Medical Abbreviations (N, O, P)- Useful for Coding and Transcription

N&M, nerves and muscles.
N&T, nose and throat.
N&V, nausea and vomiting.
N, asparagine.
N, Nitrogen.
N, normal (concentration of solution).
N, regional lymph node metastasis.
N/A, not applicable.
N/C, nucleocytoplasmic area ratio.
N/T, numbness and tingling.
N/V, nausea and vomiting.
N/V/D/C, nausea/vomiting/diarrhea/constipation.
NA, no abnormalities.
NA, not admitted.
NA, not applicable.
NA, not available.
Na, sodium.
NAA, no apparent abnormalities.
NAACCR, North American Association of Central Cancer Registries.
NAAOP, National Association for the Advancement of Orthotics & Prosthetics.
NABCO, National Alliance of Breast Cancer Organizations.
NABS, normoactive bowel sounds.
NaC, Na channels.
NAC, N-acetyl-L-cysteine.
NAC, nascent polypeptide associated complex.
NAC, nitrogen assimilation control protein.
NAC, non-amyloid component (of Alzheimer's disease amyloid), alpha-synuclein.
Nac, nucleus accumbens.
NaCl, sodium chloride.
NAD, nicotinamide adenine dinucleotide.
NAD, no active disease.
NAD, no acute disease.
NAD, no acute distress.
NAD, no apparent distress.
NAD, nothing abnormal detected.
NADP, nicotinamide-adenine dinucleotide phosphate.
NADW, National Arthritis Data Workgroup.
NAI, no acute infection.
NAON, National Association of Orthopaedic Nurses.
NAOT, National Association of Orthopaedic Technologists.
NAPRA, National Association of Pharmacy Regulatory Authorities.
NAR, narcotic.
NAR, no action required.
NARD, National Association of Retail Druggists.
NARD, Netherlands Centre for Monitoring of Adverse Reactions to Drugs.
NARD, no apparent respiratory distress.
NARD, nominal absorbed radiation dose.
NAS, National Academy of Sciences.
NASH, nonalcoholic steatohepatitis.
NASPEM, North American Society for Pediatric Exercise Medicine.
NASS, North American Spine Society (also: AAOS Related Organizations).
NAT, nucleic acid amplification testing.
NATA, National Athletic Trainers Association.
NaTT, sodium tetrathionate.
NB, newborn.
NBI, no bone injury.
NBM, nothing by mouth.
NBP, non-invasive blood pressure.
NBS, normal breath sounds.
NC, no change.
NC, no complaint.
NC, non-contributory.
NC, nuclear cytoplasmic (ratio).
NC/AT, normocephalic/atraumatic.
NCBI, National Center for Biotechnology Information (US).
NCC, National Competition Council (AU).
NCC, National Consumer Council (UK).
NCC, National Coordinating Center.
NCCF, National Childhood Cancer Foundation (USA).
NCCI, National Consultative Committee on Immunization.
NCCI, nervi corpori cardiaci interni.
NCCI, noncardiac cerebral ischemia.
NCCLS, National Committee for Clinical Laboratory Standards.
NCD, not considered disabling.
NCEP, National Cholesterol Education Program.
NCHS, National Center for Health Statistics.
NCI, National Cancer Institute (USA).
NCNS, no complications, no sequelae.
NCO, no complaints offered.
NCPP, National Collaborative Perinatal Project.
NCR paper, no carbon required paper.
NCR, no cardiac resuscitation.
NCRA, National Cancer Registrars Association (USA).
NCS, nerve conduction studies.
NCV, nerve conduction velocities.
NCV, non-cholera vibrios.
NCV, nuclear coefficient of variance.
ND, non distended.
ND, nondisabling.
NDA, new drug application.
NDF, neutral detergent fiber.
NDSAC, National Drug Scheduling Advisory Committee (Canada).
NE, nerve ending.
NE, neurologic examination.
NEC, necrotizing enterocolitis.
NEC, Nursing Education Coalition.
NECCR, North of England Children's Cancer Research Unit.
NED, no effort detected.
NED, no evidence of disease.
NEFA, non-esterified fatty acids.
neg, negative.
NEJM, New England Journal of Medicine.
NEO, neostigmine.
NER, no evidence of recurrence.
NERD, no evidence of recurrent disease.
NETA, norethisterone acetate.
Neuro - neurology, neurological
NFR, not for resuscitation.
NFRA, National Fibromyalgia Research Association (US).
NFs, neurofilaments.
ng, nanogram (millimicron) - 0.000000001 gram.
NG, N-G, nasogastric.
NGO, Non-Governmental Organization.
NGT, nasogastric tube.
NGU, nongonococcal urethritis.
NH, natural health.
NH, neurologic history.
NH, neuropsychiatric hospital.
NH, nursing home
NHANES, II, Second National Health and Nutrition Examination Survey.
NHANES, National Health and Nutrition Examination Survey.
NHIS, National Health Interview Survey.
NHL, non Hodgkin's lymphoma.
NHSCR, National Health Service Central Registry (UK).
NIA, National Institute on Aging.
NIAMS, National Institute of Arthritis and Musculoskeletal and Skin Diseases (US).
NICU, neonatal intensive care unit.
NICU, neurointensive care unit.
NIDA, National Institute on Drug Abuse.
NIDDM, non insulin-dependent diabetes mellitus, type II.
NIDRR, National Institute on Disability and Rehabilitation Research.
NIF, negative inspiratory force.
NIH, National Institute of Health (US).
NII, neuronal intranuclear inclusion.
NIL, nothing.
NIMH, National Institute of Mental Health.
NIP, no infection present; no inflammation present.
NIPB, non-invasive blood pressure.
NIRS, Near Infrared Spectroscopy.
NIRVANA, NIR Vascular Advanced North American.
NISMAT, Nicholas Institute of Sports Medicine and Athletic Trauma.
NK, natural killer cells (large lymphocytes, part of the immune system).
NK, not known.
NKA, no known allergies.
NKCA, National Kidney Cancer Association (USA).
NKD, no known disease.
