A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

R - R rectal.

R - R residual tumor after treatment.

R - R respiration (also resp).

R - R right.

R - R roentgen.

R - R

R-SIRS - R-SIRS Revised Seriousness of Illness Rating Scale.

R.D. - R.D. registered dietician.

R.P.R. - R.P.R. rpr rapid plasma reagin.

R.R. - R.R. recovery room.

R/O - R/O rule out.

R/s - R/s roentgens per second.

R/T - R/T related to.

R2R - R2R Reach to Recovery ACS program.

RA - RA refractory anemia.

RA - RA rheumatoid arthritis.

RA - RA right atrium.

RACS - RACS Royal Australasian College of Surgeons.

rad - rad radiation absorbed dose.

rad - rad radiotherapy.

RAEB - RAEB refractory anemia with excess blasts.

RAI - RAI radioactive iodine uptake.

RAIU - RAIU radioactive iodine uptake.

RAP - RAP right atrial pressure.

RAPD - RAPD relative afferent pupillary defect.

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

RAS - RAS renin-angiotensin system.

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

RATx - RATx radiation therapy

RBBB - RBBB right bundle branch block.

RBC - RBC red blood cells/count.

RBE - RBE relative biological effects.

RBF - RBF renal blood flow.

RBILD - RBILD respiratory bronchiolotis interstitial lyng disease.

RBWC - RBWC randomly bred White Carneau pigeons.

RCA - RCA right coronary artery.

RCA1 - RCA1 Ricinus communis agglutinin.

rCBF - rCBF regional cerebral blood flow.

RCM - RCM right costal margin.

RCMD - RCMD refractory cytopenia with multilineage dysplasia.

RCMI - RCMI red blood cell morphologic index.

RCP - RCP Royal College of Physicians.

RCPSC - RCPSC Royal College of Physicians and Surgeons of Canada.

RCR - RCR respiratory control ratio.

RCSED - RCSED Royal College of Surgeons of Edinburgh.

RCSENG - RCSENG Royal College of Surgeons of England.

RCSI - RCSI Royal College of Surgeons in Ireland.

RCT - RCT randomized controlled trial.

RD - RD respiratory disease.

RDA - RDA recommended dietary allowance.

RDS - RDS respiratory distress syndrome.

RDW - RDW red cell distribution width.

RE - RE right eye.

re: - re: regarding.

REAL - REAL Revised European American Classification.

Reg - Reg regular.

Reg. - Reg. registrar.

REL - REL release.

REM - REM rapid eye movement.

REP - REP repair.

REPS - REPS repetitions.

RES - RES reticuloendothelial system.

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

Resp - Resp respiration respiratory.

REV - REV Reticuloendotheliosis virus.

RF - RF rheumatic fever rheumatoid factor.

RFA - RFA radiofrequency ablation.

RFA - RFA ratio of fat area.

RFFIT - RFFIT rapid fluorescent focus inhibition test.

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

RFLP - RFLP restriction-fragment length polymorphism.

RFS - RFS relapse free survival.

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

RGO - RGO reciprocating gait orthosis.

RH - RH relative humidity.

RH - RH Reproductive Health.

Rh - Rh Rhesus (monkey) factor.

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

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

rhBMP-2 - rhBMP-2 recombinant human bone morphogenetic protein.

RHD - RHD rheumatic heart disease.

RI - RI resistive index.

RI - 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 - RIA radioimmunoassay.

RICE - RICE rest ice compression and elevation.

RIND - RIND reversible ischemic neurologic deficit.

RIS - RIS Risperidone.

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

RK - RK rabbit kidney.

RL - RL right lateral.

RLA - RLA Resident Legal Advisor.

RLD - RLD reference lumen diameter.

RLE - RLE rabbit limbal epithelial.

RLE - RLE rabbit liver esterase.

RLE - RLE rat liver epithelial cells.

RLE - RLE rat lung epithelial cells.

