Internal Medicine Initialisms

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Internal Medicine Alphabet-E

S. No	Initialism	Full Form	Short Explanation	Practical Example
E001	E&M	Evaluation and Management	Clinical services for patient assessment.	Physician billed under E&M codes.
E002	E2	Estradiol	Primary estrogen hormone.	E2 levels checked in infertility.
E003	E3	Estriol	Estrogen measured in pregnancy.	Low E3 linked with fetal anomalies.
E004	E4	Estrone	Weaker estrogen hormone.	E4 elevated in menopause therapy.
E005	EBV	Epstein–Barr Virus	Virus causing mononucleosis and linked to cancers.	EBV serology confirmed infection.
E006	ECG	Electrocardiogram	Test recording heart’s electrical activity.	ECG showed atrial fibrillation.
E007	Echo	Echocardiography	Ultrasound imaging of the heart.	Echo revealed mitral regurgitation.
E008	ECMO	Extracorporeal Membrane Oxygenation	Life-support technique for severe respiratory failure.	ECMO used in ARDS patient.
E009	ECT	Electroconvulsive Therapy	Psychiatric treatment using electrical stimulation.	ECT performed for severe depression.
E010	ED	Emergency Department	Hospital unit for acute care.	Patient rushed to ED with chest pain.
E011	EDH	Extradural Hematoma	Bleeding between skull and dura mater.	CT revealed EDH after head trauma.
E012	EDS	Ehlers–Danlos Syndrome	Connective tissue disorder with hyperflexibility.	Genetic test confirmed EDS.
E013	EEG	Electroencephalogram	Brain electrical activity recording.	EEG showed epileptiform discharges.
E014	EF	Ejection Fraction	Percentage of blood pumped by LV per beat.	EF measured at 35% in heart failure.
E015	EGA	Estimated Gestational Age	Approximate age of fetus in weeks.	Ultrasound measured EGA at 20 weeks.
E016	EGD	Esophagogastroduodenoscopy	Endoscopic visualization of upper GI tract.	EGD showed gastric ulcer.
E017	EHEC	Enterohemorrhagic Escherichia coli	Bacterial infection causing bloody diarrhea.	Stool tested positive for EHEC.
E018	EHL	Extensor Hallucis Longus	Muscle in the lower limb.	Weak EHL noted in foot drop.
E019	EIA	Enzyme Immunoassay	Lab technique for detecting antigens/antibodies.	EIA used in HIV screening.
E020	EICU	Emergency Intensive Care Unit	Specialized ICU for critical patients.	Patient admitted to EICU.
E021	EKG	Elektrokardiogramm (ECG)	German term, same as ECG.	EKG recorded tachycardia.
E022	ELISA	Enzyme-Linked Immunosorbent Assay	Lab test to detect antibodies/antigens.	ELISA confirmed HIV infection.
E023	EM	Electron Microscopy	High-resolution imaging technique.	EM revealed viral particles.
E024	EMA	Epithelial Membrane Antigen	Marker used in tumor pathology.	Biopsy stained positive for EMA.
E025	EMB	Endomyocardial Biopsy	Tissue sampling from heart muscle.	EMB performed for myocarditis.
E026	EMS	Emergency Medical Services	Pre-hospital care unit.	EMS transported trauma patient.
E027	EMT	Emergency Medical Technician	Certified professional for emergency care.	EMT administered CPR.
E028	ENA	Extractable Nuclear Antigen	Autoantibody panel used in rheumatology.	ENA positive in lupus.
E029	ENMG	Electroneuromyography	Diagnostic test for nerves and muscles.	ENMG confirmed neuropathy.
E030	ENT	Ear, Nose, Throat	Medical specialty.	ENT consult for sinusitis.
E031	EOA	Erosive Osteoarthritis	Severe type of osteoarthritis.	X-ray showed EOA changes.
E032	EOM	Extraocular Movements	Eye muscle functions.	EOM tested during neuro exam.
