Anesthesia Technology Exam Questions And Answers
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Which of the following comprises the low-pressure system?
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Flowmeter tubes
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Vaporizers
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Check valves
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Common gas outlet
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All of the above
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- 2.
What is the last safeguard before the gases reach the patient?
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ETT
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Thorpe tube
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Oxygen analyzer
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Capnograph
Correct Answer
A. Thorpe tubeExplanation
The Thorpe tube is the last safeguard before the gases reach the patient. The Thorpe tube is a device that is used to monitor and measure the flow of gases in a breathing circuit. It is typically located between the patient and the anesthesia machine. The Thorpe tube helps to ensure that the correct amount of gases is being delivered to the patient, and it can also detect any abnormalities or deviations in the gas flow. This allows for timely intervention and adjustment to prevent any potential harm to the patient.Rate this question:
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- 3.
When is an O2 analyzer reading erroneous?
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When an LMA is used
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A deflated ETT cuff
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When used with nasal cannula
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When it is used higher than sea level
Correct Answer
A. When used with nasal cannulaExplanation
An O2 analyzer reading can indeed be erroneous when used with a nasal cannula. This device is used to deliver supplemental oxygen and is not designed to create a closed system. Air can mix with the supplemental oxygen, especially if the flow rate is low or if the patient is breathing through their mouth, which dilutes the oxygen concentration. This mixture can lead to inaccurately high readings of ambient air and inaccurately low readings of oxygen levels. It's important to ensure that the analyzer is correctly positioned and that patient conditions and equipment use are adequately monitored to avoid such errors.Rate this question:
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- 4.
There are ____ sprockets on an oxygen flowmeter.
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10
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2
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14
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23
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I don't know I was never good at math
Correct Answer
A. 2Explanation
There are typically two sprockets on an oxygen flowmeter. These sprockets are part of the mechanism that helps regulate and measure the flow rate of oxygen being delivered. The specific number of sprockets can vary depending on the design and manufacturer of the flowmeter.Rate this question:
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- 5.
What is the minimum o2: N2O ration?
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1:1
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1:2
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1:3
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1:4
Correct Answer
A. 1:3Explanation
The minimum oxygen (O2) to nitrous oxide (N2O) ratio in anesthesia machines is typically 1:3. This safety feature is known as the oxygen-nitrous oxide ratio controller or fail-safe system. It ensures that nitrous oxide cannot be delivered without a minimum amount of oxygen. This ratio prevents hypoxia by guaranteeing that the patient receives at least 25% oxygen at all times during anesthesia, where oxygen is not less than one part to every three parts of nitrous oxide. The 1:3 ratio is a critical safety standard in anesthetic practices to maintain adequate oxygenation and prevent complications associated with low oxygen levels.Rate this question:
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- 6.
The purpose of the safety devices in the low flow system is:
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Increase the saturated vapor pressure
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Minimize the density of the gas
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Minimize turbulence throughout the system
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Decrease the risk of a hypoxic mixture
Correct Answer
A. Decrease the risk of a hypoxic mixtureExplanation
The purpose of safety devices in a low flow system is to decrease the risk of a hypoxic mixture. A hypoxic mixture refers to a gas mixture that has a lower concentration of oxygen than what is required for normal respiration. By having safety devices in place, such as oxygen sensors or alarms, the system can detect and prevent the occurrence of hypoxia, ensuring that the gas mixture delivered to the user is safe and contains an adequate amount of oxygen.Rate this question:
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- 7.
What is the method of regulating output concentration? choose all that apply
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Flow over
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Concentration calibrated
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Measure flow
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Bubble through
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Injection
Correct Answer(s)
A. Concentration calibrated
A. Measure flowExplanation
The method of regulating output concentration can be achieved by two approaches: concentration calibration and measuring flow. Concentration calibration involves adjusting the concentration of the output based on a pre-determined calibration curve or standard. Measuring flow, on the other hand, allows for the control of output concentration by precisely measuring the flow rate and adjusting it accordingly. Both of these methods are effective in regulating the output concentration.Rate this question:
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- 8.
