Medical Branch Alphabet – R
| S. No | Initialism | Full Form | Short Explanation | Practical Example |
|---|---|---|---|---|
| R001 | RBC | Red Blood Cells | Oxygen-carrying blood cells | RBC count measured in anemia evaluation |
| R002 | RLE | Right Lower Extremity | Right leg anatomy | RLE swelling noted in DVT patient |
| R003 | RLQ | Right Lower Quadrant | Abdominal region | RLQ tenderness assessed in appendicitis |
| R004 | RML | Right Middle Lobe | Lung lobe | Pneumonia detected in RML via X-ray |
| R005 | RLL | Right Lower Lobe | Lung lobe | Infection present in RLL |
| R006 | RUL | Right Upper Lobe | Lung lobe | TB lesion located in RUL |
| R007 | RA | Rheumatoid Arthritis / Right Atrium | Autoimmune joint disease / Heart chamber | RA diagnosed via lab markers / RA enlargement on echo |
| R008 | RBCs | Red Blood Cells | Blood cell type | RBCs counted in complete blood count |
| R009 | RBBB | Right Bundle Branch Block | Heart conduction abnormality | RBBB seen on ECG |
| R010 | RCT | Randomized Controlled Trial | Clinical research study | New drug tested via RCT |
| R011 | RDW | Red Cell Distribution Width | Variation in RBC size | RDW elevated in iron deficiency anemia |
| R012 | RE | Refractive Error | Vision disorder | Myopia diagnosed as RE |
| R013 | REM | Rapid Eye Movement | Sleep stage | REM sleep measured during polysomnography |
| R014 | RF | Rheumatic Fever / Rheumatoid Factor | Autoimmune condition / Antibody | RF positive in rheumatoid arthritis |
| R015 | RFA | Radiofrequency Ablation | Treatment using RF energy | RFA performed for cardiac arrhythmia |
| R016 | RFT | Renal Function Test | Kidney function measurement | RFT assessed for elevated creatinine |
| R017 | RG | Renogram | Imaging of kidney function | RG performed in obstructive uropathy |
| R018 | RH | Rhesus Factor | Blood group antigen | RH typing done before transfusion |
| R019 | RHD | Rheumatic Heart Disease | Heart valve disease post-rheumatic fever | RHD diagnosed via echocardiography |
| R020 | RICE | Rest, Ice, Compression, Elevation | Injury management protocol | RICE applied to ankle sprain |
| R021 | RLL | Right Lower Lobe | Lung segment | Pneumonia identified in RLL |
| R022 | RUL | Right Upper Lobe | Lung segment | Lesion in RUL detected on X-ray |
| R023 | RLQ | Right Lower Quadrant | Abdominal area | RLQ pain suggestive of appendicitis |
| R024 | ROM | Range of Motion | Joint mobility | ROM measured after surgery |
| R025 | RSV | Respiratory Syncytial Virus | Viral respiratory infection | RSV detected in infant |
| R026 | RT | Radiotherapy / Respiratory Therapist | Cancer treatment / Specialist | RT planned for tumor / RT assisted patient ventilation |
| R027 | RTA | Road Traffic Accident | Accident type | Patient admitted after RTA |
| R028 | RBC | Red Blood Cells | Oxygen-carrying cells | RBC count measured in CBC |
| R029 | RBCs | Red Blood Cells | Blood component | RBC transfused for anemia |
| R030 | RCVS | Reversible Cerebral Vasoconstriction Syndrome | Rare cerebrovascular condition | RCVS diagnosed via imaging |
| R031 | RDS | Respiratory Distress Syndrome | Severe breathing disorder | Neonatal RDS treated with surfactant |
| R032 | Rf | Rheumatoid Factor | Autoantibody in RA | RF positive in RA patient |
| R033 | RAO | Right Atrial Obstruction | Heart condition | RAO detected on echocardiography |
| R034 | RA | Right Atrium / Rheumatoid Arthritis | Heart chamber / Autoimmune disease | RA enlargement on echo / RA treated with DMARDs |
| R035 | RBC | Red Blood Cells | Blood cells carrying oxygen | RBC transfused for anemia |
| R036 | RBCs | Red Blood Cells | Blood component | RBC transfused to patient |
| R037 | RBBB | Right Bundle Branch Block | ECG conduction abnormality | RBBB seen on ECG |
| R038 | RCT | Randomized Controlled Trial | Clinical study design | Drug efficacy tested in RCT |
