Browse Medical Abbreviations

n nerve
N Nitrogen (element); normal
N&V nausea and vomiting
n.b. note well
n.p.o. nothing by mouth (nil per os)
n.r. do not repeat
N/A not applicable
N/C nasal cannula; no complaints
N/V nausea/vomiting
Na Sodium (element)
NA nurse assistant; not applicable
NAA nucleic acid amplification
NABS normal active bowel sounds
NaCl Sodium Chloride
NAD no apparent distress; no acute distress; no active disease
NAF notice of adverse findings
NAI no action indicated
NaOH sodium hydroxide
NAT nucleic acid-based tests; non-accidental trauma
NB newborn
Nb Niobium (element)
NBHS newborn hearing screen
NBN newborn
NBTNF/M newborn, term, normal, female/male
NC nasal cannula
NCAT normocephalic, atraumatic
NCHS national center for health statistics
nCi nanocurie
NCI National Cancer Institute
NCP nursing care plan
NCPAP nasal continuous positive airway pressure
NCS nerve conduction study
ND neck dissection; nondistended
Nd Neodymium (element)
NDA non-disclosure agreement; next doctors appointment
NDC national drug code
nDNA native DNA
NE not evaluated/not examined; neurological examination
Ne Neon (element)
neb nebulizer
NEC necrotizing enterocolitis; not elsewhere classified
NED no evidence of disease
neg negative
NEL non-elective
nerv nervous
Neuro neurology
Neut neutrophil
NF national formulary
NFA nursing facility administrator
NFP natural family planning
NFTD normal full term delivery
ng nanogram (billionth of a gram); nasogastric
NGR nasogastric replacement
NGS next generation sequencing
NGT nasogastric tube
NGTD no growth to date (culture status)
NGU non-gonococcal urethritis
NH nursing home
NH3 Ammonia
NHIC national health information center
NHL non-Hodgkin's lymphoma
NHP nursing home placement
NHS normal human serum; National Health Service
Ni Nickel (element)
NI not indicated
NIBP non-invasive blood pressure
NICMP nonischemic cardiomyopathy
NICU neonatal intensive care unit
NIDDM non-insulin-dependent diabetes mellitus
NIF negative inspiratory force
NIH national institutes of health
NIHSS National Institute of Health Stroke Scale
NIL negative intraepithelial lesion
NINR national institute of nursing research
NIOSH national institute of occupational safety and health
NIPVL non-invasive peripheral vascular laboratory
NK natural killer; not known
NKA no known allergies
NKDA no known drug allergies
NKFA no known food allergies
NKHG nonketotic hyperglycinemia
nL nanoliter (billionth of a liter)
NL normal
NLN national league for nursing
NLT not less than
nm nanometer (billionth of a liter)
NM neuromuscular; non monitored
NMDA N-methyl D-aspartate
NMJ neuromuscular junction
nmol nanomole
NMR nuclear magnetic resonance
NMS neuroleptic malignant syndrome
NMT not more than
nn nerves
NNRTI non-nucleoside reverse transcriptase inhibitor
NNU neonatal unit
no number
noct nocturnal, night
noct. in the night (nocte)
NOE naso-orbito-ethmoid
non rep do not repeat
Norm normal
NOS not otherwise specified
NP nasopharyngeal; Nurse Practitioner
NP-CPAP nasopharyngeal continuous positive airway pressure
NPC non-protein calories; nonproductive cough; no previous complaints
NPH no previous history; neutral protamine Hagedorn
NPN nonprotein nitrogen
NPO nothing by mouth (nil per os)
npo/hs nothing per mouth (at night)
NPPV noninvasive positive pressure ventilation
NPT nocturnal penile tumescence
NPWT negative pressure wound therapy
NQMI non q wave myocardial infarction
NR no record; non reactive; normal record
NRC normal retinal correspondence
NRM non-rebreathing mask
NRT nicotine replacement therapy
NRTI nucleoside reverse transcriptase inhibitors
NS not significant; normal saline (0.9% sodium chloride); neurological surgery; nervous system
NSA no significant abnormality
NSAID nonsteroidal anti-inflammatory drug
NSC national safety council
NSCLC non-small cell lung cancer
NSD normal spontaneous (full term) delivery
Nsg nursing
NSI nasal saline irrigations
NSICU neurosciences intensive care unit
NSR nonsignificant risk; normal sinus rhythm
NSS normal saline solution
NSSP normal size, shape, position
NST non-stress test
NSTEMI non-ST elevation myocardial infarction
NSU non-specific urethritis
NSV non-specific vaginitis
NSVD normal spontaneous vaginal delivery
NT nasotracheal; non-tender
NT/ND non-tender/non-distended
NTB neural tube defect
NTG nitroglycerin
NTM non-tuberculosis mycobacteria
NTT nasotracheal tube
NUG necrotizing ulcerative gingivitis
nullip nullipara
NUP necrotizing ulcerative periodontitis
nutr nutrition; nutritionist
NV nausea and vomiting
nv visual acuity for near
NVA neurovascular assessment
NVD normal vaginal delivery; nausea, vomiting, diarrhea
NVT neurovascular and tendon
NWB non weight bearing
NYD not yet diagnosed