NKDA, no known drug allergies.
NKHS, non-ketotic hyperosmolar syndrome.
NL, normal limits.
NL, normal.
NLG, natural latex gloves.
NLG, nerve conduction velocities.
NLG, Nictitans lacrimal gland.
NLG, noreleagnine.
NLM, National Library of Medicine (part of NIH).
NLP, no light perception; normal light perception.
NLS, nuclear localization signal.
NLT, not lower than.
NM, neuromuscular.
NM, nodular melanoma.
NM, not measured.
NM, not mentioned.
NMA, neurogenic muscular atrophy.
NMBA, neuromuscular blocking agent.
NMdNM, N-methyl-1-deoxynojirimycin.
NMDP, National Marrow Donor Program.
NMJ, neuromuscular junction.
NMKI, Nordic Committee for Food Analysis.
NMR, nuclear magnetic resonance (scan).
NMS, neuroleptic malignant syndrome.
NMSC, non melanoma skin cancer.
NMSS, National Multiple Sclerosis Society.
NMT, not more than.
NMZL, nodal marginal zone b-cell lymphoma.
NN, neonatal; nerves; nurse notes.
NNFF, National Neurofibromatosis Foundation (USA).
NNP, 4-hydroxy-3.5-dinitrophenyl.
NNP, diabetic non-neuropathic.
NNP, neonatal nurse practitioners.
NNP, nerve net pulses.
NNP, N-nitroso-2-nitrophenacetin.
NNP, N-nitrosopiperidine.
NNP, N-nitrosopropranolol.
NNP, N-nitrosopyrrolidine.
NNP, non-histone nuclear proteins.
NNP, non-neoplastic pneumopathy.
NNP, nonneoplastic polyps.
NNP, non-pregnant normotensive women.
NNP, normal non-pregnant.
NNP, nose/nasopharynx.
NNP, sodium nitroprusside.
NNP-1, novel nuclear protein (HGMW-approved symbol D21S2056E).
NNPs, nerve net pulses.
NNR, not necessary to return.
NNT, number needed to treat.
NO, nitric oxide.
no, number.
NO2, nitrogen dioxide.
NOAEL, no observable adverse effect level.
NOC, night.
NOD, non-obese diabetic.
NOEL, no observable effect level.
NOF, National Osteoporosis Foundation.
NOF, neck of femur.
NOHA, Nominal Ocular Hazard Area.
NOK, next of kin.
NONAS, number of non-aligned proximal tooth surfaces.
non-IgSF, non-Ig superfamily.
NONMEM, nonlinear mixed effect model.
NOP, no ocular pain; not otherwise provided for.
NORD, National Organization for Rare Disorders (USA).
NOS, nitric oxide synthase.
NOS, no organisms seen.
NOS, not on staff;
NOS, not otherwise specified.
NotI, restriction enzyme from Nocardia otitidis-cavarium.
NOV, Nederlandse Orthopaedisch Vereniging (Dutch Orthopaedic Association).
NP, nasopharynx; neuropathology; not palpable.
NP, nonpreferring (alcohol).
NP, nurse practitioner.
NPC, nasopharyngeal carcinoma.
NPC, no previous complaint
NPCMD, p-nitrophenoxycarbonyl methyl disulfide.
NPD, no pathologic diagnosis.
NPDL, nodular poorly differentiated lymphocytes.
NPH, neutral protamine Hagedorn - an intermediate acting insulin.
NPH, no previous history.
NPI, National Program of Immunization.
NPI-NH, neuropsychiatric inventory/nursing home.
NPN, nonprotein nitrogen (BUN and creatinine).
nPNA, normalized protein nitrogen appearance rates.
NPO MN, nothing by mouth after midnight.
NPO, nil per os - nothing by mouth.
NPP, National Population Policy.
NPT, normal pressure and temperature.
NPV, negative predictive value.
NQMI, non-Q-wave myocardial infarction.
NQWMI, non-Q-wave myocardial infarction.
NR, nerve root.
NR, not recommended.
NR, not remarkable.
NRBC, nucleated red blood cells.
NRC, National Research Council.
NRCS, Natural Resources Conservation Service.
NRCT, National Registry of Childhood Tumors (UK) held by the CCRG at Oxford.
NRI, nerve root involvement or irritation.
NRL, natural rubber latex.
NRM, normal range of motion.
NRN, no return necessary.
NROM, normal range of motion.
NRT, nicotine replacement therapy.
NRTI, nucleoside analogue reverse transcriptase inhibitors.
NS, nephrotic syndrome.
NS, nerves; neurosurgery; no show, nonspecific.
NS, nonserrated cells (type of basal epidermal cells).
NS, normal saline (solution).
NS5A. nonstructural protein 5A.
NSA, no significant abnormalities.
NSAD, no sign of significant disease.
NSAID, non-steroidal anti-inflammatory drugs.
NSC, neurosecretory cells.
NSC, no significant change.
NSCIA, National Spinal Cord Injury Association.
NSCLC, non-small cell lung cancer.
NSD, no significant defect.
NSD, normal spontaneous delivery.
NSDD-38, National Security Decision Directive-38.
NSE, neuron-specific enolase - a neural marker.
NSE, non-specific esterase.
NSF, no significant findings.
NSG, nursing.
NSH, National Health Service (UK).
NSHD, nodular sclerosing Hodgkin's disease.
NSI, no sign of infection, inflammation.
NSM, neurosecretory material.
NSMI, National Sports Medicine Institute of the United Kingdom.
NSR, non significant result.
NSR, normal sinus rhythm.
NSS, normal saline solution; normal size and shape.
NSVD, normal spontaneous vaginal delivery.
NSX, N4-acetylsulfisoxazole.
NSx, neonatally splenectomized (animals).
NT, naso-tracheal; nerve treatment; normal temperature; no test, not tested.
NT, non tender.
NT, normal range.
nt, nucleotide.
NTD, neural tube defect.
NTG, nitroglycerine.
NTM, nontuberculous mycobacteria.
NTP, National Toxicology Program.
