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Which of the following are true about ECG machines?
They use electrodes.
They are used to assist doctors in the diagnosis of possible heart problems.
They use magnets to produce images of soft tissues.
They are never used while a patient isexercising.
An electrocardiogram (ECG or EKG) <u>records the electrical signal from your heart to check for different heart conditions.</u> <u>Electrodes are placed on your chest to record your heart's electrical signals</u>, which cause your heart to beat. The signals are shown as waves on an attached computer monitor or printer.
