Impedance pneumography (resp) – Welch Allyn 206EL Propaq Encore Vital Signs Monitor - User Manual User Manual

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Specifications

Welch Allyn Propaq Encore Vital Signs Monitor

Impedance pneumography (RESP)

Characteristic

Specification

Display Characteristics

Sweep speed

3.13, 6.25, 12.5 mm/sec; user-selectable

Amplitude range

1x, 2x, 4x, 8x, 16x

Performance Characteristics

Excitation signal
characteristics

65 µA RMS ± 5% at 63.0 kHz pseudo sine wave

Sensing electrodes

User selectable RA-LA or RA-LL

Base impedance (in addition to
1K resistors in ECG cables)

100 to 1200 ohms is normal monitoring range, approx. 1200-1500 ohms
range produces a “NOISY SIGNAL, CHECK ELECTRODES” equipment alert.
Above approx. 1500 ohms produces a “RESP FAULT, LEAD FAIL” equipment
alert. Thresholds are dependent on ECG cable type.

Impedance dynamic range

20 ohms

Signal bandwidth after
detection

0.06 Hz (single pole) to 3.2 Hz (2 pole)

Breath detection threshold

140 milliohms or 2x CVA, whichever is greater

Respiration rate range

Adult/Ped: 0 (apnea), 2 to 150 breaths/min
Neonate: 0 (apnea), 3 to 150 breaths/min

Respiration rate accuracy

± 2 breaths/min or ± 2%, whichever is greater

Respitation rate source (RR)

When CO

2

is active, CO

2

is the BR source. Otherwise, RESP from ECG is the

RR source.

Apnea alarm delay accuracy

+1 second

Resolution

5 seconds

Apnea alarm delay settings

Central apnea only - alarm delay is set by the user
Adult/Ped = 6, 10, 15, 20, 25, 30
Neonate = 6, 10, 15, 20 seconds

Cardiovascular artifact
rejection (CVA)

Presence of CVA is detected automatically. Breaths will be picked in the
presence of CVA unless the Breath Rate is within 5% of the Heart Rate or a
sub-multiple of the heart rate.

Motion artifact rejection

not rejected

Obstructive apnea

not detected

Cardiovascular artifact
rejection (CVA)

Presence of CVA is detected automatically. Breaths will be picked in the
presence of CVA unless the Breath Rate is within 5% of the Heart Rate or a
sub-multiple of the heart rate.

Motion artifact rejection

not rejected

Obstructive apnea

not detected

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