NTP, normal temperature and pressure.
NTS, nucleus tractus solitarius.
NUFIP, nuclear FMRP-interacting protein.
NV, nausea vomiting.
NV, neurovascular.
NVD, nausea, vomiting, diarrhea.
NVI, iris neovascularization.
NWB, non-weight bearing.
NWOTA, North West Orthopaedic Trainees Association
NXG, necrobiotic xanthogranuloma.
NYD, not yet diagnosed.
NYHA, New York Heart Association.

O&E, observation and examination
O&P, ova and parasite
O.&A., odontectomy and alveolectomy
O/E, on examination.
O:, objective.
O’p-DDD, mitotane.
O2, oxygen
OA, occiput posterior.
OA, osteoarthritis.
OAP, osteoarthropathy.
OARG, Osteoporosis and Arthritis Research Group.
OARS, Osteoarthritis Research Society.
OATA, Ohio Athletic Trainers Association.
OATS, osteochondral autograft transfer system.
OB, obstetrics.
OB/OJ ratio, overbite (OB) and horizontal overjet (OJ) ratio.
Ob-GYN, obstetrics and gynecology.
OBJ, object; objective.
OBL, oblique.
OBP, ova, blood and parasites.
OBS, observer.
OBS, obstetrics.
OBS, organic brain syndrome.
OC, obsessive/compulsive.
OC, on call
OC, oral contraceptive; office call.
OCC, occasionally.
OCC, occiput.
OCC, occupation.
OCD, obsessive-compulsive disorder.
OCD, osteochrondritis dissecans.
OCE, comprehensive exam.
OCE, observable cholinomimetic effects.
OCE, odd-carbon fatty acid enriched.
oCE, oligomeric carboxylesterases.
OCE, oral conjugated estrogens.
OCE, osteocartilaginous exostoses.
OCEs, Oct-containing composite elements.
OCF, occipital-frontal circumference.
OCG, oral cholecystogram.
OCP, oral contraceptive pills.
OCS, open canalicular system (about platelets).
OD, (oculus dexter) right eye.
OD, occupational disease.
OD, officer of the day.
OD, once daily.
OD, optic density.
OD, outer diameter.
OD, overdose.
ODA, on day of admission.
ODN, oligodeoxynucleotide.
ODS, Oswestry Disability Score.
OE, on examination; orthopedic examination; otitis externa
OECI, Organization of European Cancer Institutes.
OES, old English sheepdog.
OFFA, Orthopaedic Foundation for Animals.
OGE, U.S.Office of Government Ethics.
OGTT, oral glucose tolerance test.
OH, occupational history.
OHCS(17-), 17-hydroxcorticosteroids.
OHS, open heart surgery.
OIA, optical immunoassay.
OIF, Osteogenesis Imperfecta Foundation.
Oint, ointment.
OJ, isoleucyl-tRNA synthetase.
OJ, obstructive jaundice.
OJ, orange juice.
OJ, Orthodontist Judgment.
OJ, overjet (type of maloclusion).
OL, open label.
OLSNA, Orthopaedic Laser Society of North America.
OM, obtuse marginal artery.
OM, occupational medicine.
OM, osteopathic manipulation.
OM, otitis media.
OMCTS, octamethylcyclotetrasiloxane.
OMS, osteomyelosclerosis.
ON, optic neuritis.
ONC, oncology.
ONDCP, Office of National Drug Control Policy.
ONFH, osteonecrosis of the femoral head.
OO, osteoid osteoma.
OOB, out of bed.
OOH, out of hospital.
OOP, out of plaster.
OP, occiput posterior.
OP, operation.
OP, opponens pollicis.
OP, out patient.
OPC, oculopalatocerebral (syndrome).
OPC, outpatient clinic.
OPCA, olivopontocerebellar atrophy.
OPCD, olivopontocerebellar degeneration.
OPCOS, oligomenorrheic polycystic ovary syndrome.
OPD, obstetric prediabetic.
OPD, optical path difference.
OPD, otopalatodigital (syndrome).
OPD, outpatient department.
OPD, outpatient dispensary.
OPD, p-phetiylenediamine.
OpDent, operative dentistry.
OPDG, ocular plethysmodynamography.
OPG, ocular pneumoplethysmography.
opg, opening.
OPG, orthopantomograin.
OPG, osteoprotegerin.
OPG, oxypolygelatin.
OPH, obliterative pulmonary hypertension; ophthalmia.
OPH, Oph ophthalmology; ophthalmoscopy, ophthalmoscope.
OPHC, Office of Prepaid Health Care.
OphD, Doctor of Ophthalmology.
Ophth, ophthalmology.
OPI, obliteration prediction index.
OPI, oculoparalytic illusion; Omnibus Personality Inventory.
OPI, opiates.
OPI, osteoblastic proliferation index.
OPI, overproduction inhibition.
OPIDN, organophosphorus-induced delayed neuropathy.
OPK, optokinetic.
OPL, other party liability; outer plexiform layer; ovine placental lactogen.
OPLL, ossification of posterior longitudinal ligament.
OPM, occult primary malignancy; Office of Personnel Management; ophthalmoplegic migraine.
OPN, ophthalmic nurse; osteopontin.
OPO, Organ Procurement Organization.
opp, opposite.
OPP, opposite.
OPP, osmotic pressure of plasma; oxygen partial pressure.
OPPA, vincristine, procarbazine, prednisone, Adriamycin.
OPPG, oculopneumoplethysmography.
OPRD, opiate receptor delta.
OPRK, opiate receptor kappa.
OPRR, Office of Protection from Research Risks.
OPRT, orotate.. pbosphoribosyltransferase.
OPRTase, orotate phosphoribosyltransferase.
OPS, operations; optical position sensor; osteoporosis-pseudolipoma syndrome; outpatient service; outpatient surgery.
OPSA, ovarian papillary serous adenocarcinoma.
OpScan, optical scanning.
OPSI, overwhelming postsplenectomy infection.
OPSR, Office of Professional Standards Review.
opt, best (Lat. Optimus); optics, optician.
