Internal Medicine Acronyms

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

Internal Medicine Alphabet – R

S. No	Acronyms	Full Form	Short Explanation	Practical Example
R001	RA	Rheumatoid Arthritis	Chronic autoimmune joint inflammation	RA treated with DMARDs
R002	RBC	Red Blood Cell	Oxygen-carrying blood cell	RBC count measured in CBC
R003	RBBB	Right Bundle Branch Block	ECG conduction abnormality	RBBB noted in cardiac evaluation
R004	RAI	Radioactive Iodine	Thyroid treatment or diagnostic	RAI therapy for hyperthyroidism
R005	RAAS	Renin-Angiotensin-Aldosterone System	Hormonal system regulating BP	RAAS blockers used in hypertension
R006	RALE	Radiographic Assessment of Lung Edema	CXR scoring system	RALE used in ARDS evaluation
R007	RAIU	Radioactive Iodine Uptake	Thyroid function test	RAIU measured in hyperthyroid patients
R008	RAO	Right Atrial Overload	ECG sign	RAO suggests right heart strain
R009	RAS	Renal Artery Stenosis	Narrowing of kidney arteries	RAS causes secondary hypertension
R010	RAT	Rapid Antigen Test	Quick diagnostic test	RAT used for COVID-19 detection
R011	RBCS	Red Blood Cell Sedimentation	Lab measurement	RBCS elevated in inflammation
R012	RCT	Randomized Controlled Trial	Clinical research study design	RCT conducted to test new drug efficacy
R013	RDW	Red Cell Distribution Width	Variation in RBC size	RDW elevated in anemia
R014	RE	Rheumatic Endocarditis	Heart valve inflammation	RE diagnosed via echocardiography
R015	RENAL	Risk, Efficacy, Nephrology, Assessment, Lab	Kidney function assessment tool	RENAL score used in AKI evaluation
R016	RF	Rheumatoid Factor	Autoantibody	RF positive in RA
R017	RFT	Renal Function Test	Kidney function evaluation	RFT includes creatinine, urea
R018	RH	Rhesus Factor	Blood group antigen	RH negative mothers may need Rho(D) immunoglobulin
R019	RHD	Rheumatic Heart Disease	Valvular damage from rheumatic fever	RHD monitored with echocardiography
R020	RIF	Rifampicin	Antibiotic	RIF used in tuberculosis treatment
R021	RIPC	Remote Ischemic Preconditioning	Protective strategy for heart	RIPC applied before cardiac surgery
R022	RL	Ringer Lactate	IV fluid	RL used for hydration
R023	RLE	Right Lower Extremity	Anatomical location	RLE swelling indicates DVT
R024	RMI	Regional Myocardial Infarction	Heart attack in specific area	RMI diagnosed via ECG and troponin
R025	RMS	Root Mean Square	Statistical measure	RMS used in EMG analysis
R026	RNA	Ribonucleic Acid	Genetic material	RNA extracted for PCR testing
R027	RNP	Ribonucleoprotein	Protein-RNA complex	RNP antibodies checked in SLE
R028	RO	Reverse Osmosis	Water purification	RO water used in hospital labs
R029	ROM	Range of Motion	Joint movement measurement	ROM assessed in physical therapy
R030	ROS	Review of Systems	Patient symptom assessment	ROS documented in history-taking
R031	RPE	Rate of Perceived Exertion	Exercise intensity measure	RPE used in cardiac rehab
R032	RPR	Rapid Plasma Reagin	Syphilis screening test	RPR positive in untreated syphilis
R033	RR	Respiratory Rate	Breaths per minute	RR measured in vital signs
R034	RRT	Rapid Response Team	Emergency hospital team	RRT activated for deteriorating patient
R035	RSV	Respiratory Syncytial Virus	Common viral infection	RSV causes bronchiolitis in infants
R036	RT	Radiotherapy / Respiratory Therapist	Cancer treatment or clinician	RT delivers targeted radiation
R037	RTX	Rituximab	Monoclonal antibody drug	RTX used in RA and lymphoma
