Anaesthesia Machine Quizz - anaesthesianotes

Welcome to your Anaesthesia Machine Quizz

1.

Which component of the anaesthesia machine is responsible for delivering oxygen to the patient during induction?

Vaporizers

Flowmeter

Boyle's machine

Pressure-regulating valve

2.

The function of the scavenging system in an anaesthesia machine is to:

Deliver volatile anesthetics

Remove waste gases from the operating room

Control the oxygen supply

Monitor the patient’s ventilation

3.

In a Boyle's machine, which of the following is used to control the pressure of oxygen delivered to the patient?

Regulator valve

Flowmeter

Vaporizers

Adjustable pressure-limiting valve

4.

What is the purpose of the oxygen flush valve in an anaesthesia machine?

To reduce the flow of oxygen to the patient

To deliver a large volume of oxygen quickly to the patient

To control the pressure of the oxygen cylinder

To regulate the concentration of anesthetic agents

5.

Which of the following is true about a modern anaesthesia workstation?

It typically uses a single-cylinder system for oxygen delivery

It combines the functions of gas delivery, monitoring, and ventilatory support

It operates solely on pipeline gases, with no need for oxygen cylinders

It does not require a vaporizor for volatile anesthetic administration

6.

What is the minimum oxygen flow required for a safe operation of a Boyle's machine?

2 L/min

4 L/min

6 L/min

10 L/min

7.

Which of the following vaporizers is considered a ‘variable bypass’ type?

Ohmeda 5

Dräger

Tec 6

Tec 7

8.

In an anaesthesia machine, what is the primary function of a vaporizer?

To mix gases

To deliver anesthetic agents in a controlled concentration

To increase the pressure of oxygen

To regulate the patient’s body temperature

9.

Which safety feature prevents the wrong gas from being delivered to the patient in an anaesthesia machine?

Check valve

Pin-indexing system

Vaporizer lock

Flowmeter alarms

10.

What does the term "back pressure compensation" refer to in the context of an anaesthesia vaporizer?

The ability to adjust the concentration of anesthetic based on the patient's ventilation

The vaporizer's ability to maintain constant output despite changes in circuit pressure

The ability of the vaporizer to automatically regulate the gas flow

The vaporizer’s ability to maintain constant temperature

11.

What is the primary difference between the 'continuous flow' and 'variable bypass' types of vaporizers?

Continuous flow vaporizers deliver more anesthetic, leading to faster induction

Variable bypass vaporizers allow for higher precision in gas concentration

Continuous flow vaporizers are more susceptible to fluctuations in patient ventilation

Variable bypass vaporizers require a higher oxygen flow rate

12.

Which of the following gases is most commonly delivered via the anaesthesia machine pipelines?

Nitrous oxide

Nitrogen

Oxygen

Carbon dioxide

13.

In Boyle's machine, what is the primary function of the ventilator?

To monitor the patient's respiratory rate

To provide positive pressure ventilation

To administer anesthetic gases

To maintain oxygen levels in the breathing circuit

14.

The presence of a ‘pressure relief valve’ in an anaesthesia machine is to:

Prevent over-pressurization of the breathing circuit

Regulate the concentration of anesthetic agents

Control the flow of oxygen into the patient’s lungs

Adjust the volume of the breathing bag

15.

Which of the following is the primary purpose of the ‘fail-safe’ system in an anaesthesia machine?

To prevent incorrect gas delivery if a pipeline supply is lost

To regulate the flow of anesthetic agents

To control the scavenging system pressure

To monitor patient’s end-tidal CO2 levels

16.

Which of the following is a key safety feature of the modern anaesthesia machine related to the oxygen supply?

Oxygen analyzer with an alarm

Anesthetic vaporizer lock

High-pressure alarm

Oxygen flush valve

17.

What happens if the oxygen supply pressure in an anaesthesia machine pipeline falls below the required level?

The machine will automatically switch to nitrous oxide

The fail-safe system will shut off the nitrous oxide supply

The vaporizers will automatically increase the anesthetic concentration

A pressure gauge will display a low oxygen warning, and the machine will stop functioning

18.

The ventilator in an anaesthesia machine typically uses which mode of ventilation for mechanical ventilation?

Volume-controlled ventilation

Pressure-controlled ventilation

Synchronized intermittent mandatory ventilation (SIMV)

All of the above

19.

In the context of anaesthesia machines, what does the term ‘vaporizer interlock’ refer to?