OPT, outpatient treatment.
OPT, outpatient; outpatient treatment.
OPTHD, optimal hemodialysis.
OPV, oral polio vaccine.
OPV, oral poliovirus vaccine.
OPWL, opiate withdrawal.
OR&F, open reduction and fixation; open reading frame.
OR, (o)estrogen receptor; odds ratio; oil retention (enema]; open reduction; operating room; optic radiation; oral rehydration; orosomucoid; orthopedic; orthopedic research.
OR, open reduction.
OR, operating room.
Or, orbitale.
OR, oriented.
O-R, oxidation-reduction.
OR, rate of outflow.
ORA, opiate receptor agonist.
ORA, Orthopaedic Rehabilitation Association (AAOS Specialty Societies).
ORALABX, oral antibiotics.
ORANS, Oak Ridge Analytical System.
ORBC, ox red blood cell.
ORBD-NRC, Osteoporosis and Related Bone Diseases - National Resource Center.
ORC, oculo-reno-cerebellar [syndrome].
Orcb, orchitis.
ORD, optical rotatory dispersion; oral radiation death.
ORDS, Office of Research, Demonstration, and Statistics.
ORE, oil retention enema.
OREF, Orthopaedic Research and Education Foundation.
ORF, open reading frame.
ORF, open reading frames.
Org, org, organic.
ORIF, open reduction with internal fixation (sample operative report).
OrJ, orange juice.
ORJF, open reduction jaw fracture.
ORL, otorhinolaryngology.
ORM, orosomucoid; other regulated material; oxygen ratio monitor.
ORMC, oxygen ratio monitor controller.
ORN, operating room nurse; orthopedic nurse.
Orn, ornithine.
ORNL, Oak Ridge National Laboratoiy.
ORO, oil red 0.
OROS, oral osmotic.
ORP, operating room personnel.
ORP, oxidation-reduction potential.
ORPM, orthorhythniic pacemaker.
ORS, olfactory reference syndrome.
ORS, oral rehydration solution.
ORS, oral surgery, oral surgeon.
ORS, Orthopaedic Research Society (also: AAOS Specialty Societies).
ORS, orthopedic surgeon, orthopedic surgery.
ORS, oxygen radical scavengers.
ORSA, osteoclast resorption stimulating activity.
ORS-ROC, Orthopedic Research Society, Republic of China.
ORT, object relations technique; operating room technician; oral rehydration therapy.
ORT, operating room technician.
orth, ortho orthopedics, orthopedic.
Ortho, ORTH, orthopedics.
ORV, Orthopaedic Research of Virginia.
ORW, Osler-Rendu-Weber (syndrome).
OS, (oculus sinister) left eye.
OS, bone.
Os, occipitosacral.
Os, occupational safety.
Os, office surgery.
Os, Omenn syndrome.
Os, opening snap.
Os, operating system.
Os, oral surgery.
OS, oral surgery.
Os, organ specific.
OS, oris, mouth or other opening.
Os, orthopedic surgeon, orthopedic surgery.
Os, Osgood-Schlatter [disease].
Os, osmium.
OS, osteogenic sarcoma (context bone tumors).
Os, osteogenic sarcoma.
Os, osteosarcoma.
Os, osteosclerosis.
Os, oubain sensitivity.
Os, overall survival.
OS, overall survival.
Os, oxygen saturation.
OS, ozone safe.
OSA, obstructive sleep apnea.
OSA, Office of Services to the Aging.
OSA, Optical Society of America.
OSA, ovarian sectional area.
OSAE, Orthopaedic Special Assessment Examination (for AAOS members: Medical Education Section).
OSAS, obstructive sleep apnea syndrome.
osc, oscillation.
OSCAR, on-line survey, certification and reporting system.
OSCC, oral squamous cell carcinoma.
OSCE, objective structured clinical examination.
OSF, organ system failure; osteoclast-stimulating factor; outer spiral fiber; overgrowth stimulating factor.
OSH, Act Occupational Safety and Health Act of 1970.
OSHA, Occupational Safety and Health Adminstration.
OSI, open systems interconnection [reference model].
osm, osmole; osmosis, osmotic.
OSM, ovine submaxillary mucin; oxygen saturation meter.
Osm/kg, osmoles per kilogram.
Osm/l, osmoles per liter.
OSMED, otospondylometaphyseal dysplasia.
osmol, osmole.
OSR, oilseed rape.
OSRD, Office of Scientific Research and Development.
oss, osseous.
OSS, over-the-shoulder strap.
OST, object sorting test; Office of Science and Technology.
osteo, osteoarthritis; osteomyelitis; osteopathy.
OSTOP, Osteoporosis Society of British Columbia.
OSUK, Ophthalmological Society of the United Kingdom.
OSV, Orbis Sigma Valves Type I.
OT, objective test; oblique talus; occlusion time; occupational therapist, occupational therapy; ocular tension; office therapy; old term (in anatomy).
OT, objective test; occupational therapy.
OT, occupational therapy, old tuberculin.
OT, old tuberculin (Koch's old tuberculin) or Koch's original tuberculin.
OT, olfactory threshold; optic tract; orientation test ; original tuberculin; ornithine transcarbamylase; orotracheal; orthopedic treatment; otolaryngology; otology; oxytocin; oxytryptamine.
Ot, otolaryngology.
OTA, occupational therapy assistant.
OTA, Office of Technology Assessment.
OTA, ornithine transaminase.
OTA, Orthopaedic Trauma Association (Newsletter) (also: AAOS Specialty Societies).
OTA, orthotoluidine arsenite.
OTC, over the counter (a drug that can be obtained without a prescription).
OTM, os tibiale mediale.
Oto, otology.
OTRPC, osm TRPC.
OU, (oculus uterqie) each eye.
OV, office visit.
OWL, Orthopaedic Web Links.
OXT, oxytocin.
oz, ounce.

2PD, two point discrimination.
6-PGD, 6-phosphogluconate dehydrogenase.
