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Measurement Specifications
ECG/Arrhythmia/ST Supplemental Information as required by AAMI EC11/13
Time to Alarm for
Tachycardia
Tall T-Wave Rejection Capability
Heart Rate Averaging Method
Response Time of Heart Rate Meter to Change in
Heart Rate
Heart Rate Meter Accuracy and Response to
Irregular Rhythm
Accuracy of Input Signal Reproduction
Pacemaker Pulse Rejection Performance
Respiration
Respiration Performance Specifications
Respiration Rate
Bandwidth
Noise
Vent Tachycardia
Gain 0.5, Range 6.5 to 8.4 seconds, Average 7.2 seconds
1 mV
,206 bpm
pp
Gain 1.0 Range 6.1 to 6.9 seconds, Average 6.5 seconds
Gain 2.0, Range 5.9 to 6.7 seconds, Average 6.3 seconds
Vent Tachycardia
Gain 0.5, Range 5.4 to 6.2 seconds, Average 5.8 seconds
2 mV
,195 bpm
pp
Gain 1.0, Range 5.7 to 6.5 seconds, Average 6.1 seconds
Gain 2.0, Range 5.3 to 6.1 seconds, Average 5.7 seconds
Exceeds ANSI/AAMI EC 13 Sect. 3.1.2.1(c) minimum
recommended 1.2 mV T-Wave amplitude
Three different methods are used:
Normally, heart rate is computed by averaging the 12 most
recent RR intervals.
For runs of PVCs, up to 8 RR intervals are averaged to compute
the HR.
If each of 3 consecutive RR intervals is greater than 1200 ms
(that is, rate less than 50 bpm), then the 4 most recent RR
intervals are averaged to compute the HR.
HR change from 80 to 120 bpm:
Range: [6.4 to 7.2 seconds] Average: 6.8 seconds
HR change from 80 to 40 bpm:
Range: [5.6 to 6.4 sec] Average: 6.0 seconds
Ventricular bigeminy: 80 bpm
Slow alternating ventricular bigeminy: 60 bpm
Rapid alternating ventricular bigeminy: 120 bpm
Bidirectional systoles: 90 bpm
Methods A and D were used to establish overall system error
and frequency response.
Rejection of pacemaker pulses with amplitudes from ±2 mV to
±700 mV and widths from 0.1 ms to 2.0 ms (Method A)
Range
Adult/pedi: 0 to 120 rpm
Neo: 0 to 170 rpm
Accuracy
at 0 to 120 rpm ±1 rpm
at 120 to 170 rpm ±2 rpm
Resolution
1 rpm
0.3 to 2.5 Hz (–6 dB)
Less than 25 mΩ (rms) referred to the input
31 Installation and Specifications
311

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