Standard Calibration and ECG Paper

Front

A large box on ECG paper is made up of ____ small boxes.

Back

5

Front

______ is the standard speed for the paper to run on the ECG.

Back

25 mm/second

Front

What is the standard gain (amplitude) setting for an ECG machine?

Back

10 mm/mV

Front

When the patient’s heart rate is very slow or very fast, the provider may ask you to change the _____________ to make the reading easier for him/her to interpret.

Back

paper speed

Front

When the patient’s heart rate shows very small or very large waves, the provider may ask you to change the _____________to enhance their visibility and make the tracing easier to interpret.

Back

amplitude

Front

If the rectangle at the beginning of the ecg is 10 mm tall by 5 mm wide this shows that the ECG machine is calibrated to show a ___ and ___.

Back

standard amplitude, standard speed

Front

What effect does decreasing the paper speed have on the appearance of the ECG waves?

Back

waves are closer together

Front

Using the 1500 method, if there are 15 small boxes between two R waves, what is the heart rate?

Back

100 bpm

Front

With the 300 method, if there are 4 large boxes between two R waves, what is the heart rate?

Back

75 bpm

Front

When using the 6-second method, if there are 8 QRS complexes in a 6-second strip, what is the heart rate?

Back

80 bpm