P&A, percussion and auscultation
P&S, permanent and stationary
P(a-ET)CO2, arterial-end tidal PCO2 difference (should be less than 7 mmHg).
p(with line over it), after, post.
p, pathological.
P, periarteriolar lymphocyte sheath (about spleen).
P, phosphorus, pressure, pulse, para.
P, product.
P, proline.
p.r.n., pro re nata (as needed).
P:, plan.
P02, pressure of oxygen
p24, viral protein specific to HIV virus.
p53, a tumor suppressor gene.
PA(S)P, pulmonary artery (systolic) pressure.
PA, pernicious anemia.
PA, phagocytic activity.
PA, physician assistant.
PA, polyactive.
PA, posteroanterior (view in X-rays).
PA, pulmonary artery.
PAB, PBS/bovine serum albumin/azide buffer.
PAC, porous apatite ceramics.
PAC, premature atrial contraction.
PACAP, Pituitary adenylate-cyclase-activating polypeptide.
PaCO2 (kPa), carbon dioxyde partial pressure in arterial blood.
PaCO2, partial pressure of carbon dioxide in arterial blood.
PACU, post anesthesia care unit.
PAD, palmar adductors.
PAD, peripheral arterial disease.
PAD, peripheral arteriosclerotic disease.
PAD, preliminary anatomic diagnosis.
PADP, pulmonary artery diastolic pressure.
PAEDP, pulmonary artery end-diastolic pressure (normal range 4-13 mmHg).
PAF, platelet-activating factor.
PAHO, Pan American Health Organization.
PAI, physical activity index.
PAL, posterior axillary line.
PALS, pediatric advanced life support (training course).
PALS, periarteriolar lymphocyte sheath.
PAM, Potential Acuity Meter.
PAN, polyarteritis nodosa.
p-ANCA, perinuclear antineutrophil cytoplasmic antibodies.
PAO, periarticular ossification.
PaO2, partial pressure of oxygen in arterial blood.
PAOD, peripheral arterial occlusive disease.
PAOP, pulmonary artery occluded pressure.
PAOP, pulmonary artery occlusive pressure (a.k.a.PCWP).
Pap, Papanicolaou smear.
PAP, peroxidase antiperoxidase.
PAP, prostatic acid phosphatase.
PAP, pulmonary artery pressure (normal mean 9-19 mmHg) .
para, number of pregnancies.
pares., paresthesias.
PARP, poly (ADP-ribose) polymerase.
PARQ, Parent-Adolescent Relationship Questionnaire.
PARQ, Parental Acceptance/Rejection Questionnaire.
PARQ, Physical Activity Readiness Questionnaire.
PARQ, physical activity recall questionnaire.
PASG, pneumatic anti-shock garment.
PASI, psoriasis area and severity index (scoring of erythema, induration, scaling and involved area).
PAT, paroxysmal atrial tachycardia.
Path, pathology.
PB, phenobarbital.
PBB, polybrominated biphenyls (intoxication cause disorders of immune function).
PBC, primary biliary cirrhosis.
PBD, Pick body dementia.
PBI, protein bound iodine.
PBL, primary brain lymphoma.
PBL, problem-based learning.
PBMC, peripheral blood mononuclear cells.
PBN, phenyl-N-tert-butyl nitrone.
pBNP, porcine brain natriuretic peptide.
PBO, placebo.
PBOSRF, Palm Beach Orthopaedic and Spinal Research Foundation.
PBPC, peripheral blood progenitor cells.
PBPs, Penicillin-binding Proteins.
PBS, phosphate buffered saline.
PBS, postprandial bood sugar.
PBSC, peripheral blood stem cell.
pc, after meals.
PC, personal computer.
PC, pheochromocytoma.
PC, phone call.
PC, plasma cells.
pc, post cenam, after meals.
PC, posterior cervical.
PC, present complaint.
PCA, patient controlled analgesia.
PCB, polychlorinated biphenyls, toxic used in manufacture of electrical transformers.
PCB, production cell bank.
PCBA, printed circuit board assembled.
PCC, primary cell culture.
PCCE, pseudostratified ciliated columnar epithelium.
PCD, programmed cell death.
PCF, posterior cervical fusion.
PCG, pancreatico-cholangiography.
PCG, paracervical ganglion.
PCG, phonocardiogram.
PCG, preventive care group.
PCG, primate chorionic gonadotropin.
PCG, pubococcygeus.
PCH, paroxysmal cold hemoglobinuria.
PCIOL, posterior chamber intraocular lens.
PCKD, all parameters rechecked.
PCKD, polycystic kidney disease.
PCL, posterior cruciate ligament.
PCL, primary cerebral lymphoma.
PCL, primary cutaneous lymphoma.
PCLI, bone marrow plasma cell labeling index.
PCN, penicillin.
PCNA, proliferating cell nuclear antigen.
PCNSL, primary central nervous system lymphoma.
PCO, polycystic ovaries.
PCO2, partial pressure of carbon dioxide.
PCOD, polycystic ovarian disease.
PCP, phencyclidine.
PCP, Pneumocystis carinii pneumonia.
PCP, primary care physician.
PCR, polymerase chain reaction.
PCT, procalcitonin.
PCT, proximal convoluted tubule.
PCU, Policy Coordination Unit.
PCV, packed cell volume (hematocrit).
PCWP, pulmonary capillary wedge pressure; normal range: 5 to 12 mmHg.
PD, Paget disease.
PD, partial denture.
PD, per diem.
PD, perinatal death.
PD, peritoneal dialysis.
PD, presenile dementia (Alzheimer).
PD, progressive disease.
PD, pulmonary disease.
PD50, protective dose 50 %.
PDA, patent ductus arteriosus.
PDA, posterior descending artery.
PDAg, Pennsylvania Department of Agriculture.
PDAT, pre-senile dementia of Alzheimer type.
PDE, phosphodiesterase.
PDGF, platelet derived growth factor.
PDH, pigment-dispersing hormone.
PDLLA, poly D,L-lactic acid.
PDLL-D, diffuse poorly-differentiated lymphocytic lymphomas.
PDLL-N, nodular poorly-differentiated lymphocytic lymphomas.