R038	RUQ	Right Upper Quadrant	Abdominal location	RUQ pain may indicate cholecystitis
R039	RUS	Renal Ultrasound	Kidney imaging	RUS used in hydronephrosis evaluation
R040	RV	Right Ventricle	Heart chamber	RV dilation seen in pulmonary hypertension
R041	RVH	Right Ventricular Hypertrophy	Thickening of RV	RVH detected on ECG or echo
R042	Rx	Prescription	Medical order for medications	Rx written for antibiotics
R043	RVR	Rapid Ventricular Response	Heart rate in atrial fibrillation	RVR treated with rate control drugs
R044	RVP	Right Ventricular Pressure	Heart pressure measurement	RVP measured in catheterization
R045	RWMA	Regional Wall Motion Abnormality	Echocardiographic finding	RWMA indicates myocardial infarction
R046	RRR	Regular Rate and Rhythm	Normal cardiac rhythm	RRR noted in physical exam
R047	RSA	Respiratory Sinus Arrhythmia	Heart rate variation with breathing	RSA normal in healthy adults
R048	RPRT	Rapid Plasma Reagin Test	Syphilis diagnostic	RPRT positive in active infection
R049	RTA	Renal Tubular Acidosis	Kidney tubular disorder	RTA causes metabolic acidosis
R050	RT-PCR	Reverse Transcription PCR	RNA detection method	RT-PCR detects viral infections
R051	RCVS	Reversible Cerebral Vasoconstriction Syndrome	Neurological disorder	RCVS causes thunderclap headache
R052	RD	Registered Dietitian	Nutrition professional	RD advises patients on diet therapy
R053	RBBB	Right Bundle Branch Block	ECG conduction abnormality	RBBB seen in ECG
R054	RALE	Radiographic Assessment of Lung Edema	CXR scoring system	RALE applied in ARDS monitoring
R055	RASS	Richmond Agitation-Sedation Scale	ICU sedation assessment	RASS used for mechanically ventilated patients
R056	RAO	Right Atrial Overload	ECG sign of right heart strain	RAO detected in echocardiography
R057	RBG	Random Blood Glucose	Blood sugar measurement	RBG checked in diabetes screening
R058	RRT	Renal Replacement Therapy	Dialysis	RRT started in acute kidney injury
R059	RDS	Respiratory Distress Syndrome	Severe lung condition	RDS seen in premature infants
R060	RFTs	Renal Function Tests	Kidney function panel	RFTs include creatinine, BUN
R061	RAS	Renin-Angiotensin System	Hormonal system regulating BP	RAS blockers used in hypertension
R062	RBC	Red Blood Cell	Oxygen-carrying cell	RBC count measured in CBC
R063	RF	Rheumatoid Factor	Autoantibody for RA	RF elevated in RA patients
R064	RHD	Rheumatic Heart Disease	Heart valve damage from rheumatic fever	RHD monitored via echo
R065	RPR	Rapid Plasma Reagin	Syphilis screening test	RPR performed in prenatal care
R066	RAI	Radioactive Iodine	Thyroid diagnostic or therapy	RAI therapy for hyperthyroidism
R067	RVOT	Right Ventricular Outflow Tract	Heart anatomy	RVOT obstruction detected on echo
R068	RVH	Right Ventricular Hypertrophy	Thickened RV	RVH seen in pulmonary hypertension
R069	RUQ	Right Upper Quadrant	Abdominal region	RUQ pain indicates gallbladder disease
R070	RLE	Right Lower Extremity	Limb location	RLE edema suggests DVT
R071	RT	Radiotherapy / Respiratory Therapist	Cancer treatment or clinician	RT delivers radiation therapy
R072	RTX	Rituximab	Monoclonal antibody	RTX used in RA treatment
R073	RR	Respiratory Rate	Breaths per minute	RR measured in vital signs
R074	RRR	Regular Rate and Rhythm	Normal cardiac rhythm	RRR noted on examination
R075	RVR	Rapid Ventricular Response	Fast heart rate in AF	RVR controlled with beta-blockers

S. No	Acronyms	Full Form	Short Explanation	Practical Example
