Medical Assistant Chapter 26: Principles of Electrocardiography

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10 Terms

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arrhythmia

An abnormal heart rate or rhythm.

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artifact

A substance, structure, or event that does not naturally occur in a situation. Examples include interference, or electrical "garbage" on an ECG, or crystals, lint, or contamination of a staining technique.

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bipolar

Having two poles or electrical charges.

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caliper

A pocket-sized tool used for measuring the height and width of the ECG waves and intervals.

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dextrocardia

The condition in which the heart is located on the right side of the chest, and the apex is pointing to the right.

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echocardiography (ECHO)

The use of ultrasonic waves directed through the heart to study the structure and motion of the heart. The visual record producedis called an echocardiogram.

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electrocardiogram (ECG, EKG)

A record or recording of electrical impulses of the heart as produced by an electrocardiograph.

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electrodes

Adhesive patches that conduct electricity from the body to the ECG machine wires.

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ion

An electrically charged atom, or the smallest component of an element.

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unipolar

Having one pole or electrical charge.