Dictionary of Medical Acronyms & Abbreviations

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[ O ]

O₀ | O₁ | O₂ | O₃

ODBC open database connectivity
ODC oritidine decarboxylase; ornithine decarboxylase; oxygen dissociation curve
Odc ornithine decarboxylase
ODCP ornithine decarboxylase pseudogene
ODD oculodentodigital [dysplasia]; oppositional defiant disorder; osteodental dysplasia
OD'd overdosed [drug]
ODE Office of Device Evaluation [of FDA]; ordinary differential equation
ODED oculo-digito-esophago-duodenal [syndrome]
ODES Oslo Diet and Exercise Study
ODFR oxygen-derived free radical
ODIF office document interchange format
ODISY Online Deaconess Information System
ODM ophthalmodynamometer, ophthalmodynamometry
ODN oligodeoxyribonucleotide
ODOD oculo-dento-osseous dysplasia
Odont odontogenic
ODP offspring of diabetic parents; open distributed processing; right occipitoposterior [fetal position, Lat. occipito-dextra posterior]
ODPHP Office of Disease Prevention and Health Promotion
ODQ on direct questioning
ODRV Odrenisrou virus
ODS organized delivery system; original dataset; osmotic demyelination syndrome
ODSG ophthalmic Doppler sonogram
ODT oculodynamic tract; right occipitotransverse [fetal position, Lat. occipito-dextra transversa]
ODTS organic dust toxic syndrome
ODU optical density unit
OE on examination; organization engine [database]; orthopedic examination; otitis externa; out-stationed enrollment
O/E observed/expected [ratio]
O&E observation and examination
Oe oersted
OEE osmotic erythrocyte enrichment; outer enamel epithelium
OEF oil immersion field; oxygen extraction fraction
O₂EI oxygen extraction index
OEIS omphalocele, exstrophy, imperforate anus, spinal defects [complex]
OEL occupational exposure limit
OELM optimal external laryngeal manipulation
OEM object exchange model; opposite ear masked; original electronic manufacturer
OEP operational effectiveness program
OEPA Onchocerciasis Elimination Program for the Americas
OER osmotic erythrocyte [enrichment]; oxygen enhancement ratio
O₂ER oxygen extraction ratio
OERP Office of Education and Regional Programming
OERR order entry and results reporting
OE/RR online physician's order entry and results reporting
OES oral esophageal stethoscope; optical emission spectroscopy
oesoph esophagus [oesophagus]
OET oral endotracheal tube; oral esophageal tube
O₂Ext oxygen extraction
OF occipitofrontal; opacity factor; open field [test]; optical fundus; orbital fracture; orbitofrontal; osmotic fragility; osteitis fibrosa; output factor; oxidation-fermentation
O/F oxidation-fermentation
OFA oncofetal antigen
OFAGE orthogonal field alternation gel electrophoresis
OFBM oxidation-fermentation basal medium
OFC occipitofrontal circumference; optical flow constraint [equation]; orbitofacial cleft; osteitis fibrosa cystica
OFCTAD occipito-facio-cervico-thoraco-abdomino-digital dysplasia
OFD object-film distance; occipital frontal diameter; oro-facial-digital [syndrome]
ofd object-film distance
Off official
OFHA occipitofrontal headache
OFI open and flexible learning
OFM orofacial malformation
OFNE oxygenated fluorocarbon emulsion [delivery system]
OFS optical file system
OFTT organic failure to thrive
OFUN organism function [UMLS]
OG obstetrics and gynecology; occlusogingival; 1-O-octyl-beta-D-glucopyranoside; oligodendrocyte; optic ganglion; orange green; orogastric; [protective] overgarment
O&G obstetrics and gynecology
OGC oculogyric crisis
OGD [o]esophago-gastro-duodenoscopy
OGDH oxoglutarate dehydrogenase
OGF ovarian growth factor; oxygen gain factor
OGH ovine growth hormone
OGI oxygen-glucose index
OGJ [o]esophagogastric junction