A system that ensures only one anesthetic agent is vaporized at a time

A system that prevents the over-pressurization of the vaporizer

A safety feature that locks the vaporizer in place to prevent disconnection

A feature that maintains the temperature of the anesthetic vaporizer

20.

In a modern anaesthesia workstation, the function of the "bagging" system is to:

Deliver pressurized oxygen directly into the lungs

Ensure the precise concentration of anesthetic gases

Manually assist the patient's ventilation if required

Monitor the end-tidal CO2 levels during surgery

21.

Which of the following statements regarding pipeline gas supplies is true?

Pipeline gases are less reliable than cylinder gases due to their high risk of contamination.

Pipeline systems are typically only used in very large hospitals or surgical centers.

A manifold system is used to store large volumes of pipeline gas in the hospital.

All pipeline gases are stored at the same pressure, typically 2000 psi.

22.

Which of the following is a potential hazard of using a Boyle's machine for anesthesia?

Accidental hypoxia due to inadequate oxygen supply

Excessive pressure from the ventilator causing barotrauma

Incorrect anesthetic concentration due to vaporizer malfunction

All of the above

23.

What is the role of a check valve in the anaesthesia machine?

To prevent the backflow of gases into the oxygen supply

To regulate the flow of anesthetic gases to the patient

To maintain a steady pressure in the breathing circuit

To measure the volume of exhaled gases

24.

What is the maximum capacity of a standard E-size oxygen cylinder?

. 300 liters

500 liters

600 liters

1000 liters

25.

Which of the following best describes the function of a "bypass" circuit in an anaesthesia machine?

To prevent waste gas from entering the breathing circuit

To divert a portion of the flow around the vaporizer and into the breathing circuit

To assist with mechanical ventilation

To increase the oxygen concentration during emergencies

26.

Which of the following best describes the mechanism of action of the oxygen pressure regulator in an anaesthesia machine?

It reduces the pressure from the pipeline supply to a safe working level for delivery to the patient.

It regulates the oxygen flow through the vaporizers.

It prevents gas from flowing back into the oxygen cylinder

It monitors the concentration of oxygen delivered to the patient

27.

In an anaesthesia machine, the ventilator’s "volume control" mode delivers a set tidal volume regardless of the pressure required to achieve it. Which of the following could lead to inadequate ventilation in this mode?

A blocked endotracheal tube

A malfunctioning oxygen flowmeter

Increased lung compliance

A high inspiratory flow rate

28.

Which of the following is a potential consequence of a malfunctioning "vaporizer temperature compensation" system in an anaesthesia machine?

The anesthetic agent concentration could be too low during a cold ambient temperature.

The oxygen flow rate could decrease dramatically.

The patient may experience rapid breathing due to hyperventilation.

29.

A patient undergoing surgery in the prone position develops signs of hypoxia despite an adequate oxygen flow rate. Which of the following should be the first step in management?

Increase the oxygen flow rate to maximum

Check for a disconnection or leak in the breathing circuit

Increase the anesthetic agent concentration

Administer intravenous fluids

30.

When using an anaesthesia machine with a "closed-loop" ventilation system, what is the primary function of the system?

To automatically adjust the ventilatory rate based on blood gas measurements

To continuously monitor and adjust the oxygen concentration in the breathing circuit

To adjust the pressure delivered during mechanical ventilation based on patient respiratory effort

To automatically deliver anesthetic agents in a predetermined proportion to oxygen and nitrous oxide

31.

A critical failure of the oxygen supply pipeline in an anaesthesia machine triggers the fail-safe system. Which of the following occurs next?

Nitrous oxide flow is increased to compensate for the oxygen loss.

A warning light appears, and an alarm sounds to alert the anaesthesiologist.

The system automatically switches to a backup cylinder of oxygen.

The anesthetic agent flow is cut off to avoid a potentially dangerous mixture.

32.

Which of the following is a potential consequence of the "hypoxic guard" mechanism malfunction in an anaesthesia machine?

The anesthetic concentration could increase dangerously

The patient may experience hypoxia despite normal oxygen flow

The gas flowmeter could be completely shut off

The ventilator may fail to synchronize with patient breathing efforts

33.

Which of the following is the most important factor affecting the performance of a vaporizer when used with a high fresh gas flow rate?

