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A normal standardization mark is 10 mm high and 0.2 seconds long. The purpose of it is to make sure that the waves will be printed at the accurate height and speed of the EKG. If the height and speed are not correct, then the patient's EKG results could show falsely low, tall, long, or short waves. This could cause an incorrect diagnosis to be made.
To prevent the patient from getting shocked
Special Purpose: Special purpose computer are used for only specific or perticular task.Mostly computer are used by doctors. Like ECG computer are any computer which used for surgery. Some special computer are used for weather controlling or weather research, some used by army for deffence purpose.
An ECG is an electrocardiography. It is used to detect and record the electrical impulses of the heart. An ECG is non-invasive and may be used as a diagnostic tool to detect abnormalities.
ECG and EKG are the same used to map the electrical activity of heart
The ECG sign of subendocardial ischemia is ST segment depression. Note that ECG is used more now that EKG.
heart
V1
ELECTROCARDIOGRAPH
Right Leg-RL
A
kidney