Monitor mode - ECG
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Physics principle used
ECG is the measurement of electrical potential generated by the depolarization and
re-polarization of heart cells, generating the bioelectrical impulse responsible for the
heart's contraction. Heart impulses are detectable on the body surface by applying
electrodes. Each electrode's potential is amplified and processed by the heart
monitor, displayed on the screen and then used to calculate the heart's frequency
(BPM).
The heart cycle period is the elapsed time from any point in the ECG cycle to the
corresponding point in the next cycle. For example, the interval “R-R” is the time
between two successive “R” waves. Using this measurement, it is possible to
determine the beats per minute (BPM).
Warnings
Use only original Instramed cables and conductors. Other ECG cables may
impede defibrillation or not work correctly.
If you suspect a cable or conductor is ruptured, avoid its use due to possible
risk to operator.
If the patient has a pacemaker, do not rely solely on the equipment alarms.
Keep the patient under observation.
The cardiac frequency measurement can be affected in the presence of a
transcutaneous pacemaker.
The ECG electrodes are disposable and single-use and cannot be reused
under any circumstances.
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