Welch Allyn 246 Propaq CS Vital Signs Monitor v.3.7X - User Manual - Manual (Page 100)

96 Reference Welch Allyn Propaq CS Vital Signs Monitor
QRS Detector Adult or Pediatric Amplitude Range: 0.22 to 5.0 mV (RTI)
Neonatal Amplitude Range: 0.1 to 5.0 mV (RTI)
Neonatal and Pediatric Width Range (Duration):
40 to 120 ms
Adult Width Range (Duration): 70 to 120 ms
Heart Rate Range 25 to 350 beats per minute (measurement)
25 to 300 beats per minute (display)
HR/PR Alarm Limits Range 25 to 250 beats per minute
Heart Rate Meter Response
Time Responds to change in heart rate within 5 to 9 seconds depending on physiological
waveform. (As measured per AAMI standard EC 13-1992 clause 4.1.2.1 (f), including
3.1.2.1 parts f. and g. waveforms.) Includes 1 second readout update interval.
HR Accuracy ±3 beats per minute or 3%, whichever is greater
NOTE: AAMI Test 4.1.4 part f: Accuracy is affected (i.e., rate drops) when QRS and
pacer spikes are nearly simultaneous as occasionally is the case during this AAMI
test.
Heart Rate Averaging Method Heart rate = 60
/ latest average interval in seconds.
For higher heart rates, latest average interval = 7/8 of previous average interval + 1/8
of latest interval.
For lower heart rates, latest average interval = 3/4 (previous average interval) + 1/4
latest interval.
Transition rates for choice of formula include hysteresis and are 70 and 80 beats per
minute.
Drift Tolerance (AAMI
Specification EC13-1992,
3.2.6.3) 80 beats per minute indicated for 80 beats per minute ECG plus drift waveform
Pacer Display Pacer indicator shown on screen if PACER function turned on; pacer spike always
shown if of sufficient amplitude.
Pacer Pulse Rejection Pacer detection range (i.e., will show the dashed vertical marker) for 0.1 ms pulses is
±3 mV to ±700 mV, and drops linearly to ±2 mV to ±700 mV for 0.2 to 2 ms pulses.
Will not count as heartbeats approximately 95% of pacemaker pulses within pacer
detection range, with or without AAMI (EC13 1992) tails of 4, 25, 50, 75, or 100 ms
decay time constant, whose tail amplitudes are 2.5% or 25%, 2mV maximum,
whether ventricular only, or A-V sequential pulses, all per AAMI tests 3.1.4.1 and
3.1.4.2
Response to Irregular Rhythm (AAMI specification EC13-1992, 3.1.2.1. Part e.)
Ventricular Bigeminy (VB) 78 to 81 bpm (80 bpm expected)
Slow Alternating VB 57 to 65 bpm (60 bpm expected)
Rapid Alternating VB 118 to 123 bpm (120 bpm expected)
Bidirectional Systole 88 to 93 bpm (90 bpm expected)
1mV Ventricular Tachycardia 197 to 198 bpm (206 bpm expected)
2mV Ventricular Tachycardia 193 to 197 bpm (206 bpm expected)
Characteristic Specification