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TheCodexes · USMLE Step 1 Board Mastery

Abbreviation key

Clinical shorthand used in the Step 1 review book.

AbbreviationMeaning
AKIacute kidney injury
assoc.associated
b/cbecause
CADcoronary artery disease
COPDchronic obstructive pulmonary disease
CSFcerebrospinal fluid
CTcomputed tomography
d/tdue to
DATdirect antiglobulin test
Dxdiagnosis
ECGelectrocardiogram
GFRglomerular filtration rate
HbA2hemoglobin A2
incl.including
MCVmean corpuscular volume
MImyocardial infarction
MRImagnetic resonance imaging
PEpulmonary embolism
ptspatients
RBCred blood cell
RDWred cell distribution width
S1first heart sound
S2second heart sound
S3third heart sound
S4fourth heart sound
Txtreatment
vs.versus
w/with
w/owithout
~approximately
←caused by
↑increases or elevated
→leads to; next step
↓decreases or reduced
≤less than or equal to
≥greater than or equal to
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