R076	RVP	Right Ventricular Pressure	Heart pressure measurement	RVP measured during cardiac catheterization
R077	RWMA	Regional Wall Motion Abnormality	Echocardiographic finding	RWMA indicates myocardial infarction
R078	RUL	Right Upper Lobe	Lung region	RUL consolidation seen in pneumonia
R079	RLL	Right Lower Lobe	Lung region	RLL infiltrate on chest X-ray
R080	RML	Right Middle Lobe	Lung region	RML pneumonia observed on imaging
R081	RAS	Renal Artery Stenosis	Narrowing of kidney arteries	RAS causes secondary hypertension
R082	RAAS	Renin-Angiotensin-Aldosterone System	Hormonal system regulating BP	RAAS blockers used in CKD
R083	RBCs	Red Blood Cells	Oxygen-carrying cells	RBCs counted in complete blood count
R084	RDW	Red Cell Distribution Width	Variation in RBC size	RDW elevated in iron deficiency anemia
R085	RFT	Renal Function Test	Measures kidney function	RFT includes creatinine and urea
R086	RPRT	Rapid Plasma Reagin Test	Syphilis screening	RPRT positive in active infection
R087	RALE	Radiographic Assessment of Lung Edema	CXR scoring system	RALE used in ARDS evaluation
R088	RASS	Richmond Agitation-Sedation Scale	ICU sedation scoring	RASS used for ventilated patients
R089	RAT	Rapid Antigen Test	Quick diagnostic test	RAT used for influenza or COVID-19
R090	RDS	Respiratory Distress Syndrome	Severe lung disorder	RDS seen in neonates
R091	RFTs	Renal Function Tests	Kidney assessment	RFTs monitored in CKD patients
R092	RV	Right Ventricle	Heart chamber	RV dilation seen in pulmonary hypertension
R093	RVH	Right Ventricular Hypertrophy	Thickened RV wall	RVH detected on ECG
R094	RBBB	Right Bundle Branch Block	ECG conduction abnormality	RBBB observed in cardiology clinic
R095	RAI	Radioactive Iodine	Thyroid diagnostic or therapy	RAI scan for hyperthyroidism
R096	RF	Rheumatoid Factor	Autoantibody	RF positive in rheumatoid arthritis
R097	RHD	Rheumatic Heart Disease	Heart valve damage from rheumatic fever	RHD monitored by echocardiography
R098	RIF	Rifampicin	Antibiotic	RIF used in tuberculosis therapy
R099	RIPC	Remote Ischemic Preconditioning	Cardiac protective strategy	RIPC applied before heart surgery
R100	RL	Ringer Lactate	IV fluid	RL given for dehydration
R101	RLE	Right Lower Extremity	Anatomical location	RLE edema may indicate DVT
R102	RMI	Regional Myocardial Infarction	Heart attack in a specific area	RMI diagnosed via ECG and troponin
R103	RMS	Root Mean Square	Statistical measurement	RMS used in EMG evaluation
R104	RNA	Ribonucleic Acid	Genetic material	RNA extracted for PCR
R105	RNP	Ribonucleoprotein	Protein-RNA complex	RNP antibodies checked in SLE
R106	RO	Reverse Osmosis	Water purification	RO water used in labs
R107	ROM	Range of Motion	Joint movement	ROM measured in physical therapy
R108	ROS	Review of Systems	Patient symptom checklist	ROS documented in patient history
R109	RPE	Rate of Perceived Exertion	Exercise intensity scale	RPE used in cardiac rehab
R110	RR	Respiratory Rate	Breaths per minute	RR measured in vital signs
R111	RRT	Rapid Response Team	Emergency hospital team	RRT called for deteriorating patient
R112	RSV	Respiratory Syncytial Virus	Common viral infection	RSV causes bronchiolitis in infants
R113	RT	Radiotherapy / Respiratory Therapist	Cancer treatment or clinician	RT delivers radiation therapy
R114	RTX	Rituximab	Monoclonal antibody	RTX used in RA or lymphoma
R115	RUQ	Right Upper Quadrant	Abdominal region	RUQ pain indicates cholecystitis
