PA
physician assistant
PAC
premature atrial contraction
PACS
picture archiving and communications system
PALS
pediatric advanced life support
Palp
palpitation
PAC
premature atrial contraction
PCN
penicillin
pCO2
partial pressure of carbon dioxide
PCOS
polycystic ovarian syndrome
PCP
primary care physician
PE
physical examination; pulmonary embolism
PEA
pulseless electrical activity
Peds
pediatrics
PEEP
positive and expiratory pressure
PEG tube
percutaneous endoscopic gastrostomy tube