r (R)
rectal
R (resp)
respirations, rectal
RAIU
radioactive iodine uptake study
RBC
red blood cell/count
reg
regular
Rh
rhesus
RK
radial keratomy
RL
ringer’s lactate
RLQ, RLL
right lower quadrant, lobe (lung)
RML
right middle lobe (lung)
RO
reality orientation
R/O
rule out
ROM
range of motion
R.R.
recovery room
RUQ, RLL
right upper quadrant, lobe (lung)
rt
right
RV
residual volume
Rx
take (prescription)