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- Published on: 23 November 2015
- Published on: 23 November 2015
- Published on: 23 November 2015ECG wave amplitudes and measurementsShow More
Dear Editor,
Measurements of amplitude and duration of waves or complexes on the electrocardiogram are frequently bedevilled by issues of scale, calibration and paper-speed of recordings.1 The potential for non- standard recordings strengthens the case for using units of measurement unaltered by the scale i.e. millivolts (mV) and seconds instead of millimetres (mm) of amplitude or duration respectively. We have...
Conflict of Interest:
None declared. - Published on: 23 November 2015Response to Dr Okreglicki
Dear Editor,
Dr Okreglicki correctly identifies an error in the placement of the decimal point in relation to the maximum P wave amplitude in lead 2. As he says the upper limit of normal for P wave amplitude in lead 2 is 0.25mV. Amplitudes in all tables are in millivolts. Apologies for the omission of this information from table 1.
Conflict of Interest:
None declared.