Measuring and Displaying Parameters

ECG

Standards

Standards

Meets the performance standards of ANSI/AAMI EC13-1992. Instead of a 1 mV standardizing voltage (section 3.2.2.9), a fixed, 1 cm reference bar is always present in the ECG display, along with the ECG size setting expressed in mV/cm. The following information references particular sections of ANSI/ AAMI EC13-1992.

Respiration, leads-off

A 85 kHz square wave is used to inject 50 µA p-p differentially between RA

sensing waveform.

and LL.

 

 

3.1.2.1 (b)

 

 

 

 

 

 

Tall T-wave rejection.

T-wave of 0.8 mV amplitude will not affect heart rate determination.

3.1.2.1 (c)

 

 

 

 

 

 

Heart rate averaging.

Averages six of the most recent eight detected R-R intervals excluding the

3.1.2.1 (d)

longest and shortest of the eight intervals.

 

 

 

 

Response to irregular

a) Ventricular bigeminy - 80 b/min rhythm.

 

rhythms

b) Slow alternating ventricular bigeminy - 30 b/min

3.1.2.1 (e)

c) Rapid alternating ventricular bigeminy - 80 to 103 b/min

 

d) Bi-directional systoles - 90 to 105 b/min

 

 

 

 

Heart rate meter

a) Change from 80 to 120 b/min: 4 to 5 sec

 

response time.

b) Change from 80 to 40 b/min: 6 to 8 sec

 

3.1.2.1 (f)

 

 

 

 

 

 

 

Time to alarm for

Waveform 4(a) Amplitude

Average Time to Alarm

tachycardia.

0.5 mV

8.6 sec

3.1.2.1 (g)

1.0 mV

7.0 sec

 

2.0 mV

3.0 sec

 

 

 

 

Waveform 4(b) Amplitude

Average Time to Alarm

 

1.0 mV

8.0 sec

 

2.0 mV

2.4 sec

 

4.0 mV

2.4 sec

 

 

 

 

 

Specifications 12-5

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Philips 862474, 862478 manual Standards

862474, 862478 specifications

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