Electrode Quick Reference: A conductive point of delivery or return of an electrical charge.

Advanced Reference: Electrodes are commonly referred to within the theatre as the stick dots for applying a 3-lead ECG to the patient's chest wall. Each electrode provides a connection between the patient and the machine interpreting the electrical activity of the heart. Further examples of electrodes include those used for EEG, ECT and the grounding plate for diathermy is sometimes referred to as an electrode.

Electrolysis Quick Reference: (elec-trol-a-sis) Chemical changes brought about by means of electricity. Also refers to a process involving hair removal.

Advanced Reference: An example is the passing of electricity through water which decomposes/separates into oxygen and hydrogen.

Electrolyte Quick Reference: (elec-tro-lite) A solution which is capable of conducting electricity. A substance that forms a solution through which an electric current can be passed because the molecules involved separate into ions, i.e. groups of atoms with an electrical charge; the cations being attracted to the negative electrode and the anions to the positive.

Advanced Reference: Ions are formed when a compound disassociates in a solution, e.g. NaCl > Na+ + Cl". The most common being sodium, potassium, calcium, magnesium. The resultant solutions have the ability to conduct electricity, hence the term, electrolyte.

Electromagnetic Quick Reference: Pertaining to magnetism that is induced by an electric current.

Advanced Reference: Involves radiation such as microwaves, X-rays, radio waves, etc.

Emaciation Quick Reference: (em-ace-ea-shun) Indicates extreme wasting of body tissues.

Advanced Reference: Extreme loss of body weight. Malnourishment. Seen in patients suffering chronic disease and elderly patients admitted for surgery who are deplete in fluids and nourishment.

Embolism Quick Reference: (em-bo-lisem) Blocking of a blood vessel by material carried in the bloodstream and can lead to blockage elsewhere within the vascular system, i.e. pulmonary embolism.

Advanced Reference: The material (embolus) can be a blood clot, fat, air and less commonly amniotic fluid, fragment from catheter, etc. Removal is termed an embolectomy, usually carried out with a long catheter inserted into the vessel which has an inflatable balloon designed to pass the obstruction in the deflated position, then inflated with saline for extraction.

EMD Quick Reference: Electromechanical dissociation, also termed pulseless electrical activity (PEA).

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