measurements
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100

mL

milliliter   

100

NA

nurse assistant 

100

RBC

red blood cell

100

SOB

Short of breath 

100

OD

overdose 

200

mm

millimeter 

200

DOB

date of birth 

200

lbs

pounds 

200

DOA

dead on arrival 

200

CA

cancer 

300

mg 

milligram 

300

BR

bedrest

300

HBV

Hepatitis B Virus 

300

HT

height 

300

HA

headache 

400

tbsp

tablespoon

400

PT

physical therapy  

400

RR

recovery room

400

SIDS 

sudden infant death syndrome 
400

BM

bowel movement 

500
cc

cubic centimeter 

500

ROM

range of motion

500

MN

midnight 

500

L & D

Labor and delivery 

500

Pre op

before an operation