Diagnostic criteria

  Normal ECG is recorded at a paper speed of 25mm/second horizontally.

  During paper squeeze, the sweep speed of the ECG paper decreases for a very short time.

      If coincident with the paper squeeze, P wave time, PR interval, QRS width or QT interval will decrease.

  If the paper squeze occurs only during isoelectric baseline, then the next heart beat will be perceived as

      premature.

  If extra information displayed on the ECG (name, surname, date, time, etc) is coincident with the paper

      squeeze, the letter(s) or digit(s) will be displayed erroneously. This finding will also support the diagnosis.





ECG 1. Paper squeeze artifact:
the P wave time, PR interval and QRS width of the 5th beat from the left is decreased when
compared with other beats.
There is no cardiac pathology to explain this observation. Additionally, the two digits of the ECG
time showing the hour
is displayed erroneously. On the other hand the digits showing the minutes and seconds are displayed
correctly.

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ECG 2.
Paper squeeze artifact. Slow paper motion results in narrow QRS complexes.
Simultaneously, some letters of the comment are also written improperly.

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ECG 3.
Paper squeeze artifact. Slow paper motion results in narrow and pointed T waves.

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ECG 4.
Paper squeeze artifact from another patient's ECG is seen above.
Slow paper motion results in
deformed T waves.
Simultaneously, some letters of the comment (at the upper part of the paper) are also printed erroneously.

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ECG 5.
Paper squeeze artifact from another patient's ECG is seen above.
Slow paper motion results in
deformed P wave and QRS complex.
Simultaneously, some numbers are also printed erroneously.

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ECG 6.
Paper squeeze artifact from another patient's ECG is seen above.
Slow paper motion results in
deformed QRS complex (abnormally narrow QRS).
Simultaneously, some letters of the comment (at the upper part of the paper) are also printed erroneously.

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ECG 7.
Paper squeeze artifact from another patient's ECG is seen above.
Slow paper motion results in
deformed T waves.
Simultaneously, some letters of the comment (at the upper part of the paper) are also printed erroneously.

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ECG 8.
Paper squeeze artifact from another patient's ECG is seen above.
Slow paper motion results in
deformed P waves.
Simultaneously, some letters of the comment (at the upper part of the paper) are also printed erroneously.

Click here for a more detailed ECG





ECG 9.
Paper squeeze artifact from another patient's ECG is seen above.
Slow paper motion results in
deformed T and P waves.
Simultaneously, some letters of the comment (at the upper part of the paper) are also printed erroneously.

Click here for a more detailed ECG