anestheisa machine check
Terms
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- machine check
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1) emergency vent. equipment
2) high-pressure system
3) low-pressure system
4) scavenging system
5) breathing system
6) manual & automatic vent. systems
7) monitors
8) final position - 1)emergency ventilation equipment
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1)verify backup vent. equipment is available and functioning
ambu bag - 2)high-pressure system
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2) check O2 cylinder supply
- open O2 cylinder & verify at least half full (about 1000 psig)
- close cylinder
3) check central pipeline supplies
- check that hoses are connected
- pipeline gauses read about 50 psig - 3) low-pressure system
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7) test flowmeters
- adjust flow of all gases through their full range, checking for smooth operation of floats and undamaged flowtubes
- attempt to create a hypoxic O2/N2O mixture and verify correct changes in flow and/or alarm - 4) scavenging system
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8) adjust and check scavenging system
- ensure proper connections bet. the scavenging system and both APL valve adn vent. relief valve
- adjust waste-gas vacuum (if possible) - 4) scaenging system
- - with minimum O2 flow, allow scavenger reservoir bag to collapse completely and verify that absorber pressure gauge reads about 0
- 4) scavnging system
- - with the O2 flush activated, allow scavenger reservoir bag to distend fully, and then verify that absorber pressure gauge reads < 10 cm H2O
- 5) breathing system
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10) chcek initial status breathing system
- set selector switch to BAG mode
- check that breathing circuit is complete, undamaged, and unobstructed
- verify that CO2 absorbent is adequate
install breathing-circuit accessory equipment (humidifier, PEEP valve) -
5) breathing system
11) perfrom leak check of the breating system -
- set all gas flow to 0
- close APL valve and occlude Y-piece
- pressure breathing system to about 30 cm H2O with O2 flush
- ensure that pressure remains fixed for at least 10 sec.
- open APL valve and ensure that pressure decreases - 6) manual and automatic vent. systems
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- turn vent. OFF and switch to manual vent. (bag/APL) mode
- ventilate manually and assure inflation and deflation of artificial lungs and appropriate feel of system resistance and compliance
- remove 2nd breathing bag from Y-piece - 7) monitors
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13) check, calibrate and/or set alarm limits of all monitors:
capnograph
pulse ox
O2 analyzer
resp. volume monitor (spirometer)
pressure monitor with high and low airway-pressure alarms - 8) final position
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14) check final status of machine
- vaporizers off
- APL valve open
- selector switch to bag mode
- all flowmeters to 0 (or minimum)
- pt suction level adequate
- breathing system ready to use