What is the method of vaporization? choose all that apply
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Thermocompensation
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Flow over
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Injection
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Heat supplied
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Bubble through
Correct Answer(s)
A. Flow over
A. Injection
A. Bubble throughExplanation
The methods of vaporization include flow over, injection, and bubble through. Flow over refers to the process of passing a liquid over a heated surface to convert it into vapor. Injection involves injecting a liquid into a heated chamber or system to vaporize it. Bubble through involves introducing a gas or vapor through a liquid to create bubbles, which then evaporate and vaporize the liquid. These methods are all used to convert a liquid into vapor by applying heat or introducing gas or vapor into the system.Rate this question:
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- 9.
How is temperature compensated for with vaporizers. choose all that apply
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Thermocompensation
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Injection
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Flow over
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Plenum
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Supplied heat
Correct Answer(s)
A. Thermocompensation
A. Supplied heatExplanation
Temperature compensation in vaporizers is achieved through two methods: thermocompensation and supplied heat. Thermocompensation involves adjusting the vaporizer's output based on changes in temperature to maintain a consistent vapor pressure. This ensures that the vaporizer delivers the desired concentration of vapor regardless of temperature fluctuations. Supplied heat refers to the external heating provided to the vaporizer to maintain a constant temperature, which in turn ensures consistent vaporization. Therefore, both thermocompensation and supplied heat are necessary for accurate temperature compensation in vaporizers.Rate this question:
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- 10.
How is specificity related to specific vaporizers. choose all that apply
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Plenum
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Low resistance
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Agent specific
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Injection
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Multiple agent
Correct Answer(s)
A. Agent specific
A. Multiple agentExplanation
Specificity refers to the ability of a vaporizer to deliver a specific agent or multiple agents accurately and consistently. In the context of specific vaporizers, "agent specific" means that the vaporizer is designed to deliver a specific agent, ensuring precise administration of that particular substance. On the other hand, "multiple agent" indicates that the vaporizer is capable of delivering multiple agents, allowing for the administration of different substances as required. Therefore, both "agent specific" and "multiple agent" are related to specificity in specific vaporizers.Rate this question:
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- 11.
How is resistance classified with specific vaporizers? choose all that apply
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High resistence
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Agent specific
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Measured flow
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Plenum
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Low resistence
Correct Answer(s)
A. Plenum
A. Low resistenceExplanation
Resistance is classified with specific vaporizers based on two factors: plenum and low resistance. A plenum is a chamber that holds the vaporizing agent, and it is an important component in vaporizers. Low resistance is another classification, indicating that the vaporizer has a low level of resistance to the flow of the agent. Therefore, both plenum and low resistance are correct classifications for resistance with specific vaporizers.Rate this question:
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- 12.
Name the gas that we use as a carrier gas for agents.
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Air
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N2O
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Oxygen
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CO
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CO2
Correct Answer
A. OxygenExplanation
Oxygen is the main gas used with anesthetic agents during medical procedures. It's important because it ensures the patient gets enough oxygen to breathe safely while they are asleep from the anesthesia. Oxygen helps carry the anesthesia through the body and keeps the patient's oxygen levels stable during surgery.Rate this question:
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- 13.
Modern vaporizers are within the breathing circuit. True or false?
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True
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False
Correct Answer
A. FalseExplanation
Modern vaporizers are not within the breathing circuit; they are outside the breathing circuit. This setup is known as "out of circuit." The design helps control the concentration of anesthetic agent more accurately as it vaporizes and mixes the anesthetic gas with fresh gas (like oxygen) before it enters the breathing circuit. This method is safer and provides better control over the amount of anesthesia a patient receives.Rate this question:
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- 14.
What is a vaporizer interlock mechanism?
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Prevents the vaporizer from falling to floor and releasing its contents
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Prevents the wrong agent from being placed into the vaporizer
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Allows specific flowover to the breathing circuit
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Prevents more than 1 vaporizer to be turned on at one time
Correct Answer
A. Prevents more than 1 vaporizer to be turned on at one timeExplanation
A vaporizer interlock mechanism is a safety feature that prevents more than one vaporizer from being turned on at the same time. This is important because having multiple vaporizers operating simultaneously can lead to incorrect agent delivery and potentially harmful effects on the patient. By limiting the activation of multiple vaporizers, the interlock mechanism ensures that only one vaporizer is in use at any given time, promoting patient safety and accurate administration of anesthesia.Rate this question:
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- 15.
