Philips 862478 - Manual (Page 177)

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