/P
Post, after
p
Pulse
P
Phosphorous
PA
Posteroanterior
P&A
Percussion and auscultation
PAC
Premature auricular contractions
PaO
Partial arterial oxygen tension
PAP
Pulmonary artery pressure
Pap
Papanicolaou smear
PARA 1 PARA 2
Primipara, secundipara, etc,, indication a women of so many children
PAWP
Pulmonary artery wedge pressure
pc
After meals
P.C.S
Premature contractions
PDA
Patent ductus arteriosus
PE
Pulmonary edema / pulmonary embolus
PED
Pediatrics
PEER
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
PI
Present illness
PID
Pelvic inflammatory disease