PDMS, polydimethylsiloxane.
PDOH, Pennsylvania Department of Health.
PDPC, poorly differentiated papillary carcinomas of papillary thyroid carcinomas.
PDQ, Physician's Data Query (CancerNet).
PDR, Physician's Desk Reference.
PDS, polydioxanone.
PDS, poly-p-dioxanone or polydioxanone suture (commercial synthetic absorbable suture).
PDS, Progressive Deterioration Scale.
PDT, photodynamic therapy.
PDTC, pyrrolidine dithiocarbamate.
PE, phycoerythrin (fluorescent dye used in flow cytometry).
PE, physical examination.
PE, pleural effusion.
PE, point of entry.
PE, polyethylene.
PE, pulmonary edema.
PE, pulmonary embolism.
PEB, cisplatin, etoposide and bleomycin.
PEC, peritoneal exudate cells.
PEC, Petri Enteropathogen Count (plate).
PECAM-1, platelet endothelial cell adhesion molecule (CD-31).
Peds, Pediatrics.
PEEK, polyetheretherketone.
PEEP, positive end-expiratory pressure.
PEFR, peak expiratory flow rate.
PEG, percutaneous endoscopic gastrostomy.
PEG, pneumoencephalogram.
PEL, primary effusion lymphoma.
PEM, protein-energy malnutrition.
PEP A, peptidase A isozyme.
PEP B, peptidase B isozyme.
PEP C, peptidase C isozyme.
PEP D, peptidase D isozyme.
pep M24, pepsin extract of type-24 M protein.
PEP S, peptidase S isozyme.
PEP, phosphoenol-pyruvate.
PEP, postexposure prophylaxis.
PEP, primer-extension preamplification.
PEP/ET, preejection to ejection time.
PEPEC, pig enteropathogenic E.coli.
PEPP, Payment Error Prevention Program.
PER OS, by mouth
per, by.
per/os, by mouth.
PerCP, peridinin chlorophyll A protein (fluorescent dye used in flow cytometry).
Peri, around or about (e.g. perirenal = around the kidney).
Peri, perineal.
PERLA, pupils equal, reactive to light & accommodation.
PERRL, pupils equally round and reactive to light.
PERRLA, pupils equally round and reactive to light and accommodation.
PES, prenatal environmental stress.
PET, positron emission tomography.
PET, psychosocially enhanced treatment program.
PETE, polytetrafluoroethylene.
PF, Purkinje fibers.
PF4, platelet factor 4.
PFCx, prefrontal cortex.
PFFD, proximal femoral focal deficiency (virtual support group).
PFJ, patellofemoral joint.
PFO, patent foramen ovale.
PFOLA, Prescription Foot Orthotic Laboratory Association.
PFPS, patellofemoral pain syndrom.
PFS, progression free survival.
PFT, pulmonary function tests.
PG, phosphate yeast glucose (a broth used in microbiology).
pg, picogram - 0.000000000001 gram.
PG, proteoglycan.
PG, pseudogout (chondrocalcinosis).
PGA, polyglycolic acid.
PGC, pregastricin; primordial germ cell.
PGD,6-, 6-phosphogluconate dehydrogenase.
PGD2, endoperoxide-D-isomerase.
PGE, prostaglandin E.
PGE1, Prostaglandin E1.
PGE2, endoperoxide-E-isomerase.
PGF, paternal grandfather.
PGF2, endoperoxide-F-isomerase.
PGH, pituitary growth hormone.
PGI2, prostacyclin.
PGL, persistent generalized lymphadenopathy.
PGP, progressive general paralysis.
PGR, progesterone receptor.
pH, hydrogen-ion concentration - acid / alkaline
PH, past history.
PH, plasmactytic hyperplasia.
Ph1, Philadelphia chromosome.
PHA, phytohemagglutinin.
PhD, Doctor in Philosophy.
Phe, phenylalanine.
PHI, peptide histidine isoleucine.
Photo DSC, photo differential scanning calorimeter.
PHPT, primary hyperparathyroidism.
PHS, phenytoin hypersensitivity syndrome
PHSC, pluripotential hematopoietic stem cell.
PHTLS, prehospital trauma life support.
PHX, past history.
PHYSO, physostigmine.
PI, permanently implantable.
PI, personal injury.
PI, positive indices.
PI, present illness.
PI, protease inhibitor.
PIA, performance incentive award.
PIA, posterior interosseous artery.
PIBIDS syndrome, photosensitivity, ichthyosis, brittle hair, impaired intelligence, decreased fertility, and short stature.
PIC, peripherally inserted catheter.
PIC, products of incomplete combustion.
PICA, postero-inferior cerebellar artery.
PICC, peripherally inserted central catheter.
PID, pelvic inflammatory disease (CDC documentation).
PiD, Pick’s disease.
PID, prolapsed intervertebral disc.
PIE, Practical Incidence Estimators.
PIE, Problem-Intervention-Evaluation (system).
PIE, pulmonary infiltration with eosinophilia.
PIG-A, phosphatidylinositol glycan-class A (gene).
PIG-A, phosphatydilinositolglycan A.
PIH, pregnancy-induced hypertension.
PIH, pyridoxal isonicotinoyl hydrazone.
PIL, peripheral intravenous line.
PIM, pre-installation maintenance.
PIN, posterior interosseous nerve.
PIP, proximal interpalangeal.
PIP, proximal interphalangeal joint.
PIP2, phosphatidylinositol-4,5-biphosphate.
PIPC, piperacillin.
PIPJ, proximal interpalangeal joint.
PIV, peripheral intravenous (line).
PK, pain killer.
PKU, phenylketonuria.
PL, posterolateral.
PLA, phospholipases.
PLA, polylactic acid.
PLAP, placental alkaline phosphatase.
PLF, posterior lumbar fusion.
PLGA, polylactic/glycolic acid.
PLIF, posterolateral interbody fusion.
PLL, prolymphocytic leukemia.
PLNs, peripheral lymph nodes.
PLO-SL, polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy (Nasu-Hakola syndrome).