E033	EONS	Early-Onset Neonatal Sepsis	Sepsis in newborns within 72 hours of birth.	EONS treated with antibiotics.
E034	EOT	End of Treatment	Completion of medical therapy.	TB patient reached EOT successfully.
E035	EP	Ectopic Pregnancy	Implantation of pregnancy outside uterus.	Ultrasound confirmed EP in fallopian tube.
E036	EPA	Eicosapentaenoic Acid	Omega-3 fatty acid beneficial for heart.	EPA supplements prescribed.
E037	EPI	Epinephrine	Hormone and drug used in anaphylaxis.	EPI given during allergic shock.
E038	EPO	Erythropoietin	Hormone stimulating RBC production.	EPO therapy in CKD patient.
E039	EPS	Electrophysiology Study	Invasive test for heart rhythm disorders.	EPS performed for arrhythmia.
E040	ER	Emergency Room	Another term for ED.	Patient rushed to ER with stroke.
E041	ERCP	Endoscopic Retrograde Cholangiopancreatography	Endoscopic imaging of bile and pancreatic ducts.	ERCP removed bile duct stone.
E042	ERG	Electroretinogram	Test of retinal function.	ERG abnormal in retinitis pigmentosa.
E043	ERM	Epiretinal Membrane	Scar tissue on retina.	Surgery planned for ERM removal.
E044	ESR	Erythrocyte Sedimentation Rate	Inflammatory marker.	ESR elevated in rheumatoid arthritis.
E045	ESBL	Extended Spectrum Beta-Lactamase	Resistant bacterial enzyme.	ESBL-producing E. coli found.
E046	ESCC	Esophageal Squamous Cell Carcinoma	Malignancy of esophagus.	Biopsy confirmed ESCC.
E047	ESCR	Extended Spectrum Cephalosporin Resistance	Antibiotic resistance mechanism.	Culture revealed ESCR bacteria.
E048	ESD	Endoscopic Submucosal Dissection	Minimally invasive GI tumor removal.	ESD performed for gastric cancer.
E049	ESE	Exercise Stress Echocardiography	Echo test during exercise.	ESE showed ischemia.
E050	ESG	Endoscopic Sleeve Gastroplasty	Minimally invasive weight-loss procedure.	ESG performed for obesity.

S. No	Initialism	Full Form	Short Explanation	Practical Example
E051	ESH	European Society of Hypertension	Body issuing hypertension guidelines.	ESH guidelines followed in clinic.
E052	ESHRE	European Society of Human Reproduction & Embryology	Professional society for fertility medicine.	IVF standards from ESHRE.
E053	ESI	Epidural Steroid Injection	Pain management technique.	ESI given for lumbar radiculopathy.
E054	ESLD	End-Stage Liver Disease	Advanced liver failure.	Patient listed for transplant due to ESLD.
E055	ESN	European Society of Nephrology	Professional body for kidney specialists.	ESN conference attended by nephrologists.
E056	ESP	Electrosensory Potential	Neurophysiological test.	ESP measured in neurology lab.
E057	ESRD	End-Stage Renal Disease	Final stage of CKD requiring dialysis.	ESRD patient on hemodialysis.
E058	ESS	Epworth Sleepiness Scale	Questionnaire to measure sleepiness.	ESS score indicated sleep apnea.
E059	EST	Exercise Stress Test	Treadmill test for CAD.	EST showed ST depression.
E060	ESWL	Extracorporeal Shock Wave Lithotripsy	Non-invasive kidney stone treatment.	ESWL performed for renal stone.
E061	ET	Essential Tremor	Neurological disorder causing tremors.	Beta-blocker prescribed for ET.
E062	ETA	Endotracheal Aspiration	Procedure to collect airway secretions.	ETA sample sent for culture.
E063	ETCO₂	End-Tidal Carbon Dioxide	Measurement of exhaled CO₂.	ETCO₂ monitored during anesthesia.
