Anesthesia Machine Safety Checkout

Question 1

MOMSAID pneumonic

Answer 1

Manual ventilation device, oxygen, machine check & monitors, suction, airway, IV, drugs and defibrillator

Question 2

ASC pneumonic

Answer 2

airway, suction, circuit

Question 3

ASC turnover checklist

Answer 3

Used before EACH procedure:

• Airway = check airway equipment and emergency drugs, confirm proper vent settings & monitors/alarms
• Suction = verify maximum suction power available
• Circuit = perform breathing circuit pressure and leak check, observe proper functioning of I/E valves

Question 4

Pipeline pressure should be at?

Answer 4

> 45-50 psi

Question 5

cylinders should be half full which is how much psi for oxygen, air & nitrous

Answer 5

> 1,000 psi for O2 & Air

725psi for N2O

Question 6

Purpose of N2o link system

Answer 6

The measured O2 concentration must be >21% through a full range of N2O flows to prevent deliver of a hypoxic mixture

Question 7

Purpose of O2 supply failure device

Answer 7

An alarm sounds and displays “No O2 Pressure” when O2 pressure is lost. The flow of N20 should also stop. Check cylinder and pipeline O2 supply.

Question 8

What is the purpose of the vaporizer interlock device

Answer 8

Prevent simultaneous administration of more than one volatile agent

Question 9

What is the purpose of O2 flush mechanism?

Answer 9

Used to rapidly refill or flush the breathing circuit & bellows

It receives O2 from the pipeline or cylinder & directs a high unmetered flow (between 35 & 75 L/min) directly to the common gas outlet.

Caution: Barotrauma & Gas Dilution

Question 10

What is the purpose of the scavenging system?

Answer 10

Prevent contamination of the OR with waste anesthetic gases

Question 11

Before EVERY patient check?

Answer 11

1. emergency equipment and drugs
2. suction
3. monitors, equipment, and alarm limits
4. test breathing circuit and reservoir bag for leaks.

Question 12

How to test the breathing circuit and reservoir bag for leaks?

Answer 12

• Set bag/vent switch to “bag” and O2 flow to minimum.
• Close APL valve (set to 70 cm H2O) and close the breathing circuit at the patient “Y” connection (use your hand or test plug).
• Pressurize circuit reservoir bag with O2 flush to 30 cm H20.
• Verify that circuit pressure does not decrease and stays at 30cm H2O.
• Open APL valve (set to 0 cm H2O).
• Verify circuit pressures decrease to zero.

Question 13

The anesthesia time out consists of?

Answer 13

To be performed before each anesthetic:

• Appropriate patient?
• Appropriate case?
• Confirm proper ventilator settings and readiness to deliver anesthesia.
• Monitors functional?
• Capnogram present?
• SpO2 present?
• Emergency drugs/airway available?