LOW QRS VOLTAGE:

 

 

An ECG finding in which either:

•All of the QRS complexes in the limb leads are < 5 mm tall (from the top of the R wave to the bottom of the S wave) or

•All of the QRS complexes in the chest leads are < 10 mm tall (from the top of the R wave to the bottom of the S wave).

 

Can be associated with cardiac emergencies like large pericardial effusions, cardiac tamponade, tension pneumothorax, extensive myocardial infarction, acute myocarditis, severe hypothyroidism and others.

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