Anesthesia Books

Wednesday, December 10, 2014

[Video] Anesthesia Machine Preoperative Check

1st Check:

Wall Connections
Pressure Gauge.
Ports Fitness (Press & Twist).

Keep (After each test):

The vaporizers closed.
The Flow-meters closed.

Flow-meters:
- Bobbins for stickiness (Open and Close).
Vaporizers:
- Fixed in position.
- Well locked (back locker).
- Anesthetic tank cover is well closed.
- Anesthetic tank fluid level.
- Dial for stickiness.
- Interlock if two vaporizers (open both alternatively).
Common Gas Outlet:
- O₂ Flush Button:
  - Stickiness (Press and release).
  - Gas delivery at the common gas outlet.
- Leak:
  1. Set the flow-meter at 5-6 L/Min.
  2. Keep the vaporizers closed.
  3. Press the flush button.
  4. Obstruct the common gas outlet.
  5. Watch the flow-meter bobbins for downward descent.
  6. Open the vaporizers & repeat.
Circuit (for leak):
1. Turn on the ventilator on volume controlled mode.
2. Watch the pressure curve on the screen for the peak pressure and plateau time.
Auto-PEEP:
1. Set the flow-meters to 5-6 L/Min.
2. Watch the pressure curve baseline on the ventilator screen.
Valves:
- Pressure release valve.
- Unidirectional valves.
Pillows:
- Stickiness:
  Watch them expanding and collapsed freely while the ventilator is turned on.
- Tidal Volume:
  1. Attach a bag at the end of the circuit.
  2. Set the flow-meter at 2-3 L/Min.
  3. Keep the ventilator on volume controlled mode.
  4. Compare the ventilator set tidal volume to the pillows delivered volume.
Alarms:
- High pressure: Compress the bag.
- Apnea: Disconnect the bag.
- Low O₂: Decrease FiO₂ below the alarm limit.
Soda-lime.
Ambu Bag:
Squeeze and release it while the valve is closed, no gas should be released, and then while it's opened, watch the free flow of gas across it.
Suction Apparatus:
Turn on the device, obstruct its and and watch the pressure created.

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