3g/day
- hypoalbuminemia
- edema - due to third spaceing
- hyperlipidemia
- lipiduria

primary: minimal change disease
Secondary: due to systemic illness
Definition
nephrotic syndrome
Term
#1 cause of glomerular disease in kids
cause is unknown
- overall prognosis is excellent
- can be induced by NSAIDS
- renal biopsy: normal

sx: proteinuria

tx?
Definition

minimal change disease (nephrotic syndrome)

 

tx: steroids, ACEI/ARB

Term
#1 cuase of nephrotic disease in adults
- immune complex deposits in basement membrane
- usually primary (idiopathic)
- secondary - cancer
tx with ACEI in mild disease and steroids in severe

if pt has this -- make sure they get screened for cancer
if pt has cancer + proteinuria --> think this
Definition
membranous nephrotic syndrome
Term
#2 cause of nephrotic syndrome in adults
- primary is idiopathic
- secondary: HIV, Obesity
- tx: steroids
Definition
focal segmental glomeruloscerlosis (FSGS)
Term
___ is by far the most common cause of nephrotic syndrome
Definition
dm
Term
nephritic syndrome: PHARAOH signs and symptoms
Definition

Proteinuria/edema

Hematuria

Azotemia (elevated BUN)

Red blood cell casts

Anti-strep titers

Oligouria

Hypertension (refractory)

 

RBC casts + proteinuria + refractory HTN --> think nephritic syndrome

Term
renal failure developing over a few days or a few weeks
- results from immunologic dysfunction such as anti-gbm antibodies, anca (anti-neutrophil cytoplasmic antibodies), IgA nephropathy

classic example: post-strep glomerulonephritis
- common in kids
Definition
acute nephritic syndrome
Term
typically occurs 10-14 days after beta hemolytic strep infection (pharyngitis or impetigo)
- most common in kids 2-6

sx: malaise, nausea, vomiting, HA, back pain
nephritic syndrome: hematuria, htn, some proteinuria, edema
Definition

poststreptococcal glomerulonephritis

 

tx: eradicate strep (abx), supportive care, recovery in 6-8 weeks

20% chance of reduced GFR in adults

Term
acute nephritic syndromes:

1. most common cause worldwide. common in asians. flu-like sx + hematuria

2. pulmonary hemorrhage, rapid progressive GN and + anti-GBM antibodies. hemoptysis + blood in urine. tx is plasma exchange

3. ANCA +, wegener's. lung problems + renal problems

4. associated wtih hep C

5. can havve nephrotic and nephritic properties
Definition

1. IgA nephropathy

2. anti-glomerular basement membrane diseas (goodpasture's syndrome)

 

3. vascultitis

 

4. cryoglobulinemia

 

5. membranoproliferatie GN

Term
general treatment principles for nephritic and nephrotic syndromes
Definition

1. reduce proteinuria - ACE/ ARB/ NSAIDs

2. Restrict sodium 1-2 g/day, loop or thiazides to maintain urine output

3. low protein diet

4. vit d supplement

5. statins for hyperlipidemia

Term
3 tubular and tubulointerstitial disorders
Definition

cystic

acute tubulointerstitial nephritis

chronic tubulointerstitial nephritis

Term
1. account for 65-70% of all renal masses, are benign and require no tx unless cyst is complex. common with age.

2. increased # of cysts in CKD/ESRD pts. 2-7% develop in renal cell cancer
Definition

1. solitary cysts

2. acquired cystic disease

Term
- accounts for 4-5% of all end-stage renal disease in the US
- slowly progressive - as cysts grow, they take up more space and the kidneys can't work
- screen family members in their 2nd-3rd decade - cysts probably won't be big enough to pick up before then
- associated with cerebral aneurysms and hepatic cysts
- most commonly presents in 3rd and 4th decades with FLANK PAIN/BACK PAIN AND RENAL FAILURE OR HTN OR HEMATURIA

tx
Definition

autosomal dominant polycystic kidenys disease

 

hxof polycystic kidney + fam hx of cerebral aneurysm --> get MRI at age 30

 

tx: ACE inhibitors to preserve renal fxn

treat pain

quinolones for cyst infection

screen for cerebral aneurysm

Term
acute renal failure due to drug reactions (abx, nsaids, ppis, diuretics) -- most common, systemic infections, or idiopathic
Definition

acute tubulointerstitial nephritis

 

tx: steroids

Term
chronic decline in renal function due to obstruction, NSAIDs, heavy metals, or sarcoidosis
Definition
chronic tubulointerstitial nephritis
Term
What are some things that IVP are used to diagnose?
Definition


UTI


kidney stone


bladder stone

enlarged prostate

kidney cyst

tumor










Term
indicated in screening of fetal deformities as a marker for some cancers including renal cell carcinoma and used to follow the cancers displaying the marker
Definition
alpha fetoprotein
Term
3 renal control elements
Definition

sympathetic ns

R-A-A system

baroreceptors

Term
ECF volume contraction is AKA ____
manifest as decreased plasma volume and hypotension/tachy

causes?
Definition

dehydration

caues: diarrhea, hyperthermia, vomiting, burns, alcoholism, malnutrition,

 

electrolyte imbalances: Hypo/hypernatremia!

Term
ECF volume expansion often coexists and causes ____

causes: water retention due to what?
Definition

hypertension

 

water retention:

- CHF

- high sodium

- cirrhosis

- nephrotic syndrome

- corticosteroids

- hyperaldosterone

- low protein

- hypertonic fluids

Term
causes of hypocalcemia

what two signs are associated with this?
Definition

alcoholism, breast fed infants, low sunlight, malabsorption, acute pancreatitis, PTH levels, diuretics


trousseau's sign: wrist and thumb drop when inflate BP cuff

Chvostek's sign: tapping facial nerve causes twitch

Term
What dx?
risk factors: smoking, obesity
Sx: hematuria, flank pain, weight loss, anemia
HEMATURIA MAY BE ONLY SX
Dx?
TX?
Definition

Renal Cancer

dx: CT w/ contrast

tx: refer to nephrology for radical nephrectomy

Term
what is the best tx for renal cancer?
Definition
radical nephrectomy
Term
What is the gold standard diagnostic study for polycystic kidney disease?
Definition
CT
Term
flank and back pain + pos family hx of aneurysm
dx with CT and US
UA: normal or hematuria
normal GFR

dx?
tx?
Long term complications?
Definition

polycystic kidney disease

50% develop ESRD by 60

tx: ACEI

treat cyst infection

low caffeine, good hydration, low salt

transplant

monitor for cerebral aneurysm

Term
sudden increase in BUN/Cr + sudden decrease in urine production in CHF pt
Definition
ARF
Term
most common cause of increased creatinine?
Definition
glucocorticoids
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