E064	ETD	Eustachian Tube Dysfunction	Ear pressure regulation disorder.	ETD treated with decongestants.
E065	ETF	Eustachian Tube Function	Assessment of middle ear ventilation.	ETF test done in ENT clinic.
E066	ETN	Etanercept	Biologic drug for autoimmune diseases.	ETN used in RA treatment.
E067	ETOH	Ethanol (Alcohol)	Medical shorthand for alcohol.	Patient intoxicated with ETOH.
E068	ETS	Endoscopic Thoracic Sympathectomy	Surgery for hyperhidrosis.	ETS done for excessive sweating.
E069	ETU	Emergency Treatment Unit	Hospital acute care unit.	Patient stabilized in ETU.
E070	EUA	Examination Under Anesthesia	Diagnostic procedure under anesthesia.	EUA done for gynecological assessment.
E071	EUS	Endoscopic Ultrasound	High-resolution endoscopy with ultrasound.	EUS guided pancreatic biopsy.
E072	EVA	Endovascular Aneurysm Repair	Minimally invasive aortic aneurysm repair.	EVA performed for AAA.
E073	EVAR	Endovascular Aneurysm Repair	Same as EVA.	EVAR reduced aneurysm risk.
E074	EVF	Extracorporeal Veno-Femoral Bypass	Temporary circulatory support.	EVF used in cardiac surgery.
E075	EVL	Endoscopic Variceal Ligation	Treatment of esophageal varices.	EVL performed in cirrhosis patient.
E076	EVR	Everolimus	Immunosuppressant drug.	EVR given post-transplant.
E077	EVS	Endoscopic Variceal Sclerotherapy	Therapy for varices.	EVS performed after bleeding episode.
E078	EWGSOP	European Working Group on Sarcopenia in Older People	Defines sarcopenia criteria.	Diagnosis based on EWGSOP guidelines.
E079	EX	Examination	Clinical evaluation shorthand.	Chart noted “EX: stable vitals”.
E080	EXG	Electrooculography	Eye movement test.	EXG abnormal in macular disease.
E081	EXP	Expiration	Breathing phase when air leaves lungs.	EXP noted in spirometry.
E082	EXT	Extraction	Removal procedure.	Tooth EXT performed.
E083	EBM	Evidence-Based Medicine	Clinical practice based on research evidence.	Therapy chosen using EBM principles.
E084	EBMT	European Society for Blood & Marrow Transplant	Hematology transplant body.	Protocols from EBMT followed.
E085	EBRT	External Beam Radiotherapy	Radiation cancer treatment.	EBRT given for prostate cancer.
E086	EC	Esophageal Cancer	Malignancy of the esophagus.	EC confirmed by biopsy.
E087	ECC	Endocervical Curettage	Gynecological diagnostic procedure.	ECC showed dysplasia.
E088	ECCE	Extracapsular Cataract Extraction	Eye surgery technique.	ECCE replaced by phaco surgery.
E089	ECD	Extracranial Carotid Disease	Carotid artery narrowing.	Doppler showed ECD.
E090	ECF	Extracellular Fluid	Fluid outside cells.	ECF loss seen in dehydration.
E091	ECG-g	Gated ECG	Imaging-linked ECG for nuclear scans.	ECG-g used in cardiology.
E092	ECL	Enterochromaffin-Like Cells	Gastric hormone-secreting cells.	ECL hyperplasia linked to gastrin.
E093	ECM	Extracellular Matrix	Structural framework for cells.	ECM disruption in fibrosis.
E094	ECR	External Carotid Artery	Major neck artery.	ECR examined in angiography.
E095	ECTO	Ectopic	Abnormal location of organ/tissue.	ECTO pregnancy confirmed.
E096	EDTA	Ethylenediaminetetraacetic Acid	Anticoagulant in blood tubes.	EDTA vial used for CBC.
E097	EDV	End-Diastolic Volume	Cardiac filling volume.	Echo measured EDV.
