(363 abbrevations)

R, rectal.

R, residual tumor after treatment.

R, respiration (also resp).

R, right.

R, roentgen.

R.D., registered dietician.

R.P.R., rpr, rapid plasma reagin.

R.R., recovery room.

R/O, rule out.

R/s, roentgens per second.

R/T, related to.

R2R , Reach to Recovery ACS program.

RA, refractory anemia.

RA, rheumatoid arthritis.

RA, right atrium.

RACS, Royal Australasian College of Surgeons.

rad , radiotherapy.

rad, radiation absorbed dose.

RAEB, refractory anemia with excess blasts.

RAI, radioactive iodine uptake.

RAIU, radioactive iodine uptake.

RAP, right atrial pressure.

RAPD, relative afferent pupillary defect.

RAR-? , retinoic acid receptor-alpha (gene on chromosome 17).

RAS, renin-angiotensin system.

RAST, serum radioallergosorbent test (test for milk sensitivity).

RATx, radiation therapy

RBBB, right bundle branch block.

RBC, red blood cells/count.

RBE, relative biological effects.

RBF, renal blood flow.

RBILD, respiratory bronchiolotis interstitial lyng disease.

RBWC, randomly bred White Carneau pigeons.

RCA, right coronary artery.

RCA1, Ricinus communis agglutinin.

rCBF, regional cerebral blood flow.

RCM, right costal margin.

RCMD, refractory cytopenia with multilineage dysplasia.

RCMI, red blood cell morphologic index.

RCP, Royal College of Physicians.

RCPSC, Royal College of Physicians and Surgeons of Canada.

RCR, respiratory control ratio.

RCSED, Royal College of Surgeons of Edinburgh.

RCSENG, Royal College of Surgeons of England.

RCSI, Royal College of Surgeons in Ireland.

RCT, randomized controlled trial.

RD, respiratory disease.

RDA, recommended dietary allowance.

RDS, respiratory distress syndrome.

RDW, red cell distribution width.

RE, right eye.

re:, regarding.

REAL, Revised European American Classification.

Reg, regular.

Reg., registrar.

REL, release.

REM, rapid eye movement.

REP, repair.

REPS, repetitions.

RES, reticuloendothelial system.

RESNA, Rehabilitation Engineering and Assistive Technology Society of North American.

Resp, respiration, respiratory.

REV, Reticuloendotheliosis virus.

RF, rheumatic fever, rheumatoid factor.

RFA, radiofrequency ablation.

RFA, ratio of fat area.

RFFIT, rapid fluorescent focus inhibition test.

RFI, renal failure index: UNa/(UCr/PCr).

RFLP, restriction-fragment length polymorphism.

RFS, relapse free survival.

RGD, arginine-glycine-asparagine (aminoacid sequence responsible for cell-binding properties of fibronectin, vitronectin, fibrinogen, laminin, collagen).

RGO, reciprocating gait orthosis.

Rh neg. (Rh-), Rhesus factor negative.

Rh pos. (Rh+), Rhesus factor positive.

RH, relative humidity.

RH, Reproductive Health.

Rh, Rhesus (monkey) factor.

rhBMP-2, recombinant human bone morphogenetic protein.

RHD, rheumatic heart disease.

RI, resistive index.

RI, reticulocyte index = (%reticulocyte x pt Hct)/45 x (1/shift correction factor); (shift correction factor = 1.5 for Hct 35%; 2 for Hct 25%; 2.5 for Hct 15%); if RI <2% = hypoproliferative anemia, if RI 2% = excessive destruction or loss.

RIA, radioimmunoassay.

RICE, rest, ice, compression, and elevation.

RIND, reversible ischemic neurologic deficit.

RIS, Risperidone.

RJOS, Ruth Jackson Orthopaedic Society (also: AAOS Specialty Societies).

RK, rabbit kidney.

RL, right lateral.

RLA, Resident Legal Advisor.

RLD, reference lumen diameter.

RLE, rabbit limbal epithelial.

RLE, rabbit liver esterase.

RLE, rat liver epithelial cells.

RLE, rat lung epithelial cells.

RLFP, remaining lifetime fracture probability.

RLL, right lower lobe (lung).

RLQ, right lower quadrant (abdomen).

RM, routine maintenance.

RMA, refuse/s medical assistance.

RML, right middle lobe (lung); right mediolateral.

RMR, resting metabolic rate.

RN, registered nurse.

RNA, ribonucleic acid.

RO, rule out.

ROA, right occiput anterior.

ROC, receiver operating curve analysis.

ROD, removal of drain.

ROI, region of interest.

ROM, range of motion (of joint).

ROMI, Rating of Medication Influences scale (psychiatry).

ROMI, rule-out myocardial infarction.

ROP, retinopathy of prematurity.

ROP, right occiput posterior.

