40 Specifications
478
Respiration
Heart Rate Averaging Method 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 aver\-aged to compute the HR.
Response Time of Heart Rate Meter to Change in Heart Rate 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
Heart Rate Meter Accuracy and Response to Irregular Rhythm Ventricular bigeminy: 80 bpm
Slow alternating ventricular bigeminy: 60 bpm
Rapid alternating ventricular bigeminy: 120 bpm
Bidirectional systoles: 90 bpm
Accuracy of Input Signal Reproduction Methods A and D were used to establish overall system error
and frequency response.
Pacemaker Pulse Rejection Performance Rejection of pacemaker pulses with amplitudes from ±2 mV to
±700 mV and widths from 0.1 ms to 2.0 ms (Method A)
Pacemaker Pulse Rejection of fast ECG signals 2.2 V/s RTI (Paced Mode)
Minimum input slew rate 2.2 V/s RTI
ECG/Arrhythmia/ST Supplemental Information as required by AAMI EC11/13, IEC 60601-2-27
Respiration Performance Specifications
Respiration Rate 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
Bandwidth 0.3 to 2.5 Hz (-6 dB)
Noise Less than 25 mΩ (rms) referred to the input
Respiration Alarm
Specifications
Range Adjustment Delay
High Adult/pedi: 10 to 100 rpm
Neo: 30 to 150 rpm
under 20 rpm: 1 rpm steps
over 20 rpm: 5 rpm steps
max. 14 seconds
Low Adult/pedi: 0 to 95 rpm
Neo: 0 to 145 rpm
under 20 rpm: 1 rpm steps
over 20 rpm: 5 rpm steps
for limits from 0 to 20 rpm:
max. 4 seconds
for limits above 20 rpm: max.
14 seconds
Apnea Alarm 10 to 40 seconds 5 second steps
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