User's Manual

Table Of Contents
Measurement Specifications Product Specifications
A - 12 TMS60 Operator’s Manual
HR averaging method
Mindray ECG algorithm Mortara ECG algorithm
In compliance with the
requirements in Clause
201.7.9.2.9.101 b) 3) of
IEC60601-2-27, the following
method is used:
If the last 3 consecutive RR
intervals are greater than 1200
ms, the 4 most recent RR
intervals are averaged to
compute the HR. Otherwise,
heart rate is
computed by subtracting the
maximum and minimum ones
from the most recent 12 RR
intervals and then averaging
them.
The HR value displayed on the
monitor screen is updated
every second.
In compliance with the
requirements in Clause
201.7.9.2.9.101 b) 3) of
IEC60601-2-27, the following
method is used:
Heart rate is computed by
averaging the most recent 16
RR intervals, unless the HR by
averaging the most recent 4
heart beats is less than or equal
to 48 bpm.
The HR value displayed on the
monitor screen is updated
every second.
Tall T-wave rejection capability
When the test is performed based on Clause 201.7.9.2.9.101 b) 2)of
IEC60601-2-27, the heart rate meter will reject all 100 ms QRS
complexes with less than 1.2 mV of amplitude, and T waves with T-
wave interval of 180 ms and those with Q-T interval of 350 ms.
Response time to heart rate change
Meets the requirements of IEC60601-2-27: Clause 201.7.9.2.9.101 b)
5).
From 80 bpm to 120 bpm: less than 11 s
From 80 bpm to 40 bpm: less than 11 s
Response to irregular rhythm
In compliance with the requirements in Clause 201.7.9.2.9.101 b) 4)
of IEC60601-2-27, the heart rate after 20 seconds of stabilization is
displayed as follows:
Ventricular bigeminy (3a): 80 ± 1 bpm
Slow alternating ventricular bigeminy (3b): 60 ± 1 bpm
Rapid alternating ventricular bigeminy (3c): 120 ± 1 bpm
Bidirectional systoles (3d): 90 ± 2 bpm
Time to alarm for tachycardia
Meets the requirements of IEC60601-2-27: Clause 201.7.9.2.9.101 b)
6).
Waveform
4ah - range: < 11 s
4a - range: < 11 s
4ad - range: < 11 s
4bh - range: < 11 s
4b - range: < 11 s
4bd - range: < 11 s
ST Segment Analysis
Measurement range
-2.0 mV to +2.0 mV RTI