PSA Data interpretation

Question 1

Urea rise»Cr rise

Answer 1

Prerenal: dehydration

Question 2

Urea rise&laquo_space;Cr rise

Answer 2

Intrinsic renal: Nephrotoxic antibiotics (gentamicin, vancomycin, and tetracycline), ACEI, NSAIDs

Question 3

Urea rise&laquo_space;Cr rise and a palpable bladder or kidney

Answer 3

Postrenal

Question 4

Raised bilirubin only

Answer 4

Prehepatic

Question 5

Raised bilirubin and AST/ALT

Answer 5

Intrahepatic

Question 6

Raised bilirubin and ALP

Answer 6

Posthepatic

Question 7

Method for determining if patients on supplemental oxygen are still hypoxic

Answer 7

FIO2 is subtracted by 10, if the PaO2 is less more than this they are not hypoxic, less than this= hypoxia

Question 8

ECG normal PR

Answer 8

should be <1 large square

Question 9

Normal width of QRS

Answer 9

<3 small squares

Question 10

Determining if LVH is present

Answer 10

add the largest QRS deflection on V1 to that in v6 if the sum exceeds 3.5 large squares there is LVH

Question 11

Only K is abnormal

Answer 11

If patient is well Suspect an artefact