The concentration of anesthetic agent in the vaporizer

The temperature of the anesthetic agent

The type of anesthetic agent used

The presence of a back pressure compensation system

34.

Which of the following safety features is designed to prevent the accidental administration of a hypoxic mixture during anaesthesia?

The oxygen flush valve

The fail-safe system

The hypoxic guard mechanism

The oxygen analyzer

35.

What is the purpose of the "bypass" circuit in a vaporizer system?

To prevent waste gases from entering the breathing circuit

To adjust the flow of fresh gas to achieve the desired oxygen concentration

To divert a portion of the gas away from the vaporizer and into the breathing circuit

To increase the concentration of anesthetic agent in the gas mixture

36.

A malfunctioning oxygen pressure sensor on an anaesthesia machine leads to an incorrect oxygen flow reading. Which of the following is most likely to occur?

The fail-safe system will automatically increase the oxygen supply

The oxygen analyzer will alarm to indicate a discrepancy in oxygen concentration

The oxygen flow will be automatically reduced to prevent over-oxygenation

The ventilator may begin delivering suboptimal volumes of air

37.

Which of the following factors most directly influences the efficiency of the oxygen concentrator in an anaesthesia machine?

The ambient temperature

The oxygen flow rate

The fresh gas flow rate

The oxygen sensor calibration

38.

What is the most likely outcome if the vaporizer is set to deliver a lower-than-intended concentration of volatile anesthetic?

The patient may experience deeper anesthesia

The patient may remain awake and responsive

The patient's blood pressure will drop significantly

The depth of anesthesia will be unchanged, but recovery will be prolonged

39.

A mechanical ventilator on an anaesthesia machine is set to deliver a tidal volume of 500 mL at a rate of 12 breaths per minute. What is the minute ventilation?

3.0 L/min

6.0 L/min

8.0 L/min

10.0 L/min

40.

The "manifold" in an anaesthesia machine is used for which of the following?

To deliver fresh gas flow to the patient

To store and regulate pipeline gases

To monitor the patient's end-tidal CO2 levels

To increase the oxygen concentration in the gas mixture

41.

. In an anaesthesia machine, what is the primary function of the "oxygen flush valve"?

To allow rapid delivery of oxygen directly into the breathing circuit

To increase the concentration of the anesthetic agent in the circuit

To bypass the vaporizer and flush the system with fresh gas

To increase the pressure in the circuit during mechanical ventilation

42.

Which of the following would most likely cause an inaccurate reading on an oxygen analyzer in an anaesthesia machine?

A malfunctioning oxygen pressure regulator

Incorrect calibration of the analyzer

High fresh gas flow rate

A leak in the breathing circuit

43.

What is the mechanism of action of the "dual flowmeter" system found in some modern anaesthesia machines?

It allows separate control of the flow of oxygen and nitrous oxide to maintain a fixed ratio

It provides continuous monitoring of both the gas pressures and concentrations

It adjusts the fresh gas flow based on patient respiratory effort

It ensures a steady oxygen-nitrous oxide mixture by compensating for fluctuations in flow

44.

Which of the following is the key purpose of the “pressure relief valve” in an anaesthesia machine's breathing circuit?

To prevent excess pressure from reaching the patient’s lungs

To ensure a continuous supply of oxygen during mechanical ventilation

To maintain constant anesthetic vapor concentration during fluctuations in gas flow

To control the scavenging of waste gases from the circuit

45.

Which component of an anaesthesia machine is specifically designed to prevent the delivery of a hypoxic mixture if oxygen flow is interrupted?

Fail-safe valve

Oxygen analyzer

Hypoxic guard mechanism

Gas scavenging system

46.

If an anaesthesia machine is delivering a mixture of gases at an increased fresh gas flow rate, what is most likely to occur?

The anesthetic agent concentration will increase

The patient's carbon dioxide levels will rise

The machine’s scavenging system will become overwhelmed

The anesthetic agent concentration may decrease

47.

Which of the following is the most likely effect if the "pressure-compensated" vaporizer fails during an anesthetic procedure?

The concentration of anesthetic agent delivered to the patient could vary with changes in the fresh gas flow rate

The machine will automatically shut off the flow of anesthetic agent

The oxygen supply will be automatically increased to compensate

The anesthetic agent concentration will remain constant regardless of fresh gas flow

48.

Which of the following best describes the relationship between the "vaporizer dial" setting and the actual concentration of anesthetic agent delivered during high fresh gas flow rates?

