Defibrillator – ECG Display
(DDU-2450 only)
Category
Specification
Displayed ECG
ECG information is received from defibrillation pads in anterior-lateral or
anterior-posterior positions
Screen type
TFT Color LCD with backlight
(53.6mm x 71.5mm) (320 x 240 pixels)
Displayed Range
Differential: ±2 mV full-scale
Display Scale
Sweep Speed: 25 mm/sec (±10%)*
Gain: 10 mm/mV (±10%)*
Frequency Response
1 Hz to 22 Hz (-3 dB), nominal
Sensitivity
10 mm/mV, nominal
Heart rate display
20 to 300 bpm, updated once/second
• Displayed when ECG viewing is enabled. Not intended for unattended
patient monitoring. No alarms provided.
• An out of range heart rate is indicated by dashed lines in the display.
• Heart rate averaging computed on a 4 second rolling average.
Response time for step changes in heart rate may be up to 10 seconds.*
• Response to special arrhythmias*:
○
Ventricular bigeminy (A1): 80 bpm
○
Slow alternating ventricular bigeminy (A2): 30 bpm
○
Rapid alternating ventricular bigeminy (A3): 120 bpm
○
Bidirectional systoles (A4): 90 bpm
Pacemaker pulse
Pacemaker pulse display*:
• Capable of displaying pacemaker pulses ±4mV – ±700mV
between 0.5ms – 2ms
Pacemaker pulse rejection*:
• Synchronous pulses, without overshoot: ±2mV – ±700 mV, 0.1 ms
• Synchronous pulses, with overshoot: ±1mV, 100ms – ±3 mV,
4 ms (0.1 ms width)
• Asynchronous pulses may not always be rejected and may impact reported
heart rate
Tall T-wave rejection
T-wave rejection: 0 to 0.4 mV*
Larger amplitude T-waves may be counted for heart rate.
*Tested per IEC 60601-2-27
Note:
The ECG Display provides non-diagnostic ECG of the patient’s heart rhythm. It is not intended to provide
diagnostic or ST segment interpretation.
Note:
The ECG waveform sensitivity and magnification settings are fixed and are not user adjustable.
Defibtech DDU-2000 Series AED (continued)
9.
Tec
hnical Specifications
51
DAC-U2510EN-BF rev H
