Browse Medical Abbreviations
N
| N | normal; Nitrogen (element); nucleus |
| n | nerve |
| 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 |
| N/V/D | nausea, vomiting, diarrhea |
| NA | Nursing Assistant; nurse assistant; not applicable |
| Na | Sodium (element) |
| NAA | nucleic acid amplification |
| NABS | normal active bowel sounds |
| NaCl | Sodium Chloride |
| NAD | no apparent distress; no acute distress; no active disease; no abnormality detected; nicotinamide adenine dinucleotide |
| NAF | notice of adverse findings |
| NAFLD | non-alcoholic fatty liver disease |
| NAI | no action indicated |
| NaOH | sodium hydroxide |
| NASH | non-alcoholic steatohepatitis |
| NAT | non-accidental trauma; nucleic acid-based tests |
| NB | newborn |
| Nb | Niobium (element) |
| NBHS | newborn hearing screen |
| NBN | newborn |
| NBRT | National Board for Respiratory Therapy |
| NBTNF/M | newborn, term, normal, female/male |
| NC | nasal cannula |
| NCAT | normocephalic, atraumatic |
| NCHS | National Center for Health Statistics |
| NCI | National Cancer Institute |
| nCi | nanocurie |
| NCP | nursing care plan |
| NCPAP | nasal continuous positive airway pressure |
| NCS | nerve conduction study |
| ND | not diagnosed; normal delivery; nondistended; Doctor of Naturopathy; neck dissection |
| Nd | Neodymium (element) |
| NDA | non-disclosure agreement; next doctors appointment; new drug application |
| NDC | national drug code |
| NDF | no disease found |
| nDNA | native DNA |
| NDT | neurodevelopmental treatment |
| NE | not evaluated/not examined; norepinephrine; 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; neurofibromatosis |
| NF1 | neurofibromatosis type 1 |
| NFA | nursing facility administrator |
| NFP | natural family planning |
| NFTD | normal full term delivery |
| ng | nasogastric; nanogram (billionth of a gram) |
| NGF | nerve growth factor |
| NGR | nasogastric replacement |
| NGS | next generation sequencing |
| NGT | nasogastric tube |
| NGTD | no growth to date (culture status) |
| NGU | nongonococcal urethritis |
| NH | nursing home |
| NH3 | Ammonia |
| NHC | National Health Council |
| NHIC | National Health Information Center |
| NHL | non-Hodgkin's lymphoma |
| NHP | nursing home placement |
| NHS | National Health Service; normal human serum |
| NI | not indicated |
| Ni | Nickel (element) |
| NIBP | non-invasive blood pressure |
| NICE | National Institute for Health and Care Excellence |
| 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 Institutes of Health Stroke Scale |
| NIL | negative intraepithelial lesion |
| NIMH | National Institute of Mental Health |
| NINR | National Institute of Nursing Research |
| NIOSH | National Institute for Occupational Safety and Health |
| NIPVL | non-invasive peripheral vascular laboratory |
| NIV | non-invasive ventilation |
| NK | not known; natural killer |
| NKA | no known allergies |
| NKDA | no known drug allergies |
| NKFA | no known food allergies |
| NKHG | nonketotic hyperglycinemia |
| NL | normal |
| nL | nanoliter (billionth of a liter) |
| NLN | National League for Nursing |
| NLT | not less than |
| NM | non monitored; nodular melanoma; neuromuscular |
| nm | nanometer (billionth of a meter) |
| 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 |
| NO | nitric oxide |
| NO2 | nitrous oxide |
| noct | nocturnal, night |
| noct. | in the night (nocte) |
| NOE | naso-orbito-ethmoid |
| NOI | nature of illness |
| non rep | do not repeat |
| Norm | normal |
| NOS | not otherwise specified |
| NP | neuropsychiatric; Nurse Practitioner; nasopharyngeal |
| NP-CPAP | nasopharyngeal continuous positive airway pressure |
| NPA | nasopharyngeal airway |
| NPC | non-protein calories; nonproductive cough; no previous complaints; nasopharyngeal carcinoma |
| NPH | neutral protamine Hagedorn; no previous history; normal pressure hydrocephalus |
| NPN | nonprotein nitrogen |
| NPO | nothing by mouth (nil per os) |
| NPPV | noninvasive positive pressure ventilation |
| NPT | nocturnal penile tumescence; normal pressure and temperature |
| NPWT | negative pressure wound therapy |
| NQMI | non-Q wave myocardial infarction |
| NR | normal record; no record; non reactive |
| NRC | national research council; normal retinal correspondence |
| NRDS | neonatal respiratory distress syndrome |
| NREM | non-rapid eye movement |
| NRM | non-rebreathing mask |
| NRT | nicotine replacement therapy |
| NRTI | nucleoside reverse transcriptase inhibitors |
| NS | nervous system; neurological surgery; normal saline (0.9% sodium chloride); not significant |
| ns | nanosecond |
| 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 |
| nsec | nanosecond |
| Nsg | nursing |
| NSI | nasal saline irrigations |
| NSICU | neurosciences intensive care unit |
| NSR | normal sinus rhythm; nonsignificant risk |
| NSS | normal saline solution |
| NSSP | normal size, shape, position |
| NST | non-stress test |
| NSTEMI | non-ST elevation myocardial infarction |
| NSU | nonspecific urethritis; non-specific urethritis |
| NSV | non-specific vaginitis |
| NSVD | normal spontaneous vaginal delivery |
| NT | nuchal translucency; non-tender; nasotracheal |
| NT/ND | non-tender/non-distended |
| NTB | neuropsychological test battery |
| NTD | 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 | near vision |
| NVA | neurovascular assessment |
| NVD | nausea, vomiting, diarrhea; normal vaginal delivery |
| NVS | neurological vital signs |
| NVT | neurovascular and tendon |
| NWB | non weight bearing |
| NYD | not yet diagnosed |
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Abbreviations vary by context and institution. Many abbreviations have alternate or newer meanings not reflected in this set. The abbreviations on this page should not be considered complete.