RLFP - RLFP remaining lifetime fracture probability.

RLL - RLL right lower lobe (lung).

RLQ - RLQ right lower quadrant (abdomen).

RM - RM routine maintenance.

RMA - RMA refuse/s medical assistance.

RML - RML right middle lobe (lung); right mediolateral. elevation.

RMR - RMR resting metabolic rate. elevation modalities medication.

RN - RN registered nurse. evaluation salicylates.

RNA - RNA ribonucleic acid. elevation support.

RO - RO rule out.

ROA - ROA right occiput anterior.

ROC - ROC receiver operating curve analysis.

ROD - ROD removal of drain.

ROI - ROI region of interest.

ROM - ROM range of motion (of joint).

ROMI - ROMI Rating of Medication Influences scale (psychiatry).

ROMI - ROMI rule-out myocardial infarction.

ROP - ROP retinopathy of prematurity.

ROP - ROP right occiput posterior.

ROS - ROS removal of sutures.

ROS - ROS review of symptoms.

ROS - ROS review of systems.

ROT - ROT right occiput transverse

ROT - ROT rule of thumb.

RP - RP red pulp.

RP - RP retrograde pyelogram.

RPD - RPD ERP dispersion.

RPE - RPE retinal pigment epithelium.

RPGN - RPGN rapidly progressive glomerulonephritis.

RPI - RPI reticulocyte production index. etoposide cytarabine bleomycin vincristine methotrexate.

RPP - RPP rate pressure product.

RPR - RPR rapid plasma reagin.

RPT - RPT register physical therapy.

RR - RR relative risk.

RR - RR respiratory rate.

RR - RR risk ratio.

RRF - RRF residual renal function.

RRMS - RRMS relapsing remitting multiple sclerosis.

RROM - RROM resistive range of motion.

RROSR - RROSR RoundupReady* oilseed rape.

RRR - RRR regular rate and rhythm.

RRT - RRT random response technique.

RRT - RRT Registered Respiratory Therapist.

RRT - RRT relative retention time.

RRU - RRU respiratory resistance unit.

RRV-TV - RRV-TV rhesus rotavirus vaccine-tetravalent.

RS - RS radioscaphoid.

RS - RS random sample.

RS - RS rating schedule.

Rs - Rs Rauwolfia serpentina.

RS - RS Raynaud syndrome.

RS - RS recipient’s serum.

RS - RS reclassification sensitivity.

RS - RS rectal sinus.

RS - RS rectal suppository.

RS - RS rectosigmoid.

RS - RS reducing substance.

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

RS - RS reinforcing stimulus.

RS - RS Reiter syndrome.

RS - RS relative stimulus.

RS - RS renal specialist.

RS - RS respiratory syncytial (virus).

RS - RS response to stimulus.

RS - RS resting subject.

RS - RS reticulated siderocyte.

RS - RS retinoschisis.

RS - RS Rett syndrome.

RS - RS review of symptoms.

RS - RS Reye syndrome.

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

RS - RS right sacrum.

RS - RS right septum.

RS - RS right side.

RS - RS right stellate (ganglion).

RS - RS Ringer solution.

RS - RS Roberts syndrome.

RS - RS Rous sarcoma.

Rs - Rs systemic resistance.

RS3PE - RS3PE remitting seronegative symmetrical synovitis with pitting edema.

RSA - RSA rabbit serum albumin.

RSA - RSA regular spiking activity.

RSA - RSA relative specific activity.

RSA - RSA relative standard accuracy.

RSA - RSA reticulum cell sarcoma.

RSA - RSA right sacroanterior (fetal position).

RSA - RSA right subclavian artery.

RSA - RSA roentgenographic stereogrammetric analysis.

Rsa - Rsa systemic arterial resistance.

RSB - RSB Rapid Shallow Breathing Index.

RSB - RSB rectal suction biopsy.

