Dictionary of Medical Acronyms & Abbreviations

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[ R ]

R₁ | R₂ | R₃ | R₄ | R₅ | R₆ |

rHuTNF recombinant human tumor-necrosis factor
RHV right hepatic vein
rHV recombinant hirudin variant
RI radiation intensity; radioactive isotope; radioimmunology; recession index; recombinant inbred [strain]; recurrent inhibition; refractive index; regenerative index; regional ileitis; regional information system; regular insulin; relative intensity; release inhibition; remission induction; renal index; renal insufficiency; replicative intermediate; resistive index; respiratory illness; respiratory index; response interval; reticulocyte index; retroactive inhibition; retroactive interference; ribosome; rosette index (or inhibition)
R_I intracellular resistivity
R_i internal resistivity
r_i intraclass correlation coefficient
RIA radioimmunoassay; reference information model; reversible ischemic attack
RIA-DA radioimmunoassay double antibody [test]
RIAS Roter Interactional Analysis System
Rib riboflavin; ribose
RIBA recombinant immunoblot assay
ribotyping ribonucleic acid [RNA]-typing
RIBS Rutherford ion backscattering
RIC right internal carotid [artery]; right interventricular coronary [artery]; Royal Institute of Chemistry
RICE replicating and integrating controlled expression [bacterial gene identification]; rest, ice, compression, and elevation
R_ICF intracellular fluid resistance
RICM right intercostal margin
RiCoF ristocetin cofactor
RICP recurrent intrahepatic cholestasis of pregnancy
RICU respiratory intensive care unit
RID radial immunodiffusion; reduced interference distribution; remission-inducing drug; ruptured intervertebral disc
RIDDOR Reporting of Injuries, Diseases, and Dangerous Occurrences Regulations [UK]
RIE reactive ion etching
RIF radiation-induced fibrosis; radiological interface; release-inhibiting factor; rifabutin; rifampin; right iliac fossa; rosette-inhibiting factor
RIFA radioiodinated fatty acid
RIFC rat intrinsic factor concentrate
RIFLE risk factor and life expectancy
rIFN recombinant interferon
RIFS remedial investigation/feasibility study
RIG rabies immune globulin; rat insuloma gene
RIGH rabies immune globulin, human
RIGHT [Ce]rivastatin Gemfibrozil Hyperlipidemia Treatment [study]
RIH right inguinal hernia
RIHD radiation-induced heart disease
RIHSA radioactive iodinated human serum albumin
RIKEN Institute of Physical and Clinical Research [database, Japan]
rIL recombinant interleukin
RILT rabbit ileal loop test
RIM radioisotope medicine; recurrent induced malaria; reference information model; relative-intensity measure
RIMA reverse inhibitor of monoamino oxidase A; right internal mammary artery
riMLF rostral interstitial median longitudinal fasciculus
RIMR Rockefeller Institute for Medical Research
RIMS resonance ionization mass spectrometry
RIN radiation-induced neoplasm; radioisotope nephrography; rat insulinoma
R_in input resistance
RINB Reitan-Indiana Neuropsychological Battery
RIND reversible ischemic neurologic deficit
RINN recommended international nonproprietary name
RIO right inferior oblique
RIOMV Rio Mamore virus
RIOSV Rio Secundo virus
RIP radioimmunoprecipitation; reflex inhibiting pattern; repeat-induced point [mutation]; respiratory inductance plethysmography
RIPA radioimmunoprecipitation assay
RIPH Royal Institute of Public Health
RIPHH Royal Institute of Public Health and Hygiene
RIPP resistive-intermittent positive pressure
RIPV right inferior pulmonary vein
RIR relative incidence rates; right interior rectus [muscle]
RIRB radioiodinated rose bengal
RIRL retrograde intrarenal lipotripsy
RIRS retrograde intrarenal surgery
RIS radiology information system; rapid immunofluorescence staining; relative intensity score; resonance ionization spectroscopy
R_is resistivity of the interstitium
r_is interstitial resistance
RISA radioactive iodinated serum albumin; radioimmunosorbent assay
RISC Radiology Information System Consortium; reduced instruction set chip [microprocessor]; reduced instruction set computing; Research Group on Instability in Coronary Artery Disease [study]
RISK Risk Intervention Skills Study
RIS/PACS radiological information system/picture archiving and communication system
RIST radioimmunosorbent test
RIT radioimmune trypsin; radioimmunotherapy; radioiodinated triolein; radioiodine treatment; rosette inhibition titer
RITA Randomised Intervention Treatment of Angina [UK]; right internal thoracic artery
RITC rhodamine isothiocyanate
RITED Italian Registry of Echo-Dobutamine [tests]
RIU radioactive iodine uptake; refractive index unit
RIV retinal image velocity
RIVC right inferior vena cava
RIVD ruptured intervertebral disc
RJA regurgitant jet area
RK rabbit kidney; radial keratotomy; reductase kinase; rhodopsin kinase; right kidney
R_k [heart function] restitution constant
RKG radiocardiogram
RKH Rokitansky-Küster-Hauser [syndrome]
RKM rokitamycin
RKV rabbit kidney vacuolating [virus]
RKY roentgen kymography
RL radial line; radiation laboratory; reduction level; relaxation labeling; renal dysplasia-limb defects [syndrome]; resistive load; reticular lamina; right lateral; right leg; right lung; Ringer's lactate [solution]; run length
R&L right and left
R_L lung resistance
RLA Ranchos de los Amigos [Cognitive Functioning Scale]; right lung apices
RLC residual lung capacity
RLD related living donor; ruptured lumbar disc
RLE right lower extremity
RLF retrolental fibroplasia; right lateral femoral