E098	EEA	End-to-End Anastomosis	Surgical connection technique.	Bowel EEA performed.
E099	EEG-BF	EEG Biofeedback	Neurofeedback therapy.	EEG-BF used in epilepsy.
E100	EER	Estimated Energy Requirement	Nutritional value estimate.	EER calculated in diet chart.
E101	EFNS	European Federation of Neurological Societies	Neurology professional body.	EFNS guidelines followed.
E102	EFR	Expiratory Flow Rate	Pulmonary function test.	EFR reduced in asthma.
E103	EGA	Estimated Gestational Age	Fetal age calculation.	USG confirmed EGA.
E104	EGL	Extra-Gastrointestinal Lymphoma	Lymphoma outside GI tract.	EGL found in thyroid.
E105	EGM	Electrogram	Electrical recording of heart activity.	Intracardiac EGM reviewed.
E106	EGS	Emergency General Surgery	Acute surgical specialty.	Appendectomy under EGS.
E107	EGT	Esophagogastric Tube	Feeding tube placement.	EGT inserted in ICU.
E108	EHD	Endemic Hemorrhagic Disease	Viral or parasitic endemic bleeding disorder.	EHD outbreak reported.
E109	EHIT	Endothermal Heat-Induced Thrombosis	Thrombosis after varicose treatment.	EHIT monitored post-procedure.
E110	EHO	Echocardiographic Hemodynamic Observation	Echo-based hemodynamic study.	EHO documented LV function.
E111	EHR	Electronic Health Record	Digital patient health file.	Data entered into EHR.
E112	EHS	Exertional Heat Stroke	Heat-induced life-threatening condition.	Marathon runner had EHS.
E113	EIAED	Enzyme-Inducing Antiepileptic Drug	Drug interaction class.	Phenytoin is an EIAED.
E114	EIC	Endometrial Intraepithelial Carcinoma	Pre-invasive endometrial cancer.	Biopsy showed EIC.
E115	EIG	Endoscopic Injection of Glue	Variceal bleeding treatment.	EIG performed in GI bleed.
E116	EIN	Endometrial Intraepithelial Neoplasia	Precancerous endometrial lesion.	EIN confirmed on pathology.
E117	EIP	Extensor Indicis Proprius	Finger muscle.	EIP injury noted in exam.
E118	EIT	Electrical Impedance Tomography	Bedside lung imaging technique.	EIT used in ICU ventilation.
E119	EIU	Eye Irritation Unit	Ophthalmology measurement.	EIU score calculated.
E120	EIV	Endovenous Internal Valve	Venous valve concept.	EIV incompetence noted in DVT.
E121	EJD	Erythema Juvénile Diabeticum	Skin sign in juvenile diabetes.	EJD documented in exam.
E122	EKG-M	Modified ECG	ECG variant recording.	EKG-M performed.
E123	EKT	Extracorporeal Kidney Therapy	Another term for dialysis.	EKT initiated in AKI.
E124	ELD	Early Lung Disease	Early stage pulmonary pathology.	Spirometry showed ELD.
E125	ELF	Enhanced Liver Fibrosis Test	Blood biomarker test.	ELF score elevated in NASH.
E126	ELH	Endolymphatic Hydrops	Inner ear fluid disorder.	ELH diagnosed in Ménière’s disease.
E127	ELN	European LeukemiaNet	Guidelines for leukemia treatment.	CML treatment per ELN.
E128	ELOVL	Elongation of Very Long Chain Fatty Acids	Enzyme group in lipid metabolism.	ELOVL mutation studied.
E129	ELT	Endoluminal Therapy	Minimally invasive treatment method.	ELT used for varices.
E130	EMAST	Elevated Microsatellite Alterations at Selected Tetranucleotide Repeats	Genetic instability marker.	EMAST studied in colorectal cancer.
E131	EMDR	Eye Movement Desensitization & Reprocessing	PTSD psychotherapy method.	Patient received EMDR.