RSB - RSB recurrent sinus barotrauma.

RSB - RSB reticulocyte standard buffer.

RSB - RSB retinal Schiff base.

RSB - RSB right sternal border.

RSB - RSB roasted soybeans.

RSC - RSC rat spleen cell.

RSC - RSC rested state contraction.

RSC - RSC reversible sickle-cell.

RSC - RSC right subclavian.

RScA - RScA right scapuloanterior (fetal position).

RSCN - RSCN Registered Sick Children’s Nurse.

RScP - RScP right scapuloposterior (fetal position).

RSD - RSD reflex sympathetic dystrophy.

RSD - RSD relative standard deviation (Srel).

RSDS - RSDS reflex sympathetic dystrophy syndrome.

RSE - RSE rapid spin-echo.

RSEP - RSEP right somatosensory evoked potential.

RSES - RSES Rosenberg Self-Esteem Scale.

RSH - RSH Royal Society of Health.

RSI - RSI rapid sequence induction.

RSI - RSI rapid sequence intubation.

RSI - RSI repetition strain injury.

RSIC - RSIC Radiation Shielding Information Center.

RSJVP - RSJVP rapid-sequence intravenous pyelography.

RSL - RSL radioscapholunate ligament.

RSL - RSL right sacrolateral (fetal position).

RSLD - RSLD repair of sublethal damage.

RSM - RSM restriction site mutation.

RSM - RSM risk screening model.

RSM - RSM Royal Society of Medicine.

RSMR - RSMR relative standard mortality rate.

RSN - RSN restin.

RSN - RSN right substantia nigra.

RSNA - RSNA Radiological Society of North America.

RSO - RSO radiation safety officer.

RSO - RSO Resident Surgical Officer.

RSO - RSO right superior oblique (muscle).

rSO2 - rSO2 regional oxygen saturation.

RSP - RSP removable silicone plug.

RSP - RSP ribose-5-phosphatase.

RSP - RSP right sacroposterior (fetal position).

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

RSPH - RSPH Royal Society for the Promotion of Health.

RSPK - RSPK recurrent spontaneous psychokinesis.

rSr - rSr an electrocardiographic complex.

RSR - RSR regular sinus rhythm.

RSR - RSR relative survival rate.

RSR - RSR right superior rectus (muscle).

RSS - RSS rat stomach strip.

RSS - RSS rectosigmoidoscopy.

RSS - RSS Russell-Silver syndrome.

RSSE - RSSE Russian spring-sununer encephalitis.

RSSR - RSSR relative slow sinus rate.

RST - RST radiosensitivity test.

RST - RST reagin screen test.

RST - RST right sacrotransverse (fetal position).

RST - RST rubrospinal tract.

RSTI - RSTI Radiological Service Training Institute.

RSTL - RSTL relaxed skin tension lines.

RSTMH - RSTMH Royal Society of Tropical Medicine and Hygiene.

RSTS - RSTS retropharyngeal soft tissue space.

RSU - RSU radiological sciences unit.

RSV - RSV respiratory syncytial virus.

RSV - RSV right subclavian vein.

RSV - RSV Rous sarcoma virus.

RSVC - RSVC right superior vena cava.

RSVP - RSVP retired senior volunteer program.

rt - rt lat right lateral.

RT - RT radiologic technologist.

RT - RT radiotelemetry.

RT - RT radiotherapy.

RT - RT radium therapy.

RT - RT rapid tranquilization.

RT - RT reaction time.

RT - RT reading test.

RT - RT reciprocating tachycardia.

RT - RT recreational therapy.

RT - RT rectal temperature.

RT - RT reduction time.

RT - RT Registered Technician.

RT - RT renal transplantation.

RT - RT resistance transfer.

RT - RT respiratory therapist/therapy.

RT - RT response time.

RT - RT rest tremor.

RT - RT retransformation.

RT - RT reverse transcriptase.

