2. Renal Flashcards

(73 cards)

1
Q

kidney metabolic rate

A

> 400 kcal/kg tissue/day

HIGH

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2
Q

kidneys CO

A

20-25%

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3
Q

normal glomeruli will filter

A

180 L plasma/day

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4
Q

kidney function

A

regulate water and sodium
volume homeostasis

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5
Q

kidney nephrons

A

1 million

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6
Q

kidney autoregulation

A

50-150 mmHg

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7
Q

what triggers afferent arteriole to dilate or constrict

A

change in Cl-

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8
Q

angiotensin 2 function

A

incr ADH
efferent constriction
incr Na+ absorption in PT
incr aldosterone

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9
Q

aldoserone function

A

incr Na+ absorption from DT

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10
Q

best index of kidney function

A

GFR

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11
Q

normal GFR

A

> 90 mL/min/1.73 m2

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12
Q

after age 20 GFR decreases

A

1% annually

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13
Q

uremia symtoms appear once

A

GFR < 15

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14
Q

easiest marker of kidney function

A

Cr

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15
Q

Cr is byproduct

A

muscle/protein breakdown

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16
Q

why is cr useful

A

not secreted or ecreted

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17
Q

normal Cr (female)

A

0.6-1 mg/dL

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18
Q

normal Cr (male)

A

1-1.3 mg/dL

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19
Q

BUN

A

soft indicator of GFR
can be reabsorbed

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20
Q

what BUN correlates with decr GFR

A

BUN > 50

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21
Q

FENa

A

ratio of Na+ in plasma and urine to ratio of Cr in plasma and urine

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22
Q

FENa < 1%

A

tubule reabsorbing Na appropriately

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23
Q

FENa > 2%

A

tubule failing to recapture Na
tubule dysfunction

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24
Q

FENa > 3%

A

acute tubular necrosis

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25
normal Urine specific gravity
> 1.018
26
what 2 things can affect ability for tubules to concentrate urine
diuretics hyperglycemia
27
prerenal AKI
decr perfusion or blood flow
28
renal AKI
directly affects kidney or nephron
29
postrenal AKI
something blocking urine outflow
30
prerenal causes
hemorrhage gi losses burns cardiogenic shock surgery sepsis
31
renal causes
acute tubular necrosis dehydration contrast dye NSAIDs antifreeze acute golmerulonephritis vasculitis interstitial nephritis
32
postrenal causes
nephrolithiasis BPH bladder malignancy cystic bleeding/clots ureter ligation
33
AKI diagnosis
Cr incr 0.3 in 48 hrs or 50+% incr over 7 days
34
severe AKI inidcation
oliguria < 100 mL/day
35
nephrotic syndrome
severe proteinuria > 3.5 g daily low albumin
36
CKD stage 2
GFR 60-90 mild
37
CKD stage 3a
GFR 45-60 mild mod
38
CKD stage 3b
GFR 30-45 mod sev
39
CKD stage 4
GFR 15-30 sev
40
CKD stage 5
GFR < 15 kidney failure
41
which stage CKD may need dialysis
stage 4
42
which stage CKD will need dialysis
stage 5
43
uremic syndrome
constellation of symptoms that manifest once CKD progresses to 10% normal kidney function affects all other organ systems
44
midodrine effect
incr BP during dialysis days
45
uremic syndrome S+S
HTN LVH diastolic dysfunction pericarditis pulm edema hyponatremai hyperkalemia hypomag hyperphos hypercal metabolic acidosis anemia hyperparathyroid
46
does ESRD affect propofol
no
47
does ESRD affect etomidate
no
48
which induction drugs are affected by ESRD
thiopental benzos ** decr protein binding** **decr dose**
49
opioid dosing in ESRD
lower doses longer intervals
50
opioid not recommended in ESRD
meperidine can cause seizures
51
best opioid for ESRD
fentanyl (dilaudid decent)
52
which muscle relaxants are predicatable and not prolonged in ESRD
atracurium cisatracurium
53
which muscle relaxants will have peaked T waves in ESRD
sux
54
laudanosine can cause
neuroexcitiation seizures
55
definitive managment of ESRD
dialysis
56
peritoneal dialysis advantages
at home no fluid shifts
57
peritoneal dialysis disadvantages
cannot change volume status infection risk
58
how many hemodialysis sessions
3 sessions per week 3 hours long
59
types of vascular access for hemodialysis
temporaty catheter tunnele catheter AV fistula AV graft
60
hemodialysis catheter symptoms
infection
61
AV fistula/graft SE
thrombosis stenosis aneurysms steal syndrome
62
what to ask day of surgery
Cr level dialysis (last dialysis) K+ BP control diabetes/glu level anemia GERD urine output
63
most common anesthetic
MAC
64
BPH
enlarged prostate inhibits urine flow weak stream frequent urgency
65
BPH treatment
TURP
66
TURP syndrome
prostate is vascular and cysto fluids can be forced/absorbed into pts vasculature
67
TURP syndrom pressures
< 15 cmH2O
68
how much fluid can be absorbed through prostate
200 mL/min
69
TURP syndrome issues
fluid overload hyponatremia hyperosmolarity hyperglycinemia
70
TURP irrigation fluid
glycine
71
glycine SE
transient blindness
72
TURP syndrom triad
confusion bradycardia HTN
73
TURP syndrome treatment
remove cause supportive care