OGS oxygenic steroid
OGTT oral glucose tolerance test
OGZN organization [UMLS]
OH hydroxycorticosteroid; obstructive hypopnea; occipital horn; occupational health; occupational history; oligomer hybridization; open heart [surgery]; orthostatic hypotension; osteopathic hospital; out of hospital; outpatient hospital
17-OH 17-hydroxycorticosteroid
OHA oral hypoglycemic agents
OHAHA ophthalmoplegia-hypotonia-ataxia-hypacusis-athetosis [syndrome]
OHB₁₂ hydroxycobalamin
O₂Hb oxyhemoglobin
OHC occupational health center; outer hair cell; Oxford Haemophilia Centre
5-OHC 5-hydroxycysteine
OHCA out-of-hospital cardiac arrest
OH-Cbl hydroxycobalamin
OHCC hydroxycalciferol; out-of-home child care
OHCOB hydroxycobalamin
OHCS hydroxycorticosteroid
OHD hydroxylase deficiency; hydroxyvitamin D; Office of Human Development; Ondine-Hirschsprung disease; organic heart disease
1,25(OH)₂D₃ 1,25-dihydroxyvitamin D₃ [calcium transport]
25-OH-D 25-hydroxyvitamin D
OHDA hydroxydopamine
8-OH-dG 8-hydroxy-2´-deoxyguanosine
16-OH-DHAS 16-alpha-hydroxydehydroepiandrosterone sulfate
8-OH-DPAT 8-hydroxy-2-(di-n-propylamino)tetralin
OHDS Office of Human Development Services
OHE other hospital employee
OHF Omsk hemorrhagic fever
OHFA hydroxy fatty acid
OHFT overhead frame trapeze
OHFV Omsk hemorrhagic fever virus
OHI Occupational Health Institute; operative hypertension indicator; oral hygiene index; Oral Hygiene Instruction
OHIAA hydroxyindoleacetic acid
OHIPD Office of Health Information Programs Development
OHI-S Oral Hygiene Instruction-Simplified
OHL oral hairy leukoplakia
OHMO Office of Health Maintenance Organizations
OHN occupational health nurse; optical nerve head
OHP hydroxyprogesterone; hydroxyproline; occupational health plan; Oregon Health Plan; oxygen under high pressure
17-OHP 17-hydroxyprogesterone
OHPCC Office of High Performance Computing and Communications
OHR occupational health research; Office of Health Research
OHS obesity hypoventilation syndrome; occipital Horn syndrome; occupational health and safety; occupational health service; ocular histoplasmosis syndrome; open heart surgery; Oslo Hypertension Study; ovarian hyperstimulation syndrome
OHSD hydroxysteroid dehydrogenase
OHSR Office of Human Subject Research [NIH]
OHSS ovarian hyperstimulation syndrome
OHT ocular hypertension; orthotopic heart transplantation; Oslo Heart Trial
OHTA Office of Health Technology Assessment
5-OHU 5-hydroxyuracil
OI obturator internus; occasional insomnia; opportunistic infection; opsonic index; orgasmic impairment; orientation inventory; orthoiodohippurate; osteogenesis imperfecta; ouabain insensitivity; oxygen intake
O-I outer and inner
OIC organized indigenous caregiving; osteogenesis imperfecta congenita
OID object identifier; optimal immunomodulating dose; Organism Identification Number; oxygen insufflation device
OIF observed intrinsic frequency; oil immersion field; open internal fixation; Osteogenesis Imperfecta Foundation
OIG Office of the Inspector General
OIH Office of International Health; orthoiodohippurate; ovulation-inducing hormone
OILD occupational immunologic lung disease
oint ointment
OIP organizing interstitial pneumonia
OIR Office of Information Resources; Office of International Research
OIS object information system; organ injury scale; Oslo Ischemia Study; outpatient information system
OIT organic integrity test
OITAV Oita virus
OJ orange juice
OKC odontogenic keratocyst
OKHV Okhotskiy virus
OKN optokinetic nystagmus
OKOV Okola virus
OKR optokinetic response; Ottawa knee rules
OKS optokinetic stimulus
OKT ornithine ketoacid amino-transferase
O₀ | O₁ | O₂ | O₃

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