RT - RT reverse transcription.

rT - rT ribothymidine.

RT - RT right thigh.

Rt - Rt right.

RT - RT room temperature.

RT - RT Rubinstein-Taybi (syndrome).

Rt - Rt total resistance.

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

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

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

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

RT-CT - RT-CT radiotherapy dedicated computed tomography.

rt-PA - rt-PA recombinant tissue plasminogen activator.

RT-PCR - RT-PCR reverse transcriptase polymerase chain reaction.

rt. - rt. right

RT3 - RT3 rT3 reverse triiodothyronine.

RT3U - RT3U resin T3 uptake.

RTA - RTA ray tracing algorithm.

RTA - RTA renal tubular acidosis.

RTA - RTA reverse transcriptase assay.

RTA - RTA road traffic accident.

RTAD - RTAD renal tubular acidification defect.

RTC - RTC random control trial.

RTC - RTC rape treatment center.

RTC - RTC renal tubular cell.

RTC - RTC residential treatment center.

rtc - rtc return to clinic.

RTC - RTC return to clinic.

RTC - RTC round the clock.

RTD - RTD renal tubular defect.

Rtd - Rtd retarded.

RTD - RTD routine test dilution.

RTECS - RTECS Registry of Toxic Effects of Chemical Substances.

RTF - RTF resistance transfer factor.

RTF - RTF respiratory tract fluid.

RTG-2 - RTG-2 rainbow trout gonadal tissue cells.

rTHF - rTHF recombinant tumor necrosis factor.

RTI - RTI respiratory tract infection.

RTI - RTI reverse transcriptase inhibition.

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

rtl - rtl rectal.

RTM - RTM registered trademark.

rTMS - rTMS repetitive transcranial magnetic stimulation.

RTN - RTN renal tubular necrosis.

RTO - RTO return to office.

RTO - RTO right toe off.

RTOG - RTOG Radiation Therapy Oncology Group.

RTOG - RTOG radiation therapy oncology group.

RTP - RTP radiation treatment planning.

RTP - RTP renal transplantation patient.

RTP - RTP reverse transcriptase-producing (agent).

rTPA/rtPA - rTPA/rtPA recombinant tissue plasminogen activator.

RTPCR - RTPCR reverse transcriptase polymerase chain reaction.

RTR - RTR Recreational Therapist Registered.

RTR - RTR red blood cell turnover rate.

RTR - RTR retention time ratio.

RTs - RTs reaction times.

RTS - RTS real time scan.

RTs - RTs relaxation times.

RTs - RTs residence times.

RTs - RTs respiratory therapists.

RTS - RTS respiratory tract secretions.

RTS - RTS Rett syndrome.

RTs - RTs reverse transcriptases.

RTS - RTS revised trauma score.

RTS - RTS revised trauma scores.

RTS - RTS right toestrike.

RTS - RTS Rothmund-Thomson syndrome.

RTS - RTS Rubinstein-Taybi syndrome.

RU - RU resin uptake.

RU - RU routine urinalysis.

RU 486 - RU 486 antiprogesterone used for abortion in early gestation.

RUL - RUL right upper lobe (lung).

RUQ - RUQ right upper quadrant (abdomen).

RUT - RUT rapid urease test.

RV - RV residual volume of lung.

RV - RV right ventricle.

RVAS - RVAS right ventricular assist system.

RVDC - RVDC right ventricle diastolic collapse.

RVF - RVF right ventricular failure.

RVH - RVH right ventricular hypertrophy.

RVLM - RVLM rostral ventrolateral medulla.

RVMI - RVMI right ventricle myocardial infarction.

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

RVQ - RVQ relaxed vaginal outlet.

RVR - RVR respiratory rate:tidal volume ratio.

RVT - RVT renal vein thrombosis.

Rx - Rx prescription. collagen).

Rx - Rx treatment therapy.

RXR - RXR retinoid receptors.

Abbreviations - R