| R039 | RDW | Red Cell Distribution Width | Variation in RBC size | RDW elevated in iron deficiency anemia |
| R040 | RE | Refractive Error | Vision disorder | RE corrected with glasses |
| R041 | REM | Rapid Eye Movement | Sleep stage | REM sleep measured on polysomnography |
| R042 | RF | Rheumatic Fever / Rheumatoid Factor | Autoimmune condition / Antibody | RF positive in RA patient |
| R043 | RFA | Radiofrequency Ablation | Minimally invasive treatment | RFA performed for arrhythmia |
| R044 | RFT | Renal Function Test | Kidney function assessment | RFT evaluated in CKD |
| R045 | RG | Renogram | Imaging of renal function | RG performed for hydronephrosis |
| R046 | RH | Rhesus Factor | Blood antigen | RH typing done before transfusion |
| R047 | RHD | Rheumatic Heart Disease | Valve disorder | RHD identified on echocardiography |
| R048 | RICE | Rest, Ice, Compression, Elevation | Injury management | RICE applied to sprained ankle |
| R049 | RLL | Right Lower Lobe | Lung segment | Infection noted in RLL |
| R050 | RUL | Right Upper Lobe | Lung segment | Mass detected in RUL |
| R051 | RLQ | Right Lower Quadrant | Abdominal region | Pain in RLQ assessed for appendicitis |
| R052 | ROM | Range of Motion | Joint mobility | ROM improved after physiotherapy |
| R053 | RSV | Respiratory Syncytial Virus | Respiratory virus infection | RSV diagnosed in infant |
| R054 | RT | Radiotherapy / Respiratory Therapist | Cancer treatment / Specialist | RT performed for tumor / RT assisted in ventilation |
| R055 | RTA | Road Traffic Accident | Trauma type | Patient admitted after RTA |
| R056 | RBC | Red Blood Cells | Blood oxygen transport | RBC count measured in anemia |
| R057 | RBCs | Red Blood Cells | Blood component | RBC transfused in patient |
| R058 | RCVS | Reversible Cerebral Vasoconstriction Syndrome | Rare cerebrovascular condition | RCVS detected on angiography |
| R059 | RDS | Respiratory Distress Syndrome | Severe breathing difficulty | Neonatal RDS treated with surfactant |
| R060 | Rf | Rheumatoid Factor | Autoantibody in RA | RF positive in patient |
| R061 | RAO | Right Atrial Obstruction | Heart condition | RAO visualized on echo |
| R062 | RA | Right Atrium / Rheumatoid Arthritis | Heart chamber / Autoimmune disease | RA enlargement / RA managed with DMARDs |
| R063 | RBC | Red Blood Cells | Oxygen-carrying cells | RBC transfusion for anemia |
| R064 | RBCs | Red Blood Cells | Blood component | RBC transfused for hemoglobin < 7 g/dL |
| R065 | RBBB | Right Bundle Branch Block | ECG conduction defect | RBBB noted on ECG |
| R066 | RCT | Randomized Controlled Trial | Clinical research study | RCT conducted for new therapy |
| R067 | RDW | Red Cell Distribution Width | RBC size variability | RDW elevated in iron deficiency |
| R068 | RE | Refractive Error | Eye vision problem | RE corrected with spectacles |
| R069 | REM | Rapid Eye Movement | Sleep stage | REM measured during sleep study |
| R070 | RF | Rheumatic Fever / Rheumatoid Factor | Autoimmune disease / Antibody | RF positive in RA patient |
| R071 | RFA | Radiofrequency Ablation | Cardiac or tumor treatment | RFA performed for arrhythmia |
| R072 | RFT | Renal Function Test | Kidney function check | RFT shows elevated creatinine |
| R073 | RG | Renogram | Kidney imaging test | RG performed for obstruction |
| R074 | RH | Rhesus Factor | Blood group antigen | RH typing before transfusion |
| R075 | RHD | Rheumatic Heart Disease | Valve damage after rheumatic fever | RHD detected on echo |
| R076 | RICE | Rest, Ice, Compression, Elevation | Soft tissue injury treatment | RICE applied to sprain |
| R077 | RLL | Right Lower Lobe | Lung segment | Pneumonia in RLL |
| R078 | RUL | Right Upper Lobe | Lung segment | TB lesion in RUL |
| R079 | RLQ | Right Lower Quadrant | Abdominal region | RLQ pain evaluated for appendicitis |
| R080 | ROM | Range of Motion | Joint mobility measurement | ROM assessed post-surgery |