R116	RUS	Renal Ultrasound	Kidney imaging	RUS detects hydronephrosis
R117	RVOT	Right Ventricular Outflow Tract	Heart anatomy	RVOT obstruction seen on echo
R118	RVSP	Right Ventricular Systolic Pressure	Heart pressure measurement	RVSP measured in echocardiography
R119	RVEDP	Right Ventricular End-Diastolic Pressure	Heart pressure at diastole	RVEDP measured in catheterization
R120	RVEDV	Right Ventricular End-Diastolic Volume	Heart volume at diastole	RVEDV measured in echocardiography
R121	RVESV	Right Ventricular End-Systolic Volume	Heart volume at systole	RVESV measured in echo
R122	RVFAC	Right Ventricular Fractional Area Change	RV function measure	RVFAC evaluated in echo
R123	RVH	Right Ventricular Hypertrophy	RV wall thickening	RVH seen on ECG or echo
R124	RVM	Remote Ventricular Monitoring	Heart monitoring technology	RVM used in cardiology clinic
R125	RVR	Rapid Ventricular Response	Fast ventricular rate	RVR treated in atrial fibrillation
R126	RWMA	Regional Wall Motion Abnormality	Echocardiographic finding	RWMA indicates myocardial infarction
R127	RUL	Right Upper Lobe	Lung region	RUL infiltrate on X-ray
R128	RLL	Right Lower Lobe	Lung region	RLL pneumonia detected on imaging
R129	RML	Right Middle Lobe	Lung region	RML consolidation on chest X-ray
R130	Rx	Prescription	Medical order	Rx written for antibiotics
R131	RPR	Rapid Plasma Reagin	Syphilis screening test	RPR positive in active infection
R132	RAO	Right Atrial Overload	ECG sign	RAO indicates right heart strain
R133	RPRT	Rapid Plasma Reagin Test	Syphilis diagnostic	RPRT performed in prenatal screening
R134	RDS	Respiratory Distress Syndrome	Severe lung disease	RDS seen in neonates
R135	RFTs	Renal Function Tests	Kidney panel	RFTs include BUN, creatinine
R136	RAAS	Renin-Angiotensin-Aldosterone System	Hormonal regulation of BP	RAAS blockers prescribed in CKD
R137	RBC	Red Blood Cell	Oxygen carrier	RBC count measured in CBC
R138	RDW	Red Cell Distribution Width	Variation in RBC size	RDW elevated in anemia
R139	RF	Rheumatoid Factor	Autoantibody for RA	RF positive in RA patients
R140	RHD	Rheumatic Heart Disease	Heart valve damage	RHD monitored by echocardiography
R141	RAI	Radioactive Iodine	Thyroid diagnostic or therapy	RAI scan for hyperthyroidism
R142	RVOT	Right Ventricular Outflow Tract	Heart anatomy	RVOT obstruction detected on echo
R143	RVH	Right Ventricular Hypertrophy	Thickened RV	RVH on ECG indicates pulmonary HTN
R144	RUQ	Right Upper Quadrant	Abdominal location	RUQ pain indicates gallbladder disease
R145	RLE	Right Lower Extremity	Limb region	RLE edema suggests DVT
R146	RT	Radiotherapy / Respiratory Therapist	Cancer treatment or clinician	RT delivers radiation therapy
R147	RTX	Rituximab	Monoclonal antibody	RTX used in RA
R148	RR	Respiratory Rate	Breaths per minute	RR measured in vital signs
R149	RRR	Regular Rate and Rhythm	Normal cardiac rhythm	RRR noted on physical exam
R150	RVR	Rapid Ventricular Response	Fast heart rate	RVR treated with beta-blockers
R151	RVP	Right Ventricular Pressure	Heart pressure measurement	RVP measured during catheterization
R152	RWMA	Regional Wall Motion Abnormality	Echocardiography finding	RWMA indicates infarction
R153	RUL	Right Upper Lobe	Lung region	RUL consolidation on X-ray
R154	RLL	Right Lower Lobe	Lung region	RLL infiltrate detected
R155	RML	Right Middle Lobe	Lung region	RML pneumonia on imaging
R156	RPR	Rapid Plasma Reagin	Syphilis test	RPR positive in active infection
