vPad-A1 OPERATORS MANUAL
4.2.8 QRS Detection
The QRS Detection feature generates standalone QRS complexes that act as triggers
for pulse detection and rate measurement.
Amplitude and Rate settings are provided, similar to NSR, though the Rate
selections are more limited. Artifact and Mode settings are not available.
Although the QRS duration (width of the QRS complex) is adjustable, R and S
waves have relative amplitudes according to specification defined in ANSI/AAMI
standard EC-13.
R wave amplitude 0.875 of the Amplitude setting
S wave amplitude negative 0.125 of the Amplitude
R wave up slope 0.4375 of the QRS duration setting
R wave down slope 0.5 of the QRS duration
S wave up slope 0.0625 of the QRS duration
Touching the QRS Duration button will display a table of preset values. This table
is a subset of the complete list:
From: 8 to 20 ms in steps of 2 ms; or
20 to 200 ms in steps of 10 ms
4.2.9 R-Wave Detection
Simpler than the QRS complex, the
R-wave Detection signal may also be used to
rate accuracy of a patient monitor. This is a simple triangular waveform with
adjustable
Rate, Amplitude, and Duration. When selected, the top of the screen will
appear as shown in
Figure 45
.
R-Wave Detection parameters behave in exactly the same manner as the QRS
Detection
parameters; the same Duration options are provided.
Figure 43
Figure 44
Figure 45
Manual Operation/Chapter 4 # Page 39
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