para
Number of pregnancies
Path
Pathology
Pb
Lead
PBI
Protein bound iodine
pc
After meals
PCA
Patient controlled analgesia
PCC
Poison control center
PCP
Patient care plan
PCT
Patient/personal care technician
PDR
Physician’s desk reference
PE
Physical exam, pulmonary edema
Peds
Pediatrics
per
By, through
PET
Position emission tomography
pH
Measure of acidity/alkalinity
Pharm
Pharmacy
PI
Present illness
PID
Pelvic inflammatory disease
PKU
Phenylketonuria
PM, pm
After noon
PMC
Post mortem (after death) care
PMS
Premenstrual syndrome
PNS
Peripheral nervous system
po
By mouth