The delivered concentration remains the same regardless of flow rate due to the design of the vaporizer

The concentration delivered decreases as the fresh gas flow rate increases. C. The concentration increases with higher fresh gas flow rates

The concentration increases with higher fresh gas flow rates

The vaporizer will automatically adjust to deliver a constant concentration based on fresh gas flow

49.

A leak in the "circuit" of an anaesthesia machine can result in which of the following outcomes?

A decrease in the delivery of anesthetic agent to the patient

Increased resistance to ventilation during mechanical ventilation

A change in the composition of the anesthetic gases delivered to the patient

All of the above

50.

In an anaesthesia machine, the "bypass" circuit of the vaporizer performs which of the following functions?

It helps control the vaporizer temperature

It diverts a portion of the fresh gas flow around the vaporizer

. It increases the anesthetic agent concentration when fresh gas flow is high

It ensures constant mixing of oxygen and nitrous oxide at a fixed ratio

51.

When using an anaesthesia machine, which of the following statements about the "low-pressure" system is correct?

The low-pressure system is only involved in gas delivery during mechanical ventilation

The low-pressure system connects to the vaporizer and the patient breathing circuit but not to the oxygen pipeline

The low-pressure system includes components from the flowmeters to the patient’s airway, but not the gas supply

The low-pressure system includes all components that provide oxygen and anesthetic gases directly to the patient

52.

Which of the following devices in the anaesthesia machine is most responsible for ensuring the correct concentration of volatile anesthetic delivered to the patient?

The oxygen analyzer

The vaporizer

The breathing bag

53.

A patient undergoing surgery has a faulty oxygen supply from the pipeline. Which of the following mechanisms will the anaesthesia machine most likely use to switch to backup oxygen supply?

The backup oxygen cylinder is automatically activated by the fail-safe system

A manual switch is needed to switch from pipeline to cylinder supply

The oxygen analyzer alarms and triggers an automatic switch to backup oxygen supply

The machine will continue operating normally without an oxygen pipeline connection

54.

In an anaesthesia machine, what is the main purpose of the "oxygen pressure failure" alarm system?

To alert the clinician when the oxygen flow is too high

To monitor for leaks in the breathing circuit

To alert the clinician when the oxygen pressure drops below a preset level, signaling a failure in the supply

To measure the end-tidal oxygen concentration during ventilation

55.

Which of the following statements is true regarding the "vaporizer" in an anaesthesia machine?

It can increase the concentration of anesthetic agent in the fresh gas flow when the flow rate is low

It is unaffected by changes in temperature and pressure within the machine

It uses the principle of liquid-vapor equilibrium to control the anesthetic agent concentration

The vaporizer only operates when the patient is actively being ventilated

56.

What is the primary function of the "exhalation valve" in an anaesthesia machine?

To ensure that the fresh gas mixture is delivered to the patient during inspiration

To allow exhaled gas to exit the breathing circuit during expiration, preventing rebreathing of carbon dioxide

To increase the pressure in the circuit during mechanical ventilation

To monitor the exhaled gases for end-tidal CO2 and anesthetic concentration

57.

In an anaesthesia machine, which of the following would most likely cause an "oxygen-nitrous oxide" mixture to become hypoxic?

Failure of the hypoxic guard mechanism

An increase in the nitrous oxide flow rate

A decrease in the oxygen flow rate below the minimum safe level

A malfunction of the oxygen flush valve

58.

Which of the following components is responsible for controlling the flow of anesthetic gases in the "high-pressure" system of the anaesthesia machine?

The flowmeter

The pressure regulator

The vaporizer

The oxygen flush valve

59.

Which of the following would most likely result from a "malfunctioning pressure relief valve" in the anaesthesia machine?

Increased risk of barotrauma due to excessive pressure in the breathing circuit

A sudden loss of oxygen supply to the patient

A leak in the anesthesia circuit, leading to gas wastage

Decreased fresh gas flow to the patient

60.

What is the primary role of the "bypass" mechanism in the vaporizer of an anaesthesia machine?

To reduce the fresh gas flow rate to minimize waste gas production

To allow a portion of the fresh gas to bypass the vaporizer and reach the breathing circuit directly

To ensure that the anesthetic agent is vaporized more effectively at higher flow rates

To automatically adjust the anesthetic concentration based on the patient’s blood pressure

61.

Which of the following is the primary purpose of the "pressure regulator" in an anaesthesia machine?