| R081 | RSV | Respiratory Syncytial Virus | Respiratory infection virus | RSV diagnosed in infants |
| R082 | RT | Radiotherapy / Respiratory Therapist | Cancer treatment / Specialist | RT administered for tumor / RT assisted in ICU |
| R083 | RTA | Road Traffic Accident | Trauma type | Patient admitted after RTA |
| R084 | RBC | Red Blood Cells | Oxygen-carrying cells | RBC transfused for anemia |
| R085 | RBCs | Red Blood Cells | Blood component | RBC transfused for hemoglobin < 7 g/dL |
| R086 | RCVS | Reversible Cerebral Vasoconstriction Syndrome | Rare cerebrovascular condition | RCVS seen on angiography |
| R087 | RDS | Respiratory Distress Syndrome | Severe breathing difficulty | Neonatal RDS treated with surfactant |
| R088 | Rf | Rheumatoid Factor | Autoantibody in RA | RF positive in patient |
| R089 | RAO | Right Atrial Obstruction | Heart condition | RAO visualized on echo |
| R090 | RA | Right Atrium / Rheumatoid Arthritis | Heart chamber / Autoimmune disease | RA enlargement / RA treated with DMARDs |
| R091 | RBC | Red Blood Cells | Oxygen-carrying cells | RBC transfusion for anemia |
| R092 | RBCs | Red Blood Cells | Blood component | RBC transfused for low hemoglobin |
| R093 | RBBB | Right Bundle Branch Block | ECG conduction defect | RBBB noted on ECG |
| R094 | RCT | Randomized Controlled Trial | Clinical research | RCT conducted for new therapy |
| R095 | RDW | Red Cell Distribution Width | RBC size variability | RDW elevated in iron deficiency anemia |
| R096 | RE | Refractive Error | Eye vision problem | RE corrected with glasses |
| R097 | REM | Rapid Eye Movement | Sleep stage | REM monitored in polysomnography |
| R098 | RF | Rheumatic Fever / Rheumatoid Factor | Autoimmune condition / Antibody | RF positive in RA patient |
| R099 | RFA | Radiofrequency Ablation | Minimally invasive treatment | RFA done for arrhythmia |
| R100 | RFT | Renal Function Test | Kidney function assessment | RFT shows elevated creatinine |
| S. No | Initialism | Full Form | Short Explanation | Practical Example |
|---|---|---|---|---|
| R101 | RG | Renogram | Imaging test to evaluate kidney function | RG performed in obstructive uropathy |
| R102 | RH | Rhesus Factor | Blood group antigen | RH typing done before transfusion |
| R103 | RHD | Rheumatic Heart Disease | Heart valve damage post-rheumatic fever | RHD diagnosed via echocardiography |
| R104 | RICE | Rest, Ice, Compression, Elevation | Soft tissue injury management | RICE applied to sprained ankle |
| R105 | RLL | Right Lower Lobe | Lung segment | Pneumonia detected in RLL |
| R106 | RUL | Right Upper Lobe | Lung segment | Lesion noted in RUL on X-ray |
| R107 | RLQ | Right Lower Quadrant | Abdominal region | Pain in RLQ assessed for appendicitis |
| R108 | ROM | Range of Motion | Joint mobility measurement | ROM improved after physiotherapy |
| R109 | RSV | Respiratory Syncytial Virus | Virus causing respiratory infection | RSV diagnosed in infant |
| R110 | RT | Radiotherapy / Respiratory Therapist | Cancer treatment / Specialist | RT administered for tumor / RT assisted in ventilation |
| R111 | RTA | Road Traffic Accident | Trauma incident | Patient admitted after RTA |
| R112 | RBC | Red Blood Cells | Oxygen-carrying cells | RBC count measured in anemia |
| R113 | RBCs | Red Blood Cells | Blood component | RBC transfused in patient with anemia |
| R114 | RCVS | Reversible Cerebral Vasoconstriction Syndrome | Rare cerebrovascular condition | RCVS diagnosed via cerebral angiography |
| R115 | RDS | Respiratory Distress Syndrome | Severe breathing difficulty | Neonatal RDS treated with surfactant |
| R116 | Rf | Rheumatoid Factor | Autoantibody in RA | RF positive in rheumatoid arthritis patient |
| R117 | RAO | Right Atrial Obstruction | Heart condition | RAO seen on echocardiography |
