Renal: Diagnostics/Imaging Flashcards by Anthony Carli

Q

This lab:

used to measure renal function

freely filtered and excreted

A

creatinine (0.5-1.2)

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Q

This lab:

product of protein catabolism

elevated in dehydration, GI bleed, steroids/tetracyclines

less specific for kidney fxn, correlated with uremia

A

BUN (10-20)

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Q

This lab:

Marker for volume status

A

BUN/Cr ratio

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Q

This lab:

sum of filtration rates in all functioning nephrons

not measured directly

tracks progression of disease and for dosing meds

A

GFR

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Q

Normal GFR for men…

A

130

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Q

Normal GFR for women…

A

120

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Q

This lab:

helpful when dosing medications

approximates GFR

A

Cr clearance

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Q

These labs assess for what condition?

ANA

A

SLE

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Q

These labs assess for what condition?

C-ANCA, P-ANCA

A

granulomatosis w/ polyoangitis

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Q

These labs assess for what condition?

Anti-GBM Abs

A

Goodpasture Syndrome

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Q

These labs assess for what condition?

HBV, HCV
HIV
VDRL serology
Serum Complement

A

glomerulonephritis

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Q

These labs assess for what condition?

antistreptolysin O

A

post-strep glomerulonephritis

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Q

These labs assess for what condition?

SPEP
UPEP

A

multiple myeloma

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Q

These labs assess for what condition?

Cystatin G

A

estimate GFR

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Q

This lab:

screen for prostate cancer and disease progress

A

PSA

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Q

When should PSA screening be considered?

A

shared decision-making, around 50

high-risk 40-45

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Q

1st line test for renal/urinary issues…

A

UA

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Q

What type of casts?

glomerulonephritis

vasculitis

A

RBC

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Q

What type of casts?

tubulointerstitial disease

acute pylonephritis

glomerular disorder

Study These Flashcards

A

WBC

Q

What type of casts?

acute tubular necrosis

glomerulonephritis

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A

Epithelial cell

Q

What type of casts?

Hyaline

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A

dehydration

Q

This lab…

ID causative organism of UTI

sensitive abx

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A

urine cx and sensitivity

Q

This lab…

earliest clinically detectable stage of diabetic nephropathy

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A

microalbumin

Q

This lab…

seen in acute interstitial nephritis

Study These Flashcards

A

urine eosinophils

This lab... provides better quantitative measure of proteinuria or GFR

24 hr urine collection

This lab... if you suspect multiple myeloma can detect bence jones protein

UPEP

What are the 2 types of X-ray for renal issues?

abd. X-Ray KUB (supine and upright)

What is a limitation to KUB x-ray?

miss smaller stones, radiolucent stones, sones overlaying bony structures

What 3 things can KUB identify?

calcification prostatic calculi bladder distension

This is the TOC to exclude urinary tract obstruction good initial test for abdominal flank pain

Renal US

This can evaluate renal vascular flow...

renal doppler US

Hypodense mass with internal echos on US indicates...

pylonephritis

What type of CT? detect radiolucent stones not seen on KUB

non-contrast

What type of CT? used to identify vascular problems

CT angiography

How long must metformin be held after contrast CT?

48 hrs

Triangular hypodense streaks are seen on Contrast CT spreading from pelvis to renal cortex... this can indicate...

bilateral pylonephritis

This imaging modality is gold standard for renal vein thrombosis

MRI

This imaging modality: - size/shape of GU tract - ID kidney stones/obstruction - contrast X-ray - measures excretory fxn through length of time for contrast passage

IVP

String of pearls appearing on renal angiography...

fibromuscular dysplasia

This imaging modality: Bladder filled with contrast X-ray taken to visualize in bladder visualizes primary bladder conditions better than IVP

cystourethrogram

This imaging modality can detect: VIR Distortion of bladder fistula perf

cystourethrogram

Is post-procedure hematuria expected with cystoscopy? for how long?

yes, clear in 3 voids

This imaging is indicated for: - assess bladder/ureteral involvement due to malignancy - evaluate urogynecologic conditions - dx intrinsic bladder disease

cystoscopy

Imaging modality for testicular pathology...

testicular US

Imaging performed transrectally that can help detect prostate cancer with increased PSA

prostate US