To convert the high-pressure gas from the cylinder into a lower, manageable pressure

To mix oxygen and nitrous oxide gases in precise concentrations

To deliver gases to the breathing circuit at a set flow rate

To monitor the gas levels in the cylinders and trigger an alarm when low

62.

In an anaesthesia machine, how is the pressure of oxygen gas in the cylinder monitored?

By the oxygen analyzer

By the oxygen pressure gauge on the cylinder regulator

By the flowmeter valve

By the backup oxygen cylinder alarm system

63.

What is the main concern when the "fail-safe valve" in the oxygen pipeline is activated during a loss of oxygen supply from the cylinder?

The nitrous oxide supply will be automatically shut off to prevent a hypoxic mixture

The anesthetic concentration will increase to dangerous levels

The oxygen flow will be automatically increased to compensate

The machine will continue operating normally despite a potential oxygen shortage

64.

What happens when a "full oxygen cylinder" is connected to an anaesthesia machine, but the cylinder valve is not fully opened?

The oxygen flow rate will be normal but may be difficult to control

There will be no flow of oxygen to the machine

The pressure regulator will compensate for the low oxygen flow

The backup oxygen cylinder will automatically take over the supply

65.

Which of the following statements about "cylinder markings" is accurate?

The markings on an oxygen cylinder indicate the weight of the gas inside

The markings on the cylinder specify the contents and the maximum safe pressure

The markings are for decorative purposes only and have no functional value

66.

What is the purpose of the "safety relief valve" in an anaesthesia cylinder?

To prevent overfilling of the cylinder beyond its safe capacity

To allow excess gas to escape if the cylinder's pressure exceeds the maximum safe level

To regulate the flow of gas into the anaesthesia machine

To shut off the flow of gas in the event of an emergency

67.

Which of the following is a key feature of the "color coding" system for gas cylinders used in anaesthesia machines?

To help easily identify the size of the cylinder

To indicate the exact pressure of the gas in the cylinder

To identify the type of gas contained in the cylinder, reducing the risk of incorrect gas administration

To differentiate between full and empty cylinders

68.

In an anaesthesia machine, if the oxygen cylinder is depleted, which of the following actions will most likely occur automatically to prevent hypoxia?

The machine will switch to using the pipeline oxygen supply

The backup oxygen cylinder will activate and deliver oxygen to the patient

The machine will stop delivering any gases to prevent harm

The flow of nitrous oxide will be reduced to compensate for the lack of oxygen

69.

A "carbon dioxide" cylinder is being used in an anaesthesia machine for insufflation purposes. Which of the following is the most important safety feature to prevent incorrect usage?

A dedicated regulator designed for carbon dioxide use

A color-coded regulator to match the carbon dioxide cylinder color

A flowmeter exclusively for carbon dioxide gas

A safety valve to prevent excess pressure in the cylinder

70.

Which of the following factors can affect the "pressure reading" on a gas cylinder in an anaesthesia machine?

The temperature of the gas inside the cylinder

The amount of anesthetic agent in the vaporizer

The flow rate set on the flowmeter

The size of the cylinder

71.

If the "cylinder pressure gauge" on a nitrous oxide cylinder reads as "full," but no gas is coming out, what is the most likely cause?

The flowmeter is not properly connected to the cylinder

The cylinder valve is not fully opened

The cylinder is empty, but the pressure gauge is faulty

The nitrous oxide has solidified inside the cylinder

72.

What is the function of the "oxygen flush valve" on the anaesthesia machine when a gas cylinder is in use?

It delivers a high flow of oxygen directly into the breathing circuit, bypassing the vaporizer

It regulates the flow of oxygen to the flowmeter to maintain consistent oxygen delivery

It limits the pressure of oxygen to the patient to prevent barotrauma

It ensures that a hypoxic mixture is avoided by cutting off nitrous oxide if oxygen flow is low

73.

What is the primary reason for a "yoke" system on gas cylinders in an anaesthesia machine?

To ensure easy replacement of an empty cylinder

To allow cylinders to be connected without threading

To ensure a stable and secure connection between the cylinder and the machine, preventing leaks

To regulate the pressure of gas entering the anaesthesia machine

74.

Which of the following is the main purpose of a "reduced pressure valve" in the high-pressure system of an anaesthesia machine?