ROS, removal of sutures.

ROS, review of symptoms.

ROS, review of systems.

ROT, right occiput transverse

ROT, rule of thumb.

RP, red pulp.

RP, retrograde pyelogram.

RPD, ERP dispersion.

RPE, retinal pigment epithelium.

RPGN, rapidly progressive glomerulonephritis.

RPI, reticulocyte production index.

RPP, rate pressure product.

RPR, rapid plasma reagin.

RPT, register physical therapy.

RR, relative risk.

RR, respiratory rate.

RR, risk ratio.

RRF, residual renal function.

RRMS, relapsing remitting multiple sclerosis.

RROM, resistive range of motion.

RROSR, RoundupReady* oilseed rape.

RRR, regular rate and rhythm.

RRT, random response technique.

RRT, Registered Respiratory Therapist.

RRT, relative retention time.

RRU, respiratory resistance unit.

RRV-TV, rhesus rotavirus vaccine-tetravalent.

RS, radioscaphoid.

RS, random sample.

RS, rating schedule.

Rs, Rauwolfia serpentina.

RS, Raynaud syndrome.

RS, recipient’s serum.

RS, reclassification sensitivity.

RS, rectal sinus.

RS, rectal suppository.

RS, rectosigmoid.

RS, reducing substance.

RS, Reed-Sternberg cells characteristic for Hodgkin’s disease.

RS, reinforcing stimulus.

RS, Reiter syndrome.

RS, relative stimulus.

RS, renal specialist.

RS, respiratory syncytial (virus).

RS, response to stimulus.

RS, resting subject.

RS, reticulated siderocyte.

RS, retinoschisis.

RS, Rett syndrome.

RS, review of symptoms.

RS, Reye syndrome.

RS, Richter's syndrome (transformation of CLL in DLCL).

RS, right sacrum.

RS, right septum.

RS, right side.

RS, right stellate (ganglion).

RS, Ringer solution.

RS, Roberts syndrome.

RS, Rous sarcoma.

Rs, systemic resistance.

RS3PE, remitting seronegative symmetrical synovitis with pitting edema.

RSA, rabbit serum albumin.

RSA, regular spiking activity.

RSA, relative specific activity.

RSA, relative standard accuracy.

RSA, reticulum cell sarcoma.

RSA, right sacroanterior (fetal position).

RSA, right subclavian artery.

RSA, roentgenographic stereogrammetric analysis.

Rsa, systemic arterial resistance.

RSB, Rapid Shallow Breathing Index.

RSB, rectal suction biopsy.

RSB, recurrent sinus barotrauma.

RSB, reticulocyte standard buffer.

RSB, retinal Schiff base.

RSB, right sternal border.

RSB, roasted soybeans.

RSC, rat spleen cell.

RSC, rested state contraction.

RSC, reversible sickle-cell.

RSC, right subclavian.

RScA, right scapuloanterior (fetal position).

RSCN, Registered Sick Children’s Nurse.

RScP, right scapuloposterior (fetal position).

RSD, reflex sympathetic dystrophy.

RSD, relative standard deviation (Srel).

RSDS, reflex sympathetic dystrophy syndrome.

RSE, rapid spin-echo.

RSEP, right somatosensory evoked potential.

RSES, Rosenberg Self-Esteem Scale.

RSH, Royal Society of Health.

RSI, rapid sequence induction.

RSI, rapid sequence intubation.

RSI, repetition strain injury.

RSIC, Radiation Shielding Information Center.

R-SIRS, Revised Seriousness of Illness Rating Scale.

RSJVP, rapid-sequence intravenous pyelography.

RSL, radioscapholunate ligament.

RSL, right sacrolateral (fetal position).

RSLD, repair of sublethal damage.

RSM, restriction site mutation.

RSM, risk screening model.

RSM, Royal Society of Medicine.

RSMR, relative standard mortality rate.

RSN, restin.

RSN, right substantia nigra.

RSNA , Radiological Society of North America.

RSO, radiation safety officer.

RSO, Resident Surgical Officer.

RSO, right superior oblique (muscle).

rSO2, regional oxygen saturation.

RSP, removable silicone plug.

RSP, ribose-5-phosphatase.

RSP, right sacroposterior (fetal position).

RSPCA, Royal Society for the Prevention of Cruelty to Animals.

RSPH, Royal Society for the Promotion of Health.

RSPK, recurrent spontaneous psychokinesis.

rSr, an electrocardiographic complex.

RSR, regular sinus rhythm.

RSR, relative survival rate.

RSR, right superior rectus (muscle).

RSS, rat stomach strip.

RSS, rectosigmoidoscopy.

RSS, Russell-Silver syndrome.

RSSE, Russian spring-sununer encephalitis.

RSSR, relative slow sinus rate.

RST, radiosensitivity test.

RST, reagin screen test.