R157	RAO	Right Atrial Overload	ECG sign	RAO seen in right heart strain
R158	RDS	Respiratory Distress Syndrome	Severe lung disease	RDS in neonates
R159	RFT	Renal Function Test	Kidney function panel	RFT monitored in CKD
R160	RAS	Renal Artery Stenosis	Narrowing of renal arteries	RAS causes secondary hypertension
R161	RAAS	Renin-Angiotensin-Aldosterone System	BP regulation system	RAAS inhibitors used in CKD
R162	RBC	Red Blood Cell	Oxygen-carrying cell	RBC count in CBC
R163	RF	Rheumatoid Factor	Autoantibody	RF positive in RA
R164	RHD	Rheumatic Heart Disease	Heart valve damage	RHD monitored by echo
R165	RAI	Radioactive Iodine	Thyroid imaging/therapy	RAI therapy for hyperthyroidism
R166	RVOT	Right Ventricular Outflow Tract	Heart anatomy	RVOT obstruction detected on echo
R167	RVH	Right Ventricular Hypertrophy	Thick RV wall	RVH on ECG in pulmonary HTN
R168	RUQ	Right Upper Quadrant	Abdominal region	RUQ pain indicates gallbladder issue
R169	RLE	Right Lower Extremity	Limb region	RLE edema suggests DVT
R170	RT	Radiotherapy / Respiratory Therapist	Cancer treatment or clinician	RT delivers radiation therapy
R171	RTX	Rituximab	Monoclonal antibody	RTX used in RA treatment
R172	RR	Respiratory Rate	Breaths per minute	RR measured in vital signs
R173	RRR	Regular Rate and Rhythm	Normal cardiac rhythm	RRR noted on physical exam
R174	RVR	Rapid Ventricular Response	Fast heart rate	RVR treated with beta-blockers
R175	RVP	Right Ventricular Pressure	Heart measurement	RVP measured in catheterization
R176	RWMA	Regional Wall Motion Abnormality	Echocardiographic finding	RWMA indicates infarction
R177	RUL	Right Upper Lobe	Lung region	RUL consolidation on imaging
R178	RLL	Right Lower Lobe	Lung region	RLL infiltrate on chest X-ray
R179	RML	Right Middle Lobe	Lung region	RML pneumonia detected on imaging
R180	Rx	Prescription	Medical order	Rx written for antibiotics
R181	RPR	Rapid Plasma Reagin	Syphilis test	RPR positive in infection
R182	RAO	Right Atrial Overload	ECG sign	RAO seen in right heart strain
R183	RPRT	Rapid Plasma Reagin Test	Syphilis diagnostic	RPRT performed in prenatal screening
R184	RDS	Respiratory Distress Syndrome	Severe lung disorder	RDS in neonates
R185	RFTs	Renal Function Tests	Kidney function panel	RFTs include creatinine, BUN
R186	RAAS	Renin-Angiotensin-Aldosterone System	BP regulatory system	RAAS blockers used in hypertension
R187	RBC	Red Blood Cell	Oxygen carrier	RBC counted in CBC
R188	RDW	Red Cell Distribution Width	RBC size variation	RDW elevated in iron deficiency
R189	RF	Rheumatoid Factor	Autoantibody	RF elevated in RA
R190	RHD	Rheumatic Heart Disease	Heart valve damage	RHD monitored with echo
R191	RAI	Radioactive Iodine	Thyroid scan/therapy	RAI therapy for hyperthyroidism
R192	RVOT	Right Ventricular Outflow Tract	Heart anatomy	RVOT obstruction on echo
R193	RVH	Right Ventricular Hypertrophy	Thick RV wall	RVH seen on ECG
R194	RUQ	Right Upper Quadrant	Abdominal region	RUQ pain indicates gallbladder disease
R195	RLE	Right Lower Extremity	Limb location	RLE edema suggests DVT
R196	RT	Radiotherapy / Respiratory Therapist	Cancer treatment or clinician	RT delivers radiation therapy
R197	RTX	Rituximab	Monoclonal antibody	RTX used in RA or lymphoma
R198	RR	Respiratory Rate	Breaths per minute	RR measured in vital signs
R199	RRR	Regular Rate and Rhythm	Normal cardiac rhythm	RRR noted on examination
R200	RVR	Rapid Ventricular Response	Fast heart rate in AF	RVR controlled with medications