To prevent excessive oxygen delivery to the patient

To regulate the pressure of the cylinder and reduce it to a safe level for the rest of the system

To maintain a constant flow rate of gases

To allow gases to flow continuously from the cylinder into the vaporizers

75.

What is the function of a "burst disc" in a gas cylinder, and why is it important in anaesthesia machines?

It automatically regulates the flow of oxygen when the cylinder is overfilled

It provides an emergency oxygen supply in case the pipeline fails

It is a safety mechanism that allows excess gas to vent if the cylinder pressure exceeds a dangerous threshold

It filters impurities from the gas before it enters the anaesthesia machine

76.

A patient is receiving anaesthesia from an anaesthesia machine with a full oxygen cylinder. What happens when the cylinder reaches the "empty" mark, but the flow of oxygen continues?

The oxygen flow will automatically stop, and the backup cylinder will take over

The flow of oxygen will decrease due to the pressure drop in the cylinder, and a backup system will trigger an alarm

The oxygen flow will continue at the same rate until the cylinder is completely depleted

77.

What does the "DISS" (Diameter Index Safety System) ensure in the anaesthesia machine’s cylinder connections?

It prevents misconnection between different types of gas cylinders by using a unique threaded connection for each type

It prevents the regulator from over-pressurizing the system

It allows the oxygen flow to be manually adjusted to control delivery to the patient

It indicates when the cylinder is reaching the empty state by color changes

78.

What is the primary function of the "prevalve" in an oxygen cylinder assembly of an anaesthesia machine?

To ensure the cylinder’s contents are vaporized before entering the machine

To adjust the flow rate of oxygen to the breathing circuit based on patient demand

To regulate the pressure of the gas from the cylinder before it enters the machine’s pressure regulator

To monitor the oxygen content of the cylinder and trigger an alarm when low

79.

Which of the following gas cylinders in the anaesthesia machine is most likely to show a pressure reading that does not significantly change until the cylinder is nearly empty?

Oxygen cylinder

Nitrous oxide cylinder

Carbon dioxide cylinder

Medical air cylinder

80.

Which of the following is a key safety feature of the "pin-index safety system" (PISS) used in anaesthesia cylinders?

It prevents a cylinder from being overfilled during refilling

It prevents accidental mixing of gases by using unique pin configurations for different gas types

It regulates the flow of gases through the flowmeter

It automatically adjusts the oxygen pressure in response to fluctuations in patient demand

81.

What happens when the "cylinder valve" on a gas cylinder is not fully closed after use in an anaesthesia machine?

The oxygen supply to the patient will be cut off immediately

The gas will leak out of the cylinder, leading to potential waste and safety concerns

The flowmeter will automatically adjust to compensate for the leak

The backup oxygen supply will automatically activate

82.

Which of the following statements is true regarding the "oxygen-nitrous oxide ratio" system in anaesthesia cylinders?

The flow of nitrous oxide is automatically reduced if oxygen pressure drops below a set level

The flow of oxygen is controlled by the dial on the nitrous oxide cylinder

The oxygen flow is independent of the nitrous oxide supply

Nitrous oxide will be delivered even if the oxygen flow is too low to support life

83.

What is the "barometric pressure" in relation to gas cylinders in the anaesthesia machine?

The pressure inside the cylinder relative to atmospheric pressure

The total pressure exerted by the gases inside the cylinder

The atmospheric pressure outside the cylinder, which affects the flow rate

The pressure exerted by the cylinder to prevent leakage of gas into the atmosphere

84.

Which gas cylinder has the highest risk of over-pressurization and requires the most stringent safety checks in anaesthesia machines?

Oxygen cylinder

Nitrous oxide cylinder

Medical air cylinder

Carbon dioxide cylinder

85.

Which of the following is the most critical factor that determines the "duration of use" of a gas cylinder in an anaesthesia machine?

The type of gas stored in the cylinder

The cylinder's pressure rating

The flow rate set on the flowmeter

The size and volume of the cylinder

86.

In an anaesthesia machine, the "fail-safe valve" is designed to do which of the following when there is a failure of the oxygen supply?

Automatically switch to the backup oxygen cylinder

Cut off the flow of nitrous oxide to prevent a hypoxic mixture

Provide a continuous flow of oxygen through the vaporizers

Increase the concentration of anesthetic gases to maintain effect

87.

What is the significance of the "vacuum system" in an anaesthesia machine, especially in relation to cylinder usage?

