88
88
ECG (cont.)
Heart rate:
Measurement range: 30 to 250 bpm
Measurement accuracy: ±5 % or ±5 bpm
Display averaging time: 5 seconds
Display update time: 5 seconds
Average heart rate response time and time range of
response time (according to ANSI/AAMI EC13
4.1.2.1):
Response time 80 to 120 bpm: 6.6 s (4.7 to 9.1 s)
Response time 80 to 40 bpm:
10.2 s (8.7 to 12.8 s)
Maximum Tall T wave amplitude that does not
disturb the heart rate calculation time (according to
ANSI/AAMI EC13 4.1.2.1): 2.2 mV
The heart rate calculation operates with irregular
rhythms of ANSI/AAMI EC13 4.1.2.1 as follows:
a): 85 bpm
b): 64 bpm
c): 125 bpm
d): 95 bpm
Pacemaker pulse detection:
detection level: 2 to 700 mV
pulse duration: 0.5 to 2 ms
The monitor is specified for both of the methods A
and B required in AANSI/AAMI EC13 section
4.1.4.2.
Offset voltage range: ±1.0 V
CMRR: >95 dB
Pacer pulse rejection of fast ECG signals:
2.0 V/s according to the test defined in
ANSI/AAMI EC13 section 4.1.4.3.
Pacemaker detector may not operate correctly
during the use of high-frequency (HF) surgical
equipment. The disturbances of HF surgical
equipment typically cause false positive pacer
detection.
Direct current for leads-off detection through an
active patient electrode: <30 nA
Direct current for leads-off detection through a
reference electrode: <300 nA
The normalized respiration sensing current between
RA (R) and LL (F) or RA (R) and LA (L) or LA (L) and
LL (L): <5.0
µ
A
Frequency of respiration sensing current: 31.25 kHz
Minimizing the effects of the line isolation monitor
transients:
Crystal controlled oscillator used as the operating
frequency source of the patient isolation power
supply.
The average time and time range ( ) to alarm for
tachycardia are as follows (ANSI/AAMI EC13
4.1.2.1.g):
Figure 4a halved amplitude: 6.3 s (5.7 to 7.1 s)
Figure 4a normal amplitude:6.1 s (5.0 to 8.6 s)
Figure 4a doubled amplitude:4.8 s (4.7 to 5.1 s)
Figure 4b halved amplitude: 5.7 s (5.2 to 6.4 s)
Figure 4b normal amplitude:6.6 s (5.1 to 8.7 s)
Figure 4b doubled amplitude:5.6 s (5.4 to 6.2 s)
The ECG measurement fulfils the requirements of the
ANSI/AAMI EC11 3.2.7.2 by using the test methods
a, b, c and e.
Direct cardiac application:
The display area reserved for the ECG measurement
in the S/5 monitoring system screen may not be
adequate for displaying the complete ECG
amplitude when measuring ECG direct from the
surface of the heart. Clipping of the signal can be
reduced by adjusting the size of the signal on the
display (for example, from the default 1.0 to 0.2) in
the ECG menu.
ECG analog output (X5):
Bandwidth of auxiliary output: 0.05 to 100Hz
Gain:
1mV ECG signal is 1V ±10% at
the analog output.
Propagation delay: < 35ms.
The pacemaker pulses have been replaced with 2ms
fixed digital pulses at the ECG output for IABP or
defibrillator equipment.
A device that fulfils the requirements of the IEC
60601-1 standard can be connected to the ECG
analog output. There are no other limitations,
because the ECG analog output of the monitor is
galvanically isolated from patient applied part of the
ECG measurement.
Impedance respiration
Respiration range: 4 to 120 resp/min
Accuracy:
± 5% or ± 5 resp/min
The EMC immunity of the respiration measurement
has been tested with 1 Vrms and 1 V/m. This level
has been used for optimizing the immunity of the
respiration measurement to damp the operating
frequency of the electrosurgery equipment.
NOTE: Impedance respiration measurement is
intended for patients over three years old.
Summary of Contents for S/5 FM
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