Diagnostics Flashcards
What lab value is the most common measure of renal function?
Normal is 90 - 120 ml/min
eGFR
What formulas are used to calculate eGFR?
Cockcroft-Gault
MDRD
What lab value is a measurement of the byproduct of creatine phosphate which is almost completely filtered by the kidney?
Serum Creatinine
This lab test is a collection of urine over 24 hours?
24 hour urine
A ____ urine test is a great for evaluating urinary excretion of albumin
Spot urine
Which imaging modality is best for assessing things such as hydronephrosis, PCKD, obstructive uropathy, or kidneys masses.
A. US
B. CT
C. MRI
D. XR (KUB)
A. US
What is the most diagnostic imaging modality in a patient with acute flank pain and hematuria?
CT Abdomen/Pelvis (Non-contrast)
Which imaging modality is most sensitive and specific for evaluating for renal artery stenosis?
A. US
B. CT
C. MRI / MRA
D. XR (KUB)
C. MRI / MRA
What is the ‘gold standard’ for diagnosing renal artery stenosis?
(Hint: This is also therapeutic)
Renal Angiography
A renal _____ is used for evaluation of unexplained AKI / CKD, diagnosing systemic diseases such as Goodpasture’s, and managing renal transplants.
Renal Biopsy
What is a common complication of a renal biopsy?
Hematuria
What is the normal pH range on ABG?
7.35 - 7.45
What is the normal CO2 range on ABG?
32 - 48
What is the normal O2 range on ABG?
80 - 105
What is the normal HCO3- range on ABG?
22 - 26
How is an ABG typical presented/written?
pH/CO2/O2/HCO3⁻/BE
ex: 7.41/38/92/25/0
What lab is a calculation of the difference of cations and unmeasured anions in the plasma?
Normal: 10-12 mmol/L
Anion Gap
An acidosis due to acid production/accumulation will have a ______ (wide/normal/narrow) anion gap
Wide
WAGMA
Acidosis due to HCO3- loss will have a ______ (wide/normal/narrow) anion gap
Normal
An _____ test should be preformed prior to drawing an ABG from the radial artery?
Allen Test
What should be drawn simultaneously with an ABG?
Serum Chemistry
