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Gain may not be exactly the right word but the standard transfer function is that 1 millivolt between electrodes causes a 10 mm deflection of the pen on the graph paper.
Some machines have selectable gains, these are on top of this transfer function and are not standard nor are they usually specified in any absolute scale. They are called things like "normal" and "high" which doesn't tell you much.
Amplifying a millivolt to produce a 1cm deflection is not really very hard. The hard part is digging the actual EKG signal out of all of the noise. There is sub-hz noise from patient motion, such as breathing, change of skin resistance from perspiration and/or evaporation, etc. There are myoelectric signals which are really difficult since the EKG is basically a myoelectric signal anyway. There is always a lot of line frequency (50/60 Hz) noise. Overall, bandwidth is around .05 to 150 Hz.
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∙ 11y ago
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When will a V wave be seen on the normal EKG tracing?
Yes, a V wave will be seen on a normal EKG tracing. A V wave can signal a lot of things in an EKG, but what it means will be up to the person reading the EKG and the person's reason for the EKG.
What does EKG mean?
Close to normal, but not quite.
Can you still have heart problem with normal ekg?
yes
What does EKG showed NSR mean?
normal sinus rhythm
Normal electrical recovery of the ventricles is represented on the ekg by the?
T waves
What is normal sensitivity level for running ekg?
1 mV
Is 100 beats per minute normal in an ekg?
100 beats per minute is considered the upper limit of normal.
What is persistent posterobasal forces means in EKG?
Persistent posterobasal forces in an EKG has to do with how the heart directs electrical impulses around itself. You should discuss this with your cardiologist, however it is usually a normal variant.
What is normal gain in cost accounting?
there is no such thing as normal gain in accountancy terms
What does a P wave record on an EKG?
The P wave represents atrial depolarization (they contract). In a normal EKG, the P-wave precedes the QRS complex. It looks like a small bump upwards from the baseline.
How can pre-opt tests like EKG be valid if a patient is under a lot of stress?
The purpose of an EKG is to determine whether certain cardiac functions are normal, or if they will require support during the surgery. Stress is not an issue in these tests.
When do you standardize an EKG?
before and after you run EKG
