Mindray BeneHeart D1, Operator'S Manual

Page: 79 / 106

A-5
ECG
Electrode offset potential tolerance ±1 V
HR measurement range
Pediatric
Adult
15 to 350 bpm
15 to 300 bpm
HR accuracy ±1% or ±1bpm, which ever is greater
HR resolution 1 bpm
Lead-off detection current
Measuring electrode: <0.1 μA
Drive electrode: <1 μA
Baseline recovery time <5 s (after defibrillation)
Tall T-wave rejection capability
When the test is performed based on part 4.1.2.1 c) of ANSI/AAMI EC 13-2002,
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 to irregular rhythm
Meets the requirements of ANSI/AAMI EC13-2002: section 4.1.2.1 e). The heart
rate reading after 20 seconds of stabilization is:
Ventricular bigeminy (3a):
Slow alternating ventricular bigeminy (3b):
Rapid alternating ventricular bigeminy (3c):
Bidirectional systoles (3d):
80±1 bpm
60±1 bpm
120±1 bpm
90±2 bpm
Response to change in heart rate
Meets requirements of ANSI/AAMI EC13-2002: section 4.1.2.1 f).
From 80 to 120 bpm: less than 11 s;
From 80 to 40 bpm: less than 11 s;
Time to alarm for tachycardia
Meets the requirements of ANSI/AAMI EC13-2002: section 4.1.2.1 g).
Waveform
4ah - range:
4a - range:
4ad - range:
4bh - range:
4b - range:
4bd - range:
11 s
11 s
11 s
11 s
11 s
11 s
Heart rate averaging
In compliance with the requirements in Clause 4.1.2.1 d
）
of ANSI/AAMI
EC13-2002, 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.
Arrhythmia Analysis Classifications
Asystole, Shockable rhythm (V-Fib/V-Tach), Vtac, Vent. Brady, Extreme Tachy,
Extreme Brady, PVCs/min, PVC, Couplet, VT>2, Bigeminy, Trigeminy, R on T,
Tachy, Brady, PNP, PNC, Vent. Rhythm, Multif. PVC, Nonsus. Vtac, Irr. Rhythm