Final answer:
The standard speed for an EKG machine during calibration is 25 mm/sec. The ECG produced is critical for analyzing heart function. Continuous monitoring can be achieved using a Holter monitor.
Step-by-step explanation:
The standard speed of the recording for calibrating an EKG (electrocardiogram) machine is 25 mm/sec. This speed refers to how fast the EKG paper runs through the machine, which subsequently affects how the heart's electrical activity is plotted on the paper. The ECG provides a detailed picture of heart function by using variations of leads, with the 12-lead electrocardiograph being one of the most informative configurations, utilizing 10 electrodes placed on the skin. Continuous monitoring over longer periods is often accomplished with a Holter monitor, a portable device worn by the patient.