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Measuring and Displaying Parameters
Specifications
12-5
ECG
Standards
Standards
Meets the performance standards of ANSI/AAMI EC13-1992. Instead of a 1 mV standardizing voltage
(section 3.2.2.9), a fixed, 1 cm reference bar is always present in the ECG display, along with the ECG
size setting expressed in mV/cm. The following information references particular sections of ANSI/
AAMI EC13-1992.
Respiration, leads-off
sensing waveform.
3.1.2.1 (b)
A 85 kHz square wave is used to inject 50 µA p-p differentially between RA
and LL.
Tall T-wave rejection.
3.1.2.1 (c)
T-wave of 0.8 mV amplitude will not affect heart rate determination.
Heart rate averaging.
3.1.2.1 (d)
Averages six of the most recent eight detected R-R intervals excluding the
longest and shortest of the eight intervals.
Response to irregular
rhythms
3.1.2.1 (e)
a) Ventricular bigeminy - 80 b/min rhythm.
b) Slow alternating ventricular bigeminy - 30 b/min
c) Rapid alternating ventricular bigeminy - 80 to 103 b/min
d) Bi-directional systoles - 90 to 105 b/min
Heart rate meter
response time.
3.1.2.1 (f)
a) Change from 80 to 120 b/min: 4 to 5 sec
b) Change from 80 to 40 b/min: 6 to 8 sec
Time to alarm for
tachycardia.
3.1.2.1 (g)
Waveform 4(a) Amplitude
•0.5 mV
•1.0 mV
•2.0 mV
Average Time to Alarm
•8.6 sec
•7.0 sec
•3.0 sec
Waveform 4(b) Amplitude
•1.0 mV
•2.0 mV
•4.0 mV
Average Time to Alarm
•8.0 sec
•2.4 sec
•2.4 sec