E132	EMF	Electromagnetic Field	Physical exposure relevant to health.	EMF safety monitored.
E133	EMG	Electromyography	Test for muscle activity.	EMG confirmed myopathy.
E134	EMI	Electromagnetic Interference	Device interference risk.	EMI affected pacemaker.
E135	EMR	Electronic Medical Record	Digital patient file (variant of EHR).	Notes updated in EMR.
E136	EMSA	Electrophoretic Mobility Shift Assay	Lab DNA-binding test.	EMSA showed protein-DNA binding.
E137	EMT-P	EMT-Paramedic	Advanced EMT certification.	EMT-P provided intubation.
E138	ENDO	Endocrinology	Medical specialty.	Patient referred to ENDO clinic.
E139	ENI	Extranodal Involvement	Lymphoma outside lymph nodes.	ENI seen in spleen.
E140	ENL	Erythema Nodosum Leprosum	Reactional state in leprosy.	ENL treated with thalidomide.
E141	ENP	Emergency Nurse Practitioner	Advanced practice nurse.	ENP treated minor injuries.
E142	ENR	Endoneurial Repair	Microsurgical nerve repair.	ENR performed in trauma.
E143	ENS	Enteric Nervous System	GI tract neural system.	ENS dysfunction in IBS.
E144	ENT-S	ENT Surgery	Surgical branch of ENT.	ENT-S performed sinus surgery.
E145	EO	Eosinophil	Type of WBC.	EO count elevated in allergy.
E146	EOC	Epithelial Ovarian Cancer	Malignant ovarian tumor.	Chemo started for EOC.
E147	EOG	Electrooculography	Eye electrical test.	EOG abnormal in retinopathy.
E148	EOL	End of Life	Care for terminal patients.	Patient placed on EOL care.
E149	EOMI	Extraocular Movements Intact	Clinical exam finding.	Chart: “EOMI, pupils reactive”.
E150	EOS	Eosinophilia	High eosinophil count.	EOS seen in asthma.
E151	EOTC	End of Treatment Completion	Therapy endpoint.	TB patient reached EOTC.
E152	EPA-A	Eicosapentaenoic Acid Analog	Omega-3 derivative drug.	EPA-A trial ongoing.
E153	EPB	Extensor Pollicis Brevis	Thumb muscle.	EPB tendon injured.
E154	EPC	Extramammary Paget’s Carcinoma	Rare skin cancer.	EPC confirmed on biopsy.
E155	EPD	Epidermal Dysplasia	Skin precancerous lesion.	EPD excised surgically.
E156	EPE	Extraprostatic Extension	Prostate cancer spread beyond capsule.	MRI showed EPE.
E157	EPF	Epidermal Proliferating Factor	Growth factor protein.	EPF studied in wound healing.
E158	EPG	Electrophoresis Pattern	Protein separation profile.	EPG showed M-band in myeloma.
E159	EPH	Eclampsia-Preeclampsia-Hypertension	Hypertensive disorders of pregnancy.	EPH syndrome noted.
E160	EPIB	Epibulbar Dermoid	Benign eye tumor.	EPIB excised surgically.
E161	EPL	Extensor Pollicis Longus	Thumb muscle.	EPL rupture noted.
E162	EPM	Equine Protozoal Myeloencephalitis	Zoonotic disease model.	EPM research relevant.
E163	EPOC	Exacerbation of Chronic Obstructive Pulmonary Disease	COPD worsening.	Hospitalization for EPOC.
E164	EPON	Epipapillary Optic Nerve	Ophthalmology term.	EPON swelling noted.
E165	EPP	Erythropoietic Protoporphyria	Rare porphyria subtype.	EPP diagnosed via porphyrin tests.
E166	EPR	Effective Pulmonary Resistance	Hemodynamic parameter.	EPR calculated on cath.
E167	EPSDT	Early & Periodic Screening, Diagnostic & Treatment	Pediatric preventive program.	EPSDT used in Medicaid care.
