N & O &P &Q Abbreviations

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N
NAD	no active disease
NAS	no added salt
NCV	nerve conduction velocity
NED	no evidence of recurrent disease
ng	nanogram
NG	nasogastric
NIDDM	non-insulin dependent diabetes mellitus
NKA	no known allergies
NKDA	no known drug allergies
NMR	nuclear magnetic resonance
NPO	nothing by mouth
NRM	no regular medications
NSAID	non-steroidal anti- inflammatory drugs
NSR	normal sinus rhythm
NT	nasotracheal
O
OB	obstetrics
OCG	oral cholecystogram
OD	overdose or right eye
OM	otitis media
OOB	out of bed
OOP	out of plaster
OPV	oral polio vaccine
OR	operating room
OS	left eye
OU	both eyes
P
P	para
PA	posteroanterior
PAC	premature atrial contraction
PAO2	alveolar oxygen
PaO2	peripheral arterial oxygen content
PAP	pulmonary artery pressure
PAT	paroxysymal atrial tachycardia
P&PD	percussion and postural drainage
PC	after eating
PCWP	pulmonary capillary wedge pressure
PDA	patent ductus arteriosus
PDR	physicians desk reference
PE	pulmonary embolus, or physical exam or pleural effusion
PEEP	positive end expiratory pressure
PFT	pulmonary function tests
pg	picogram
PI	pulmonic insufficiency disease
PKU	phenylketonuria
PMH	previous medical history
PMI	point of maximal impulse
PMN	polymorphonuclear leukocyte (neutrophil)
PND	paroxysmal nocturnal dyspnea
PO	by mouth
POD	post-op day
PP	postprandial or pulsus paradoxus
PPD	purified protein derivative
PR	by rectum
PRBC	packed red blood cells
PRN	as needed
PS	pulmonic stenosis
PT	prothrombin time, or physical therapy
Pt	patient
PTCA	percutaneous transluminal coronary angioplasty
PTH	parathyroid hormone
PTHC	percutanous transhepatic cholangiogram
PTT	partial thromboplastin time
PUD	peptic ulcer disease
PVC	premature ventricular contraction
PVD	peripheral vascular disease
Q
q	every (e.g. q6h = every 6 hours)
qd	every day
qh	every hour
q4h, q6h....	every 4 hours, every 6 hours etc.
qid	four times a day
QNS	quantity not sufficient
qod	every other day
Qs/Qt	shunt fraction
Qt	total cardiac output