Welch Allyn Means ECG Physicians Manual for CP Series Electrocardiographs - User Manual User Manual
Page 9
MEANS Physicians Manual
Welch Allyn
9
The parameters that are computed for each lead separately, are shown in Table 2. All
amplitudes are taken as absolute values.
Table 2. Lead-dependent parameters for the contour classification.
Name
Description
Delta wave
Slurring of the initial part of the QRS complex.
Negative J amplitude
Amplitude of a negative J point (in µV).
Positive J amplitude
Amplitude of a positive J point (in µV).
Negative P amplitude
Amplitude of the negative deflection of the P wave (in µV).
Positive P amplitude
Amplitude of the positive deflection of the P wave (in µV).
P notch
Notch in the positive deflection of the P wave.
Q amplitude
Maximum amplitude of the Q wave (in µV).
Q duration
Duration of the Q wave (in ms).
negative QRS
amplitude
Amplitude of the largest negative deflection of the QRS
complex (in µV).
positive QRS
amplitude
Amplitude of the largest positive deflection of the QRS
complex (in µV).
top-top QRS amplitude
Amplitude of largest positive plus largest negative deflections
of the QRS complex (in µV).
QRS area
Area under the positive deflections of the QRS complex
minus area under the negative deflections of the QRS
complex (in mVms).
Q/R ratio
Ratio of the maximum amplitudes of the Q and R waves.
QS pattern
QRS complex consisting of a Q wave only.
R amplitude
Maximum amplitude of the R wave (in µV).
R duration
Duration of the R wave (in ms).
R notch
Notch in the positive deflection of the QRS complex.
R
amplitude
Maximum amplitude of the R
wave (in µV).
R/S ratio
Ratio of the maximum amplitudes of the R and S waves.
S amplitude
Maximum amplitude of the S wave (in µV).
S duration
Duration of the S wave (in ms).
S
amplitude
Maximum amplitude of the S
wave (in µV).
ST slope
Slope of the ST segment (in µV/100 ms).
Negative T amplitude
Amplitude of the negative deflection of the T wave (in µV).
Positive T amplitude
Amplitude of the positive deflection of the T wave (in µV).