PLR, pupillary light reflex.
plt, paucity of lymph node T cell mutation.
PLT, platelet.
PLT, post-liver transplantation.
PLT, primary lymphoplasmacytic lymphoma.
PLT, primed lymphocyte tests.
PLT, psittacosis-lymphogranuloma-trachoma group viruses.
PM&R, Physical Medicine and Rehabilitation.
PM, petit mal.
PM, polymyositis.
PM, post meridian (afternoon).
PM, postmitotic cells.
PM, postmortem.
PM, post-nasal.
PMA, positive mental attitude; progressive muscular atrophy
PMB, postmenopausal bleeding.
PMBL, primary mediastinal B-cell lymphoma.
PMD, private medical doctor
PMH, past medical history.
PMI, maxillary primary incisors.
pMI, mitotic index of proliferating cell population.
PMI, pacemaker implantation.
PMI, pain management index.
PMI, Pain Management Inventory.
PMI, painless myocardial infarction.
PMI, panoramic mandibular index.
PMI, past medical illness.
PMI, paternal meiosis I.
PMI, perioperative myocardial infarction.
PMI, phosphomannose isomerase.
PMI, placental membrane inflammation.
PMI, plasma membrane integrity.
PMI, point of maximum impact
PMI, pollen mitosis one.
PMI, posterior myocardial infarctions.
PMI, postmortem interval.
PMI, power motion imaging.
PMI, Pressure Management Indicator.
PMI, Prevention Marketing Initiative.
pMI, previous myocardial infarction.
PMI, prolonged mechanical inspiration.
PMI, prostate malignancy index.
PMI, psoas minor muscle.
PMII, paternal meiosis II.
PMK, primary monkey kidney.
PML, promyelocytic leukemia and its gene on chromosome 15 (previously named myl).
PMMA, polymethylmethacrylate.
PMN, polymorphonuclear leukocytes.
PMP, previous menstrual period.
PMP22, Peripheral myelin protein 22.
PMR, protonic magnetic resonance (analysis).
PMR, psychomotor retardation.
PMS, premenstrual tension syndrome (late luteal phase dysphoric disorder).
PN, pain.
PNA, protein equivalent of total nitrogen appearance.
PNC, postnecrotic liver cirrhosis.
PNC, prenatal care.
PND, paroxysmal nocturnal dyspnea.
PND, postnatal day.
PNET, primitive neuroectodermal tumor.
PNF, proprioceptive neuromuscular facilitation.
PNH, paroxysmal nocturnal hemoglobinuria.
PNI, peripheral nerve injury
PNMT, phenylethanolamine-N-methyl-transferase.
PNP, pooled normal plasma.
PNS, peripheral nervous system.
PO sus rel, PO (by mouth) sustained release.
PO, (per os) orally, by mouth.
PO, post-operative.
PO, postovulatory.
PO2, Partial pressure of oxygen
POC, point-of-care.
POC, products of conception.
POD, postoperative day.
POD, postovulatory day.
POEMS (syndrome), polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin lesions.
POG, Pediatric Oncology Group (USA).
poly, prefix for multiple.
polys, polymorphonuclear cells.
PONF, Paediatric Oncology Nurses Forum (UK).
POP, plaster of paris.
Pop, popliteus tendon.
POS, Piedmont Orthopaedic Society.
pos, positive.
POSI, Paediatric Orthopaedic Society of India.
POSNA, Pediatric Orthopaedic Society of North America (AAOS Specialty Societies).
poss., possible.
post, posterior.
post-op, post-operative(ly).
postop, postoperative.
POTS, postural orthostatic tachycardia syndrome.
POX, point of exit
POX, pulse oximetry.
PP&A, palpation, percussion and auscultation
PP, per protocol.
PP, Peyer's patches.
PP, phosphoprotein phosphatase.
PP, positive pressure.
pp, postpartum.
pp, postprandial.
PP, presenting problem.
PP, private physician.
PPA, primary progressive aphasia.
PPARalpha, peroxisome proliferator activated receptor-alpha.
PPD, packs per day.
PPD, permanent partial disability.
PPD, purified protein derivative (of tuberculin).
PPE, personal protective equipment.
PPG, peristomal pyoderma gangrenosum.
PPG, portosystemic pressure gradient.
PPH, past pertinent history.
PPH, post-partum hemorrhage
PPH, primary pulmonary hypertension.
PPHN, persistent pulmonary hypertension of the newborn.
PPLO, pleuropneumonia-like organisms.
ppm, parts per million.
PPMC, physician practice management companies.
PPMS, primary progressive multiple sclerosis.
PPND, pallido-ponto-nigral degeneration.
PPP, pregnancy-prevention program.
PPPE, persistent pigmented purpuric eruption.
PPS, pachyman polysaccharides.
PPS, pelvic pain syndrome.
PPS, pentosan polysulfate.
PPS, peripheral pulmonic stenosis.
PPs, peroxisome proliferators.
PPS, Personal Preference Scale.
PPs, Peyer's patches.
pps, phosphoenolpyruvate synthase gene.
PPs, phosphoprotein phosphatases.
PPS, physician, patient and society.
PPS, plasminogen-plasmin system.
PPS, polyvalent pneumococcal polysaccharide.
PPS, poor progesterone surge (cycles).
PPS, popliteal pterygium syndrome.
PPS, postpartum psychiatric syndromes.
PPS, postpartum sterilization.
PPS, postperfusion syndrome.
PPS, postpericardiotomy syndrome.
PPS, post-polio syndrome.
PPS, postpump syndrome.
PPS, potentiating paired stimulation.
PPS, prenatal psychological stress.
PPS, preputial separation.
PPS, primary acquired preleukemic syndrome.
PPS, professional practice standards.
PPS, prospective payment system.
PPS, prospective pricing system.
PPS, protein plasma substitute.
PPS, pulse per second.
PPS/PCO, pelvic pain syndrome/polycystic ovaries
PPSH, pseudovaginal perineoscrotal hypopospadias.
P-PST-1, phenol-sulfating form of sulfotransferases.
ppt, part per trillion.
