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13 Cards in this Set
- Front
- Back
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On the anesthesia machine, what is the purpose of the fail safe alarm?
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The fail safe device ensures that whenever oxygen pressure is reduced and until flow ceases, the set oxygen concentration shall not decrease at the common gas outlet. In addition, the loss of oxygen pressure results in alarms, audible and visible, at 30 psi pipeline pressure
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On the anesthesia machine, what is the purpose of the pressure alarm?
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It alarms when the pressure in the pipeline drops.
The pressure in the piple line is usually 50psi. |
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On the anesthesia machine, what is the purpose of the hypoxic guard?
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It is a safety device that shuts off other gases when the oxygen going to the pt drops below 25%.
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On the anesthesia machine, what is the purpose of the oxygen flush?
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Used to resolve a hypoxic mixture
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When is the anesthesia apparatus checkout performed?
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Before each administration of anesthesia
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For the anesthesia apparatus checkout, what checks should be performed on the emergency ventilation equipment?
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1.Ventilation Equipment is Available & Functioning
High Pressure System 2. Check Oxygen Cylinder Supply - open cylinder and verify at least half full (about 1000 psi) of oxygen then close cylinder 3. Check Central Pipeline Supplies - check that hoses are connected and pipeline gauges read about 50 psi. |
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For the anesthesia apparatus checkout,what checks should be performed on the low pressure system (points of the circuit after the second regulator)?
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1. Check Initial Status of Low Pressure System
a. Close flow control valves and turn vaporizers off. b. Check fill level and tighten vaporizers' filler caps. 2. Perform Leak Check of Machine Low Pressure System a. Verify that the machine master switch and flow control valves are OFF. b. Attach "Suction Bulb" to common fresh gas outlet. c. Squeeze bulb repeatedly until fully collapsed. d. Verify bulb stays fully collapsed for at least 10 seconds. e. Open one vaporizer at a time and repeat 'c' and 'd' as above. f. Remove suction bulb, and reconnect fresh gas hose. 3. Turn On Machine Master Switch and all other necessary electrical equipment. 4. Test Flowmeters a. Adjust flow of all gases through their full range, checking for smooth operation of floats and undamaged flowtubes. b. Attempt to create a hypoxic /N 0 mixture and verify correct changes in flow 02 2 and/or alarm. Scavenging |
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For the anesthesia apparatus checkout,what checks should be performed on the scavenging system?
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a. Ensure proper connections between the scavenging system and both APL (pop-off)
valve and ventilator relief valve. b. Adjust waste gas vacuum (if possible). c. Fury open APL valve and occlude Y-piece. d. With minimum oxygen flow, allow scavenger reservoir bag to collapse completely and verify that absorber pressure gauge reads about zero. e. With the oxygen flush activated allow the scavenger reservoir bag to distend fully, and then verify that absorber pressure gauge reads < 10 cm H20. |
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For the anesthesia apparatus checkout,what checks should be performed on the
breathing system? |
1. Calibrate 02 Monitor:
a. Ensure monitor reads 21% in room air. b. Verify low 02 alarm is enabled and functioning. c. Reinstall sensor in circuit and flush breathing system with 02 d. Verify that monitor now reads greater than 90%. 2. Check Initial Status of Breathing System: a. Set selector switch to "Bag" mode. b. Check that breathing circuit is complete, undamaged and unobstructed. c. Verify that CO2 absorbent is adequate d. Install breathing circuit accessory equipment (e.g. humidifier, PEEP valve) to be used during the case. |
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For the anesthesia apparatus checkout,what checks should be performed in order to complete the leak check of the breathing system?
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a. Set all gas flows to zero (or minimum).
b. Close APL (pop-off) valve and occlude Y-piece. c. Pressurize breathing system to about 30 cm H20 with flush. d. Ensure that pressure remains fixed for at least 10 seconds. e. Open APL (Pop-off) valve and ensure that pressure decreases. |
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For the anesthesia apparatus checkout,what checks should be performed on the monitors?
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Calibrate and/or set alarm limits of all monitors,
Capnometer, pulse oximeterc oxygen analyzer respiratory volume monitor (Spirometer), pressure monitor with high/low airway alarms |
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For the anesthesia apparatus checkout on both the manual & automatic ventilation systems, how is the ventilation system checked?
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1. Test Ventilation Systems and Unidirectional Valves:
a. Place a second breathing bag on Y-piece. b. Set appropriate ventilator parameters for next patient. c. Switch to automatic ventilation (Ventilator) mode. d. Fill bellows and breathing bag with 02 flush and then turn ventilator to ON. e. Set 02 flow to minimum, other gas flows to zero. f. Verify that during inspiration bellows delivers appropriate tidal volume and that during expiration bellows fills completely. g. Set fresh gas flow to about 5 L/min. h. Verify that the ventilator bellows and simulated lungs fill and empty appropriately without sustained pressure at end expiration. i. Check for proper action of unidirectional valves. j. Exercise breathing circuit accessories to ensure proper function. k. Turn ventilator OFF and switch to manual ventilation (Bag/APL) mode. I. Ventilate manually and assure inflation and deflation of artificial lungs and appropriate feel of system resistance and compliance. m. Remove second breathing bag from Y-piece. |
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For the anesthesia apparatus checkout what is done for the final position checked?
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Vaporizers off - all flowmeters to zero
APL valve open Patient suction level adequate Selector switch to "Bag" Breathing system ready to use |
