Mindray BeneVision N22 User Manual

A - 12 BeneVision N22/N19 Patient Monitor Operator’s Manual
HR averaging method In compliance with the requirements in Clause 201.7.9.2.9.101 b) 3) of IEC
60601-2-27, 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.
Response to irregular rhythm In compliance with the requirements in Clause 201.7.9.2.9.101 b) 4) of IEC
60601-2-27, 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
Response time to heart rate change Meets the requirements of IEC 60601-2-27: Clause 201.7.9.2.9.101 b) 5).
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 201.7.9.2.9.101 b) 6).
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
Tall T-wave rejection capability When the test is performed based on Clause 201.7.9.2.9.101 b) 2)of IEC 60601-
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.
Arrhythmia Analysis Classifications Asystole, VFib/VTac, Vtac, Vent. Brady, Extreme Tachy, Extreme Brady,
Vrhythm, PVCs/min, Pauses/min, Couplet, Bigeminy, Trigeminy, R on T, Run
PVCs, PVC, Tachy, Brady, Missed Beats, PNP, PNC, Multif. PVC, Nonsus. Vtac,
Pause, Irr. Rhythm., Afib
ST Segment Analysis
Measurement range
-2.0 to 2.0 mV
Accuracy
-0.8 to 0.8 mV:
Beyond this range:
±0.02 mV or ±10%, whichever is greater.
Not specified.
Resolution
0.01mV
QT/QTc Analysis
Measurement range QT: 200 to 800 ms
QTc: 200 to800 ms
QT-HR: 15 to 150 bpm for adult, 15 to 180 bpm for pediatric and neonate
Accuracy QT: ±30 ms
Resolution QT: 4 ms
QTc: 1 ms
QTc: 1 ms
Alarm limit Range (rpm) Step (rpm)

Mindray BeneVision N22 Specifications

General

Brand	Mindray
Model	BeneVision N22
Category	Monitor
Language	English