PPT, Physical Performance Test.
PPT, plasma pregnancy test.
PPT, postpartum thyroiditis.
PPT-B, Preprotachykinin B.
PPV, positive predicitive value.
PR, partial response / partial remission.
PR, progress record.
PR, pulse rate.
PR3, proteinase 3.
PRA, plasma/peripheral renin activity.
PRAMS, Pregnancy Risk Assessment Monitoring System.
PRAS, prereduced anaerobically sterilized (media).
PRBC, packed red blood cells.
PRC, proximal row carpectomy.
PRCA, pure red cell aplasia.
PRE, progressive resistance exercises.
pre-op, pre-operative(ly).
preop, preoperative.
prep, prepare as.
Pri, isopropanol.
PRIME-MD, Primary Care Evaluation of Mental Disorders.
prn, pro re nata - as required, as needed.
Pro time, prothrombin time.
Pro, proline.
PROM, passive range of motion.
PROM, premature rupture of membranes.
ProMACE-CytaBOM, prednisone, methotrexate, doxorubicin, cyclophosphamide, etoposide, cytarabine, bleomycin, vincristine, methotrexate.
prot, protocol.
PRP, penicillase-resistant penicillin.
PRP, pityriasis rubra pilaris.
PrP, prion protein.
PRRE, pupils round, regular and equal.
Prss14, protease, serine, 14, a gene.
PRT, patient refused test.
PRUJ, proximal radioulnar joint.
PRUL, proximal radioulnar ligament.
PS, parasegment.
PS, paraspinous.
PS, physical status.
PS, present symptoms.
PSA, prostate-specific antigen.
PSC, primary sclerosing cholangitis.
PSCR, peripheral stem cell rescue.
PSCT, peripheral stem cell transplant.
PSD, passive sampling devices.
PSEF, Plastic Surgery Educational Foundation.
P-selectin (GMP140), adhesion molecule on endothelial cells and platelets.
PSF, peak scatter factor.
PSF, posterior spinal fusion.
PSF, post-sophomore fellow.
PSG, progressive subcortical gliosis.
PSGN, post streptococcal glomerulonephritis.
psi, pounds per square inch.
PSIS, posterior superior iliac spine.
PSP, phenylsulfonphthalein test.
PSP, posterior spinous process.
PSS, Perceived Stress Scale.
PSSV, pre-study site visit.
PST, palmar skin temperature.
PST, paroxysmal supraventricular tachycardia.
Pst, phosphate-specific transporter.
pST, porcine somatotropin
PST, problem-solving therapy
PST, proximal straight tubule.
PST, proximal straight tubules
PST, pulse separation time
PSTH, poststimulus time histograms.
PSTT, placental site trophoblastic tumor.
PSUR, periodic safety update report.
PSVT, paroxysmal supraventricular tachycardia.
PsyD, Doctor in Psychiatry.
PT, patient.
PT, permanent and total.
PT, physical therapy.
PT, pneumothorax.
PT, prothrombin time.
pt., patient, pint.
PTA Medication, prior to admission medication.
PTA, percutaneous transluminal angioplasty.
PTA, phosphotungstic acid.
PTA, prior to admission/arrival.
PTAH, phosphotungstic acid hematoxylin.
PTC, percutaneous transhepatic cholangiography.
PTCA, percutaneous transluminal coronary angioplasty.
PTD, permanent total disability.
PTFE, polytetrafluoroethylene.
PTH, parathyroid hormone.
PTHc, C-terminal parathyroid hormone.
PTHC, percutaneous transhepatic cholangiography.
PTHC, posttransfusion hepatitis C.
PTHrP, parathyroid hormone-related peptide.
PTK, protein tyrosine kinases.
PTLD, post-transplant lymphoproliferative disorder.
PTMR, percutaneous transmyocardial revascularization.
PTO, portal triad occlusion.
PTP, Professional Team Physicians.
PTR, patellar tendon reflex
PTSD, Post-Traumatic Stress Disorder (National Center for PTSD).
PTT, partial thromboplastin time.
PTU, propylthiourcil (antithyroid drug).
PTX, pneumothorax.
PU, polyurethane.
PU, pregnancy urine.
PUCP, maximum urethral closure pressure.
PUD, peptic ulcer disease.
PUD, peri-urethral diathermy (associated with superficial bladder cancer).
PUD, pulmonary disease.
PUFA, polyunsaturated fatty acids.
pulv, powder.
Pulv, pulvinar.
PuLv, ventral part of the lateral pulvinar.
Pulv-LP, pulvinar-posterior-lateral complex.
PuM, medial pulvinar.
PUPPP, pruritic urticarial papules and plaques of pregnancy.
PV bleed, per vagina bleed.
PV, paravertebral.
PV, polycythemia vera.
PVA, polyvinyl alcohol fixative.
PVB, paravertebral block.
PVB, premature ventricular beat.
PVB19, parvovirus B19.
PVC, premature ventricular contraction.
PVC, pulmonary venous congestion.
PVD, peripheral vascular disease.
PVD, pre-senile vascular dementia.
PVNS, pigmented villonodular synovitis.
PvO2, mixed venous oxygen tension.
PVR, post-void residual.
PVR, pulmonary vascular resistance.
PVR, pulse volume recorder.
PVST, paraventriculospinal tract.
PVST, paroxysmal supraventricular tachycardia.
PVT, paroxysmal ventricular tachycardia.
PVT, peripheral vein thrombophlebitis.
PVT, periprostatic vein thrombosis.
PVT, polymorphic ventricular tachycardia.
PVT, popliteal vein transplant.
PVT, portal vein thrombosis.
pvt-1, plasmacytoma variant translocation-1 gene (on chromosome 15).
PWB, partial weight bearing.
PWP, pulmonary wedge pressure.
PWS, Prader-Willi syndrome.
PX, papular xanthoma.
PX, physical examination.
PX, prescription.
PX, prognosis.
PXE, pseudoxanthoma elasticum.PZI, protamine zinc insulin - a long acting insulin.