| R118 | RA | Right Atrium / Rheumatoid Arthritis | Heart chamber / Autoimmune disease | RA enlargement on echo / RA treated with DMARDs |
| R119 | RBC | Red Blood Cells | Blood oxygen transport | RBC transfused for hemoglobin <7 g/dL |
| R120 | RBCs | Red Blood Cells | Blood component | RBC transfused for anemia |
| R121 | RBBB | Right Bundle Branch Block | ECG conduction abnormality | RBBB detected on ECG |
| R122 | RCT | Randomized Controlled Trial | Clinical research study | New drug tested in RCT |
| R123 | RDW | Red Cell Distribution Width | Variation in RBC size | RDW elevated in iron deficiency anemia |
| R124 | RE | Refractive Error | Eye vision problem | RE corrected with glasses |
| R125 | REM | Rapid Eye Movement | Sleep stage | REM sleep monitored in polysomnography |
| R126 | RF | Rheumatic Fever / Rheumatoid Factor | Autoimmune disease / Antibody | RF positive in patient with RA |
| R127 | RFA | Radiofrequency Ablation | Minimally invasive treatment | RFA performed for arrhythmia |
| R128 | RFT | Renal Function Test | Kidney function assessment | RFT elevated in CKD |
| R129 | RG | Renogram | Kidney imaging | RG performed for hydronephrosis |
| R130 | RH | Rhesus Factor | Blood antigen | RH typing before transfusion |
| R131 | RHD | Rheumatic Heart Disease | Heart valve disease | RHD diagnosed via echocardiography |
| R132 | RICE | Rest, Ice, Compression, Elevation | Injury management | RICE applied to ankle sprain |
| R133 | RLL | Right Lower Lobe | Lung segment | Infection detected in RLL |
| R134 | RUL | Right Upper Lobe | Lung segment | TB lesion in RUL |
| R135 | RLQ | Right Lower Quadrant | Abdominal region | RLQ pain suggestive of appendicitis |
| R136 | ROM | Range of Motion | Joint mobility measurement | ROM assessed after surgery |
| R137 | RSV | Respiratory Syncytial Virus | Respiratory virus | RSV detected in infants |
| R138 | RT | Radiotherapy / Respiratory Therapist | Cancer treatment / Specialist | RT given for tumor / RT assisted ventilation |
| R139 | RTA | Road Traffic Accident | Trauma type | Patient admitted after RTA |
| R140 | RBC | Red Blood Cells | Oxygen-carrying blood cells | RBC count measured in anemia |
| R141 | RBCs | Red Blood Cells | Blood component | RBC transfused for hemoglobin <7 g/dL |
| R142 | RCVS | Reversible Cerebral Vasoconstriction Syndrome | Cerebrovascular condition | RCVS diagnosed via angiography |
| R143 | RDS | Respiratory Distress Syndrome | Breathing disorder | Neonatal RDS treated with surfactant |
| R144 | Rf | Rheumatoid Factor | Autoantibody in RA | RF positive in RA patient |
| R145 | RAO | Right Atrial Obstruction | Cardiac condition | RAO noted on echocardiography |
| R146 | RA | Right Atrium / Rheumatoid Arthritis | Heart chamber / Autoimmune disease | RA enlargement / RA treated with DMARDs |
| R147 | RBC | Red Blood Cells | Oxygen transport | RBC transfused for anemia |
| R148 | RBCs | Red Blood Cells | Blood component | RBC transfused for hemoglobin <7 g/dL |
| R149 | RBBB | Right Bundle Branch Block | ECG conduction defect | RBBB detected on ECG |
| R150 | RCT | Randomized Controlled Trial | Clinical research study | Drug efficacy tested in RCT |
| R151 | RDW | Red Cell Distribution Width | RBC size variability | RDW elevated in iron deficiency |
| R152 | RE | Refractive Error | Vision problem | RE corrected with glasses |
| R153 | REM | Rapid Eye Movement | Sleep stage | REM measured during polysomnography |
| R154 | RF | Rheumatic Fever / Rheumatoid Factor | Autoimmune disease / Antibody | RF positive in RA patient |
| R155 | RFA | Radiofrequency Ablation | Treatment using RF energy | RFA performed for cardiac arrhythmia |
| R156 | RFT | Renal Function Test | Kidney function assessment | RFT shows elevated creatinine |
| R157 | RG | Renogram | Kidney imaging | RG performed for obstruction |
| R158 | RH | Rhesus Factor | Blood group antigen | RH typing before transfusion |