It removes excess gas from the anaesthesia machine to prevent contamination

It provides an alternative source of oxygen if the primary supply fails

It allows the removal of waste gases from the operating room, ensuring a safe environment

It is used to increase the pressure in the cylinders during high-demand procedures

88.

What is the "decompression valve" in a gas cylinder used for in an anaesthesia machine?

To prevent the gas from exceeding a set pressure in the cylinder

To regulate the flow of oxygen to the ventilator

To allow excess gas to escape and relieve pressure in case of over-pressurization

To maintain a constant flow of nitrous oxide to the vaporizers

89.

When using a "multiple-cylinder" system in an anaesthesia machine, which of the following mechanisms ensures a seamless switch between cylinders?

The pressure gauge on the regulator automatically switches the cylinder when it’s empty

The cylinder with the lowest pressure is automatically isolated and shut off

The flowmeter automatically increases the flow to maintain the same delivery pressure

The gas supply from both cylinders is combined into a single flowline until one cylinder is depleted

90.

Which of the following statements is correct regarding the "E-cylinder" in an anaesthesia machine?

The "E-cylinder" is the smallest cylinder used in anaesthesia machines and typically contains oxygen

E-cylinders are used for storing anesthetic agents in liquid form and are highly pressurized

E-cylinders are only used for medical air supply in the anaesthesia machine

91.

What is the primary purpose of the "reducing valve" in an oxygen cylinder when connected to an anaesthesia machine?

To prevent overfilling of the cylinder during refilling

To decrease the pressure of the oxygen from the cylinder to a safe level for use

To maintain a constant flow rate of oxygen regardless of cylinder pressure

To regulate the flow of nitrous oxide and oxygen in a specific ratio

92.

What is the function of the "Oxygen failure alarm" in an anaesthesia machine?

It triggers when the backup oxygen cylinder is depleted.

It sounds when the oxygen flowmeter reaches an unsafe level

It alerts the clinician when there is a decrease in oxygen pressure below a safe level

It automatically adjusts the gas mixture to maintain proper oxygen levels

93.

Which of the following best describes the role of the "pressure-compensated" flowmeter in anaesthesia machines?

It ensures that the flow of gas remains constant regardless of cylinder pressure

It regulates the pressure of gases within the breathing circuit

It automatically adjusts the flow of gas to match the patient’s respiratory demands

It automatically mixes oxygen and nitrous oxide at preset concentrations

94.

Why is the "shut-off valve" in an anaesthesia machine’s pipeline important?

It allows for the maintenance of a constant flow rate of oxygen and nitrous oxide

It prevents the backflow of gases into the pipeline from the anaesthesia machine

It isolates the anaesthesia machine from the pipeline in case of a pipeline gas failure

It regulates the flow of carbon dioxide during exhalation

95.

What is the typical safety feature included in the design of "high-pressure" anaesthesia cylinders to prevent mishandling?

A locking mechanism that requires a key to open the cylinder valve

A special gauge that measures the remaining volume of gas in real-time

A valve that automatically closes when the cylinder is disconnected

A pin-index system that prevents the incorrect connection of cylinders

96.

What happens if a "flowmeter" is set to an excessively high value in an anaesthesia machine using a gas cylinder?

The pressure in the pipeline will automatically adjust to accommodate the higher flow rate

The anaesthesia machine will automatically reduce the flow to prevent wastage of gases

The cylinder will empty rapidly, and the flow of gas may become inconsistent

The gas will bypass the vaporizers, and the patient will not receive any anesthetic agent

97.

What is the typical internal pressure of an "E-cylinder" used in anaesthesia machines for oxygen?

100 psi

1500 psi

3000 psi

4000 psi

98.

Which of the following is the most common gas used in anaesthesia cylinders that does not liquefy under normal pressure and temperature conditions?

Nitrous oxide

Oxygen

Medical air

Carbon dioxide

99.

What is the role of "color-coding" on anaesthesia gas cylinders?

To identify the type of gas stored in the cylinder for easy and quick identification

To indicate the purity of the gas in the cylinder

To regulate the pressure inside the cylinder

To prevent the cylinders from overheating during use

100.

Why is it important to check the "expiry date" on an anaesthesia cylinder before use?

To ensure the cylinder has not been overfilled

To ensure that the cylinder has been properly maintained and tested

To confirm the cylinder contains the correct gas mixture

To ensure that the gas is still at a proper pressure for safe use

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