E168	EPT	Electrophysiologic Testing	Nerve conduction evaluation.	EPT used for polyneuropathy.
E169	EPU	Electrophysiology Unit	Cardiology subspecialty lab.	Ablation done in EPU.
E170	EQ-5D	EuroQol-5 Dimension	Quality of life assessment tool.	EQ-5D survey administered.
E171	ERA	Endometrial Receptivity Analysis	Fertility diagnostic test.	ERA guided embryo transfer.
E172	ERAS	Enhanced Recovery After Surgery	Perioperative care protocol.	ERAS pathway used in colectomy.
E173	ERCC	Excision Repair Cross-Complementation	DNA repair gene family.	ERCC mutation tested.
E174	ERCP-EUS	Combined ERCP & Endoscopic Ultrasound	Advanced GI imaging.	ERCP-EUS performed.
E175	ERFS	Extended Release Formulation System	Drug formulation.	ERFS tablets prescribed.
E176	ERK	Extracellular Signal-Regulated Kinase	Cell signaling protein.	ERK studied in cancer pathways.
E177	ERM-CS	Epiretinal Membrane with Central Scarring	Ophthalmology finding.	Surgery indicated for ERM-CS.
E178	ERN	European Reference Network	Medical collaboration network.	ERN guidelines followed.
E179	ERP	Event-Related Potential	Brain response in EEG.	ERP measured in cognitive tests.
E180	ERR	Estrogen-Related Receptor	Nuclear receptor family.	ERR targeted in drug design.
E181	ERS	European Respiratory Society	Pulmonology society.	ERS congress attended.
E182	ERSPC	European Randomized Study of Screening for Prostate Cancer	Landmark prostate screening trial.	ERSPC shaped PSA guidelines.
E183	ERV	Expiratory Reserve Volume	Lung capacity parameter.	ERV reduced in obesity.
E184	ESA	Erythropoiesis-Stimulating Agent	Drugs increasing RBC production.	ESA used in anemia.
E185	ESCMID	European Society of Clinical Microbiology & Infectious Diseases	Infection specialty body.	ESCMID guidelines used in ICU.
E186	ESLT	End-Stage Liver Transplant	Final liver replacement stage.	ESLT performed successfully.
E187	ESPEN	European Society for Clinical Nutrition & Metabolism	Nutrition medicine society.	ESPEN guidelines followed.
E188	ESR	Erythrocyte Sedimentation Rate	Inflammation marker.	ESR elevated in vasculitis.
E189	ESSS	Epworth Sleepiness Scale Score	Numerical sleepiness rating.	ESSS 14 suggested OSA.
E190	ESTRO	European Society for Radiotherapy & Oncology	Radiation oncology body.	ESTRO recommendations applied.
E191	ETG	Ethyl Glucuronide	Alcohol biomarker.	ETG tested for abstinence.
E192	ETH	Ethambutol	TB treatment drug.	ETH added in RIPE regimen.
E193	ETL	Extrathoracic Lesion	Lesion outside thorax.	CT showed ETL.
E194	ETN-A	Etanercept Biosimilar	Anti-TNF drug.	ETN-A prescribed in arthritis.
E195	ETW	Endotracheal Withdrawal	Airway management maneuver.	ETW done before extubation.
E196	EUA-B	Examination Under Anesthesia-Biopsy	Procedure for tissue sampling.	EUA-B performed for cervical lesion.
E197	EV-D68	Enterovirus D68	Respiratory viral pathogen.	EV-D68 outbreak in children.
E198	EVD	External Ventricular Drain	Neurosurgical CSF drainage.	EVD placed in hydrocephalus.
E199	EVH	Exercise Ventilation Hyperventilation Test	Pulmonary function challenge.	EVH done for asthma.
E200	EVR-L	Everolimus-Lung Formulation	mTOR inhibitor drug.	EVR-L trialled in lung cancer.