/P
post, after
p
pulse
P
Phosphorous
PA
posteroanterior
P&A
percussion and auscultation
PAC
Premature auricular contractions
PaO2
Partial arterial oxygen tension
PAP
Pulmonary artery pressure
Pap
papnicolaou smear
PARA I, PARA II
primipara, secundipara, etc. indicating a woman of so many children
PAWP
pulmonary artery wedge pressure
pc
after meals
P.C.S
premature contractions
PCN
penicillin
P.C.P
(angel dust) phynyleyelidine
PDA
patent ductus arteriousus
PE
pulmonary adema/pulmonary embolus
PED
pediatrics
PEEP
positive end-expiratory pressure
PERRLA
pupils equal, round, reactive to light and accommodation
P.F
plantar flexion
PFT
pulmonary function test
Pgx
prognosis
pH
hydrogen ion concentration