RLG regional librarians group
RLGS restriction landmark genomic scanning
rliPCR restriction cleavage, self-ligation, inverse polymerase chain reaction
RLIU regional library and information unit
RLL right lobe of liver; right lower limb; right lower lobe; run length limited
RLLS relative laser light scattering
RLM right lower medial
rLM recombinant Listeria monocytogenes
RLMA reinforced laryngeal mask airway
RLN recurrent laryngeal nerve; regional lymph node; relaxin
RLNC regional lymph node cell
RLND regional lymph node dissection
RLO residual lymphatic output
RLP radiation leukemia protection; ribosome-like particle
RLPV right lower pulmonary vein
RLQ right lower quadrant
RLR right lateral rectus [muscle]
RLS recursive least square; restless leg syndrome; Ringer lactate solution; Roussy-Levy syndrome; run-length statistics
RLSB right lower scapular border
R-Lsh right-left shunt
RLSL recursive least square lattice
RLT ralitoline
RLU relative light unit
RLV Rauscher leukemia virus
RLWD routine laboratory work done
RLX relaxin
RLXH relaxin H
RLZ right lower zone
RM mutant reverse; radical mastectomy; random migration; radon monitor; range of movement; red marrow; reference material; relative magnitude; relative mobility; rehabilitation medicine; reinforced maneuver; resistive movement; respiratory movement; respiratory muscle; restoration-maximization [algorithm]; Riehl melanosis; risk management; routine management; ruptured membranes
Rm relative mobility; remission
R_m membrane resistance
r_m membrane resistance per unit length
rm remission; room
1RM one-repetition maximum
RMA rapid membrane assay; refuses medical advice; Registered Medical Assistant; relative medullary area; right mentoanterior [fetal position]
RMANOVA repeated measures analysis of variance
RMAT rapid microagglutination test
Rmax maximum resistance
R_max maximum response
Rmax,L maximum resistance, lung
Rmax,w maximum resistance, chest wall
RMB right mainstem bronchus
RMBF regional myocardial blood flow
RMC reticular magnocellular [nucleus]; right middle cerebral [artery]; Rozsos microcholecystectomy
RMCA right middle cerebral artery
RMCH rod monochromacy or monochromatism
RMCL recommended maximum contaminant level; right midclavicular line
RMD retromanubrial dullness
RMDP Resource Mothers Development Project
RME rapid maxillary expansion; reasonable maximum exposure; receptor-mediated endocytosis; resting metabolic expenditure; right mediolateral episiotomy
RMEC regional medical education center
RMED rural medical education [program]
RMF recursive median filter; right middle finger
RMI recent myocardial infarction; remote method invocation; reticulocyte maturity index
R-MIM refined message information model
Rmin,L minimum resistance, lung
Rmin,rs minimum resistance, respiratory system
RMK rhesus monkey kidney
RML radiation myeloid leukemia; regional medical library; right mediolateral; right middle lobe
RMLB right middle lobe bronchus
RMLS right middle lobe syndrome
RMLV Rauscher murine leukemia virus
RMM rapid micromedia method
RMN Registered Mental Nurse
RMO Regional Medical Officer; Resident Medical Officer
RMP rapidly miscible pool; Regional Medical Program; regional myocardial infarction; resting membrane potential; ribulose monophosphate pathway; rifampin; right mentoposterior [fetal position]; risk management planning or program
RMPA Royal Medico-Psychological Association
RMR relative maximum respone; repair-misrepair model; resting metabolic rate; right medial rectus [muscle]
RMRS Regenstrief Medical Record System
RMS rectal morphine sulfate [suppository]; red man syndrome; repetitive motion syndrome; residual mean square; resource management system; respiratory muscle strength; rhabdomyosarcoma; rheumatic mitral stenosis; rhodomyosarcoma; rigid man syndrome; root-mean-square
rms root-mean-square
RMSA regulator of mitotic spindle assembly; rhabdomyosarcoma, alveolar
RMSa rhabdomyosarcoma
RMSCR rhabdomyosarcoma chromosomal region
RMSD root-mean-square deviation
RMSE, rmse root-mean-square error
RMSF Rocky Mountain spotted fever
RMSS Ruvalcaba-Myhre-Smith syndrome
RMSSD root mean square of successive differences
RMT Registered Music Therapist; relative medullary thickness; retromolar trigone; right mentotransverse [fetal position]
RMUI relief medication unit index
RMuLV Rauscher murine leukemia virus
RMV respiratory minute volume
RMZ right midzone
RN narrower semantic relationship [UMLS]; radionuclide; red nucleus; Registered Nurse; registry number; residual nitrogen; reticular nucleus
Rn radon
RNA radionuclide angiography; Registered Nurse Anesthetist; ribonucleic acid; rough, noncapsulated, avirulent [bacterial culture]
RNAA radiochemical neutron activation analysis
RNA-BP ribonucleic acid-binding protein
RNAi ribonucleic acid interference
RNAP ribonucleic acid polymerase
RNAse, RNase ribonuclease
RNase P ribonuclease P
RNasin ribonuclease inhibitor
RNC repressing nucleoprotein complexes
RN-C registered nurse-certification
RNCG relative negative charge
RNCM registered nurse case manager
RND radical neck dissection; radionuclide dacryography; reactive neurotic depression; respiratory nursing diagnosis
RNFL retinal nerve fiber layer
RNFP Registered Nurse Fellowship Program
RNGF rhodamine-nerve growth factor [conjugate]
RNI reactive nitrogen intermediate
RNIB Royal National Institute for the Blind
RNICU regional neonatal intensive care unit
RNID Royal National Institute for the Deaf