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AT-1 User Guide Art. No. 2. 510 270
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AT-1 User Guide Art. No. 2. 510 270
Measurements
The Schiller measurement program provides a table with lead specific measurement results. In 12 columns i.e. one for each lead, the amplitude
values of P, Q, R ,S, T and R', S', T' waves, the J point and the ST integral are listed in millivolts. The amplitude measurements relate to a
reference value that corresponds to the signal value immediately before the beginning of the QRS. For P measurement the zero value at Pon
is determined as a mean value in an interval from Pon -20ms to Pon inclusive. The duration of the Q, R, S, R' and S' waves are given in
milliseconds (rounded to 2ms). The amplitudes are given in mV (rounded to 0.01mV)
Parameter
Description
Measurement unit
P
amplitude of P wave
mV
Q
amplitude of Q wave
mV
Qd
duration of Q wave
ms
R
amplitude of R wave
mV
Rd
duration of R wave
ms
S
amplitude of S wave
mV
Sd
duration of S wave
ms
R'
amplitude of R' wave
mV
R'd
duration of R' wave
ms
S'
amplitude of S' wave
mV
S'd
duration of S' wave
ms
J
amplitude of J point
mV
ST
ST integral : averaged amplitude of the ST segment
( from the J point to half the distance between the
J-point and max. T wave)
mV
T
amplitude of the T wave
mV
T'
amplitude of the T' wave (in case of
biphasic T wave)
mV
Measurements
The Schiller measurement program provides a table with lead specific measurement results. In 12 columns i.e. one for each lead, the amplitude
values of P, Q, R ,S, T and R', S', T' waves, the J point and the ST integral are listed in millivolts. The amplitude measurements relate to a
reference value that corresponds to the signal value immediately before the beginning of the QRS. For P measurement the zero value at Pon
is determined as a mean value in an interval from Pon -20ms to Pon inclusive. The duration of the Q, R, S, R' and S' waves are given in
milliseconds (rounded to 2ms). The amplitudes are given in mV (rounded to 0.01mV)
Parameter
Description
Measurement unit
P
amplitude of P wave
mV
Q
amplitude of Q wave
mV
Qd
duration of Q wave
ms
R
amplitude of R wave
mV
Rd
duration of R wave
ms
S
amplitude of S wave
mV
Sd
duration of S wave
ms
R'
amplitude of R' wave
mV
R'd
duration of R' wave
ms
S'
amplitude of S' wave
mV
S'd
duration of S' wave
ms
J
amplitude of J point
mV
ST
ST integral : averaged amplitude of the ST segment
( from the J point to half the distance between the
J-point and max. T wave)
mV
T
amplitude of the T wave
mV
T'
amplitude of the T' wave (in case of
biphasic T wave)
mV
Summary of Contents for AT-1
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