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E. Coli

A type of bacteria that can cause gastrointestinal infections.

EAM

An abbreviation for external auditory meatus.

eardrum

The circular membrane that separates the outer ear from the inner ear. The eardrum vibrates in response to sound waves, conducting the sound to the inner ear.

EBV

An abbreviation for Epstein–Barr virus

ECG

The abbreviation for electrocardiogram, a tracing of the electrical activity of the heart to help in the diagnosis of heart disease.

echocardiogram

An ultrasound examination of the heart as it is pumping. Also known as an 'echo'.

echocardiography

The use of ultrasound to examine the heart as it is pumping.

eclampsia

A serious disease occurring in late pregnancy causing seizures and sometimes coma. It usually follows pre-eclampsia.

ectopic

Displaced from its normal position in the body. Also used to refer to ectopic heartbeats.

ectopic heartbeats

Occasional extra or skipped heartbeats within an otherwise normal rhythm

ectopic pregnancy

A pregnancy that develops outside the uterus, most often in the fallopian tube.

ectropion

The turning outwards of the eyelid so that the inner surface is exposed.

eczema

An inflammation of the skin, usually causing itching and sometimes scaling and blisters.

edrophonium test

A diagnostic test for myasthenia gravis, a rare disorder in which the muscles become weak and tire easily.

EEG

The abbreviation for electroencephalogram, a method of recording the activity of the brain.

effusion

The process by which fluid escapes.

Ehlers- Danlos syndrome

A group of inherited connective tissue disorders.

eicosapentaenoic acid

An essential omega-3 fatty acid found in oily fish.

ejaculation

The discharge of semen from a man’s penis at the time of sexual climax.

electrocardiogram

A tracing of the electrical activity of the heart.

electrocardiography

A technique for tracing the electrical activity of the heart. Abbreviated to ECG.

electrocautery

A routine surgical procedure to remove unwanted or harmful tissue.

electrolyte

A solution containing ions (charged atoms such as sodium and potassium), or the ions themselves.

electrolytes

A substance whose molecules breakdown into its constituent ions when dissolved.