+ Sortable table Abbreviation Meaning E ecstasy electrolytes Enterococcus epinephrine estradiol estrogen E1 estrone E2 estradiol EAC external acoustic meatus EACA epsilon-aminocaproic acid EAEC enteroadhesive Escherichia coli EAF enteric adherence factor EAM external auditory meatus EB epidermolysis bullosa EBRT external beam radiation therapy EBL estimated blood loss (see bleeding) EBM evidence-based medicine expressed breast milk EBT electron beam tomography EBV Epstein–Barr virus EC enteric coating ECC endocervical curettage ECD endocardial cushion defect ECF extracellular fluid enteric cytopathic human orphan ECG electrocardiogram ECM extracellular matrix ECHO enteric cytopathic human orphan virus ECI febris e causa ignota (normally written as febris E.C.I.) fever of unknown origin ECLS extracorporeal life support ECMO extracorporeal membrane oxygenation ECP emergency care practitioner ECT electroconvulsive therapy ECTR endoscopic carpal tunnel release ED eating disorder emergency department erectile dysfunction ectodermal dysplasia effective dose emotional distress EDC estimated date of confinement (at 40/40 weeks of pregnancy) EDD estimated date of delivery (at 40/40 weeks of pregnancy); expected date of delivery estimated date of discharge EDF end diastolic flow (describing the flow of blood through the umbilical artery) EDH epidural hematoma EDM esophageal Doppler monitor EDRF endothelium-derived relaxing factor aka nitric oxide EDTA ethylene-diamine-tetraacetic acid EDS Ehlers–Danlos syndrome EDV end-diastolic volume EEE eastern equine encephalitis EEG electroencephalogram EENT ears, eyes, nose, throat (see otolaryngology) EEX electrodiagnosis EF ejection fraction EFM electronic fetal monitoring, aka external fetal monitoring (cardiotocograph) EFS event-free survival EFW estimated fetal weight EGBUS external genitalia, Bartholin's glands, urethra & Skene's glands EGD esophagogastroduodenoscopy EGF epidermal growth factor EGPA eosinophilic granulomatosis with polyangiitis (formerly known as Churg–Strauss syndrome) EHEC enterohemorrhagic Escherichia coli EIEC enteroinvasive Escherichia coli EIA external iliac artery External iliac artery EIB Exercise Induced Bronchospasm EJ elbow jerk (triceps reflex) EKG electrocardiogram ELLSCS elective lower segment caesarean section ELISA enzyme-linked immunosorbent assay EM erythema multiforme EMB ethambutol endometrial biopsy or endomyocardial biopsy EmBx endometrial biopsy EMC encephalomyocarditis EMD early morning discovery electromechanical dissociation EMDEX essential medicines index EMF endomyocardial fibrosis EMG electromyography EMLSCS emergency lower segment Caesarean section EMS Emergency Medical Service(s) EMU early morning urine sample (being the most concentrated, generally used for pregnancy testing) Emul emulsion ENT ear, nose, and throat (see otolaryngology) EOB edge of bed EoL End-of-life (adjective) EoLC End-of-life care EOM extraocular muscles EOMI extraocular movements intact (see eye movement) EPCT estrogen-progesterone challenge test EPEC enteropathogenic Escherichia coli EPH edema, proteinuria, hypertension Epi epinephrine EPO erythropoietin EPS electrophysiology extrapyramidal syndromesEQEmpathy quotient ER emergency room ERCP endoscopic retrograde cholangiopancreatography ERM epiretinal membrane ERMS embryonal rhabdomyosarcoma ERT enzyme replacement therapy ESA erythropoiesis-stimulating agent ESD endoscopic submucosal dissection ESHAP etoposide, cisplatin, cytarabine, methylprednisolone (chemotherapy regimen for relapsed Non-Hodgkin lymphoma) ESI epidural steroid injection ESKD end-stage kidney disease ESL extracorporeal shockwave lithotripsy (also ESWL) (see lithotriptor); English as a second language (affects provider–patient communication) ESBL extended spectrum beta-lactamase (see also gram-negative bacteria) ESM ejection systolic murmur ESR erythrocyte sedimentation rate ESRFend-stage renal failure ESRD end-stage renal disease ESS empty sella syndrome enhanced support service EST endodermal sinus tumor ESV end-systolic volume ESWL extracorporeal shockwave lithotripsy (also ESL) (see lithotriptor) ET endothelin endotracheal embryo transfer Essential thrombocythemia ETEC enterotoxigenic Escherichia coli Etiol etiology ETOH ethanol (ethyl alcohol) ETS endoscopic thoracic sympathectomy ETT endotracheal tube EUA examination under anesthesia EUP extrauterine pregnancy EUS endoscopic ultrasonography EVA enlarged vestibular aqueduct EVAR endovascular aneurysm repair EVD external ventricular drain EVF erythrocyte volume fraction (see hematocrit) Ex-n previously; used for premature infants that have been born (ex-28 = born at 28 weeks gestation) Exam examination (for example, physical examination) Exp Lap exploratory laparotomy Ext extremities

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