Mindray Passport 5-Lead, Руководство по обслуживанию

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Passport 5-Lead, 5L, LT, XG Service Manual 0070-00-0420 1 - 43
Operation (5-Lead, 5L, LT and XG) Operation (5-Lead, 5L, LT)
The filling and emptying of the heart chambers can interfere with the thoracic impedance
signal, so called cardiovascular artifact (CVA), such that the respiratory signal matches the
heart rate. The Passport warns the operator when the respiration value equals the heart rate
by displaying the CVA message.
If the patient’s airway is obstructed and the patient attempts to breath, then the chest wall can
move and create a respiratory signal even though no gas flow is occurring to the patient.
1.3.10.2 CO
2
Waveform
When used with the mainstream CO
2
analyzer the Passport may use the breath waveform to
report the respiration rate by measuring the actual breaths per unit time. The advantage of
the CO
2
waveform method is that the signal is a direct result of respiration and can only
occur if the patient is actually breathing. The disadvantage to the CO
2
waveform method is
that intubation is required.
1.3.10.3 Respiration Monitoring on the Passport
1.3.10.3.1 Thoracic Impedance
1. Select the SET-UP menu.
2. Select WAVEFORM 3 and set to RESP (if waveform desired).
3. Select RESP SOURCE and set to ECG.
4. Press the END key (3).
1.3.10.3.2 CO
2
Waveform (requires optional mainstream CO
2
)
1.
Select the SET-UP menu.
2.
Select WAVEFORM 3 and set to CO
2
(if waveform desired).
3.
Select RESP SOURCE and set to CO
2
.
4.
Press the END key (3).
1.3.11 Gas Monitoring
The Passport offers the Capnostat mainstream method of measuring respiratory rate and end
tidal CO
2
. Capnostat requires a hardware option within the Passport Monitor. It utilizes a
large lumen adapter which is placed directly into the endotracheal tube.