Week 2 Handout Flashcards
(126 cards)
What is the primary function of the Pipeline Check Valve?
Automatically switch between the pipeline supply and the E-cylinder based on pressure levels.
When does the Pipeline Check Valve engage the E-cylinder?
When the pipeline pressure drops below a certain threshold.
What is the importance of the Pipeline Check Valve in anesthesia?
Ensures a continuous supply of oxygen critical for patient safety.
What does the Hanger Yoke Valve provide?
A physical interface for attaching gas cylinders to the anesthesia machine.
What is the purpose of the Pin Index Safety System (PISS)?
Prevents the attachment of a cylinder with the wrong gas by matching specific pin configurations.
What does the Bourdon Gauge measure?
The pressure in a gas cylinder.
What happens to the Bourdon tube when pressure is applied?
It straightens out, causing a dial or needle movement on the gauge face.
What is a critical limitation of the Bourdon Gauge?
It only indicates pressure, not the exact amount of gas remaining.
What does the first stage oxygen pressure regulator do?
Reduces high pressure from the cylinder to a more manageable intermediate pressure.
What is the typical pressure output from the first stage regulator?
Around 45-50 psi.
What is the function of the second stage oxygen pressure regulator?
Reduces intermediate pressure to a low, constant working pressure.
What is the typical working pressure output from the second stage regulator for oxygen?
Around 16 psi.
What does the oxygen flush valve do?
Delivers oxygen directly to the breathing circuit at a high flow rate.
What is the typical flow rate provided by the oxygen flush valve?
Around 35-75 liters per minute.
What is the function of the oxygen failure cutoff valve?
Automatically cuts off or reduces the flow of other gases when oxygen pressure falls below a threshold.
What does the inspiratory one-way valve prevent?
Prevents exhaled gases from re-entering the inspiratory limb of the circuit.
What does the expiratory one-way valve allow?
Allows the flow of gases away from the patient during exhalation.
Fill in the blank: The oxygen flush valve is used for _______.
[rapidly increasing oxygen concentration in the patient’s breathing circuit]
True or False: The Bourdon gauge requires a power source to operate.
False
What is the safety implication of the inspiratory one-way valve?
Ensures patients breathe fresh gas with each inhalation.
What is the function of the expiratory one-way valve?
Allows the flow of gases away from the patient during exhalation
It opens during exhalation to let exhaled gases exit the lungs.
How does the expiratory one-way valve prevent inhalation of exhaled gases?
The valve closes on inhalation
This prevents the patient from inhaling their exhaled gases.
What are the safety implications of the expiratory one-way valve?
- Avoids rebreathing of exhaled gases
- Maintains circuit integrity
Crucial for adequate oxygenation and carbon dioxide removal.
What is the purpose of the Adjustable Pressure Limiting (APL) valve?
Controls pressure within the breathing circuit
It adjusts resistance to gas flow out of the circuit.