electrode (redirected from calomel electrode)

electrode /elec·trode/ (e-lek´trōd) a conductor or medium by which an electric current is conducted to or from any medium, such as a cell, body, solution, or apparatus.

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active electrode  in electromyography, an exploring e.

calomel electrode  one capable of both collecting and giving up chloride ions in neutral or acidic aqueous media, consisting of mercury in contact with mercurous chloride; used as a reference electrode in pH measurements.

esophageal electrode , esophageal pill electrode a pill electrode that lodges in the esophagus at the level of the atrium to obtain electrograms and deliver pacing stimuli.

exploring electrode  in electrodiagnosis, that placed nearest to the site of bioelectric activity being recorded, determining the potential in that localized area.

ground electrode  one that is connected to a ground.

indifferent electrode  reference e.

needle electrode  a thin, cylindrical electrode with an outer shaft beveled to a sharp point, enclosing a wire or series of wires.

patch electrode  a tiny electrode with a blunt tip that is used in studies of membrane potentials.

pill electrode  an electrode usually encased in a gelatin capsule and attached to a flexible wire so that it can be swallowed.

recording electrode  that used to measure electric potential change in body tissue; for recording, two electrodes must be used, the exploring e. and the reference e.

reference electrode  an electrode placed at a site remote from the source of recorded activity, so that its potential is assumed to be negligible or constant.

stimulating electrode  one used to apply electric current to tissue.

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e·lec·trode (-lktrd)

n.

1. A solid electric conductor through which an electric current enters or leaves an electrolytic cell or other medium.

2. A collector or emitter of electric charge or of electric-charge carriers, as in a semiconducting device.

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Electrode

Medium for conducting an electrical current-in this case, platinum wires.

Mentioned in: Electrophysiology Study of the Heart

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electrode

[ilek′trōd]

Etymology: Gk, elektron + hodos, way

1 a contact for the induction or detection of electrical activity.

2 a medium for conducting an electrical current from the body to physiologic monitoring equipment.

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electrode (ēlek´trōd),

n an instrument with a point or a surface from which a current can be discharged into or received from the body of a patient or a solution.

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electrode

either of two terminals of an electrically conducting system or cell.

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active electrode

therapeutic electrode.

calomel electrode

one capable of both collecting and giving up chloride ions in neutral or acidic aqueous media, consisting of mercury in contact with mercurous chloride; used as a reference electrode in pH measurements.

depolarizing electrode

an electrode that has a resistance greater than that of the portion of the body enclosed in the circuit.

hydrogen electrode

an electrode made by depositing platinum black on platinum and then allowing it to absorb hydrogen gas to saturation; used in determination of hydrogen ion concentration.

indifferent electrode

one larger than a therapeutic electrode, dispersing electrical stimulation over a larger area.

point electrode

an electrode having on one end a metallic point; used in applying current.

therapeutic electrode

one smaller than an indifferent electrode, producing electrical stimulation in a concentrated area; called also active electrode.

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electrode

Cardiac pacing A part of an electric conductor through which a current enters or leaves; uninsulated conductive part of a pacing lead or a unipolar implantable pulse generator's casing which makes electrical contact with tissue; electrodes are used to record the electric activity of contracting muscles; electromyographic data is collected by surface electrodes, fine wire and needle electrodes. See Ring electrode, SilverBullet^™ electrode, Tip electrode.