RST, right sacrotransverse (fetal position).

RST, rubrospinal tract.

RSTI, Radiological Service Training Institute.

RSTL, relaxed skin tension lines.

RSTMH, Royal Society of Tropical Medicine and Hygiene.

RSTS, retropharyngeal soft tissue space.

RSU, radiological sciences unit.

RSV, respiratory syncytial virus.

RSV, right subclavian vein.

RSV, Rous sarcoma virus.

RSVC, right superior vena cava.

RSVP, retired senior volunteer program.

RT(ARRT), Radiologic Technologist certified by the American Registry of Radiologic Technologists.

RT(N)(ARRT), Radiologic Technologist (Nuclear Medicine) certified by the American Registry of Radiologic Technologists.

RT(R)(ARRT), Registered Technologist, Radiography certified by the American Registry of Radiologic Technologists).

RT(T)(ARRT), Radiologic Technologist (Radiation Therapy) certified by the American Registry of Radiologic Technologists.

rt, lat right lateral.

RT, radiologic technologist.

RT, radiotelemetry.

RT, radiotherapy.

RT, radium therapy.

RT, rapid tranquilization.

RT, reaction time.

RT, reading test.

RT, reciprocating tachycardia.

RT, recreational therapy.

RT, rectal temperature.

RT, reduction time.

RT, Registered Technician.

RT, renal transplantation.

RT, resistance transfer.

RT, respiratory therapist/therapy.

RT, response time.

RT, rest tremor.

RT, retransformation.

RT, reverse transcriptase.

RT, reverse transcription.

rT, ribothymidine.

RT, right thigh.

Rt, right.

RT, room temperature.

RT, Rubinstein-Taybi (syndrome).

Rt, total resistance.

rt., right

RT3, rT3 reverse triiodothyronine.

RT₃U, resin T₃ uptake.

RTA, ray tracing algorithm.

RTA, renal tubular acidosis.

RTA, reverse transcriptase assay.

RTA, road traffic accident.

RTAD, renal tubular acidification defect.

RTC, random control trial.

RTC, rape treatment center.

RTC, renal tubular cell.

RTC, residential treatment center.

rtc, return to clinic.

RTC, return to clinic.

RTC, round the clock.

RT-CT, radiotherapy dedicated computed tomography.

RTD, renal tubular defect.

Rtd, retarded.

RTD, routine test dilution.

RTECS, Registry of Toxic Effects of Chemical Substances.

RTF, resistance transfer factor.

RTF, respiratory tract fluid.

RTG-2, rainbow trout gonadal tissue cells.

rTHF, recombinant tumor necrosis factor.

RTI, respiratory tract infection.

RTI, reverse transcriptase inhibition.

RTK, receptor-tyrosine kinase: rhabdoid tumor of the kidney.

rtl, rectal.

RTM, registered trademark.

rTMS, repetitive transcranial magnetic stimulation.

RTN, renal tubular necrosis.

RTO, return to office.

RTO, right toe off.

RTOG, Radiation Therapy Oncology Group.

RTOG, radiation therapy oncology group.

RTP, radiation treatment planning.

RTP, renal transplantation patient.

RTP, reverse transcriptase-producing (agent).

rt-PA, recombinant tissue plasminogen activator.

rTPA/rtPA, recombinant tissue plasminogen activator.

RTPCR, reverse transcriptase polymerase chain reaction.

RT-PCR, reverse transcriptase polymerase chain reaction.

RTR, Recreational Therapist, Registered.

RTR, red blood cell turnover rate.

RTR, retention time ratio.

RTs, reaction times.

RTS, real time scan.

RTs, relaxation times.

RTs, residence times.

RTs, respiratory therapists.

RTS, respiratory tract secretions.

RTS, Rett syndrome.

RTs, reverse transcriptases.

RTS, revised trauma score.

RTS, revised trauma scores.

RTS, right toestrike.

RTS, Rothmund-Thomson syndrome.

RTS, Rubinstein-Taybi syndrome.

RU 486, antiprogesterone used for abortion in early gestation.

RU, resin uptake.

RU, routine urinalysis.

RUL, right upper lobe (lung).

RUQ, right upper quadrant (abdomen).

RUT, rapid urease test.

RV, residual volume of lung.

RV, right ventricle.

RVAS, right ventricular assist system.

RVDC, right ventricle diastolic collapse.

RVF, right ventricular failure.

RVH, right ventricular hypertrophy.

RVLM, rostral ventrolateral medulla.

RVMI, right ventricle myocardial infarction.

RVP, reduced vascular response; resting venous pressure; right ventricular pressure.

RVQ, relaxed vaginal outlet.

RVR, respiratory rate:tidal volume ratio.

RVT, renal vein thrombosis.

Rx, prescription.

Rx, treatment, therapy.

RXR, retinoid receptors.

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