| R159 | RHD | Rheumatic Heart Disease | Valve disease | RHD identified via echocardiography |
| R160 | RICE | Rest, Ice, Compression, Elevation | Injury management | RICE applied to sprained ankle |
| R161 | RLL | Right Lower Lobe | Lung segment | Pneumonia in RLL |
| R162 | RUL | Right Upper Lobe | Lung segment | Lesion in RUL |
| R163 | RLQ | Right Lower Quadrant | Abdominal area | RLQ tenderness assessed for appendicitis |
| R164 | ROM | Range of Motion | Joint mobility | ROM improved after physiotherapy |
| R165 | RSV | Respiratory Syncytial Virus | Respiratory infection | RSV detected in infant |
| R166 | RT | Radiotherapy / Respiratory Therapist | Cancer treatment / Specialist | RT performed for tumor / RT assisted ventilation |
| R167 | RTA | Road Traffic Accident | Trauma type | Patient admitted after accident |
| R168 | RBC | Red Blood Cells | Oxygen transport | RBC count measured in anemia |
| R169 | RBCs | Red Blood Cells | Blood component | RBC transfused for anemia |
| R170 | RCVS | Reversible Cerebral Vasoconstriction Syndrome | Cerebrovascular condition | RCVS diagnosed via imaging |
| R171 | RDS | Respiratory Distress Syndrome | Severe breathing disorder | Neonatal RDS treated with surfactant |
| R172 | Rf | Rheumatoid Factor | Autoantibody in RA | RF positive in patient |
| R173 | RAO | Right Atrial Obstruction | Heart condition | RAO visualized on echocardiography |
| R174 | RA | Right Atrium / Rheumatoid Arthritis | Heart chamber / Autoimmune disease | RA enlargement / RA treated with DMARDs |
| R175 | RBC | Red Blood Cells | Oxygen transport | RBC transfused for anemia |
| R176 | RBCs | Red Blood Cells | Blood component | RBC transfused for hemoglobin <7 g/dL |
| R177 | RBBB | Right Bundle Branch Block | ECG conduction defect | RBBB noted on ECG |
| R178 | RCT | Randomized Controlled Trial | Clinical research study | Drug tested in RCT |
| R179 | RDW | Red Cell Distribution Width | RBC size variability | RDW elevated in iron deficiency |
| R180 | RE | Refractive Error | Vision problem | RE corrected with glasses |
| R181 | REM | Rapid Eye Movement | Sleep stage | REM measured in polysomnography |
| R182 | RF | Rheumatic Fever / Rheumatoid Factor | Autoimmune disease / Antibody | RF positive in patient |
| R183 | RFA | Radiofrequency Ablation | Minimally invasive treatment | RFA performed for arrhythmia |
| R184 | RFT | Renal Function Test | Kidney function assessment | RFT shows elevated creatinine |
| R185 | RG | Renogram | Kidney imaging | RG performed for obstruction |
| R186 | RH | Rhesus Factor | Blood antigen | RH typing before transfusion |
| R187 | RHD | Rheumatic Heart Disease | Heart valve disease | RHD diagnosed via echocardiography |
| R188 | RICE | Rest, Ice, Compression, Elevation | Injury management | RICE applied to sprain |
| R189 | RLL | Right Lower Lobe | Lung segment | Pneumonia detected in RLL |
| R190 | RUL | Right Upper Lobe | Lung segment | Lesion in RUL on X-ray |
| R191 | RLQ | Right Lower Quadrant | Abdominal region | RLQ pain evaluated for appendicitis |
| R192 | ROM | Range of Motion | Joint mobility | ROM assessed after surgery |
| R193 | RSV | Respiratory Syncytial Virus | Respiratory virus | RSV detected in infants |
| R194 | RT | Radiotherapy / Respiratory Therapist | Cancer treatment / Specialist | RT administered for tumor / RT assisted ventilation |
| R195 | RTA | Road Traffic Accident | Trauma type | Patient admitted after RTA |
| R196 | RBC | Red Blood Cells | Oxygen-carrying cells | RBC count measured in anemia |
| R197 | RBCs | Red Blood Cells | Blood component | RBC transfused in patient |
| R198 | RCVS | Reversible Cerebral Vasoconstriction Syndrome | Cerebrovascular disorder | RCVS diagnosed on angiography |
| R199 | RDS | Respiratory Distress Syndrome | Breathing disorder | Neonatal RDS treated with surfactant |
| R200 | Rf | Rheumatoid Factor | Autoantibody in RA | RF positive in patient |