The main purpose of the circle system is:
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To allow rapid transition to ambu bag
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To prevent rebreathing of CO2
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To help the scavenger system
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All of the above
Correct Answer
A. To prevent rebreathing of CO2Explanation
The main purpose of the circle system is to prevent rebreathing of CO2. This system ensures that exhaled gases are effectively removed from the patient's respiratory system and not inhaled again. By continuously delivering fresh gas and removing waste gases, the circle system helps maintain a safe and balanced gas mixture for the patient. This prevents the accumulation of CO2 in the respiratory system and ensures proper oxygenation during anesthesia. Additionally, the circle system also allows for a rapid transition to an ambu bag if needed and supports the scavenger system in removing waste gases from the operating room.Rate this question:
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- 16.
If the APL valve is open and the ventilation bag squeezed where will all of it contents go
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Scavenger system
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The patient
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The circle system
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To the hospital gas supply
Correct Answer
A. Scavenger systemExplanation
When the APL valve is open and the ventilation bag is squeezed, the contents of the bag will be directed towards the scavenger system. The scavenger system is responsible for removing waste gases from the breathing circuit and expelling them safely outside the operating room. Therefore, when the APL valve is open, any excess gas from the bag will be directed towards the scavenger system for proper disposal.Rate this question:
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- 17.
The approximate water content of Soda Lime is
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10-12%
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12-14%
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14-19%
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23-37%
Correct Answer
A. 14-19%Explanation
Soda Lime is a substance commonly used in laboratories to absorb carbon dioxide. It is a mixture of sodium hydroxide and calcium hydroxide. The approximate water content of Soda Lime is 14-19%. This means that for every 100 grams of Soda Lime, there is approximately 14-19 grams of water. The water content is important to consider because it can affect the performance and effectiveness of Soda Lime in absorbing carbon dioxide.Rate this question:
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- 18.
Which of the following are ventilator components?
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Safety release valve
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Driving gas supply
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Injector
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Bellows assembly
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All of the above
Correct Answer
A. All of the aboveExplanation
The correct answer is "all of the above". All of the mentioned components - safety release valve, driving gas supply, injector, and bellows assembly - are indeed ventilator components. Each of these components plays a crucial role in the functioning of a ventilator. The safety release valve ensures the safe release of excess pressure, the driving gas supply provides the necessary gas for ventilation, the injector controls the flow of gas, and the bellows assembly helps in the delivery of breaths to the patient.Rate this question:
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- 19.
The standard size in the U.S. for a scavenger system hose is ________.
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19mm
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20mm
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30mm
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33mm
Correct Answer
A. 19mmExplanation
The standard size for a scavenger system hose in the U.S. is 19mm. This size is used to make sure the scavenging system works right. The scavenger system removes extra gases from areas where medical staff work, keeping the air safe. The 19mm hose is specially sized to fit the equipment used in medical settings, helping to efficiently capture and remove unwanted gases.Rate this question:
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- 20.
Define regulations
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Accepted methods of practice
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Legal mandate
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Micro-adjustments to the vaporizer
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Who cares I am just a SRNA
Correct Answer
A. Legal mandateExplanation
The term "regulations" refers to rules or guidelines that are set by a governing body or authority. These regulations serve as a legal mandate, meaning they are legally required to be followed. In this context, regulations can be seen as accepted methods of practice that must be adhered to. The phrase "Micro-adjustments to the vaporizer" and the statement "Who cares I am just a SRNA" are unrelated and do not provide any relevant information to explain the correct answer.Rate this question:
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- 21.
What are standards?
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Accepted methods of practice
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Legal mandates
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Based upon the MAC of a volatile agent
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FIU let Chris into the CRNA program, they obviously have no standards, then why should I!
Correct Answer
A. Accepted methods of practiceExplanation
Standards refer to accepted methods of practice that are widely recognized and followed within a particular field or industry. These standards serve as guidelines for professionals to ensure that they are adhering to the best practices and providing quality services. They are not legal mandates but rather voluntary guidelines that professionals choose to follow. The statement about the MAC of a volatile agent is unrelated and does not provide any explanation for the correct answer.Rate this question:
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- 22.
Which of the following regulate gas cylinders?
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FDA
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NIOSH
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OSHA
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DOT
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MLBPA
Correct Answer
A. DOTExplanation
The Department of Transportation (DOT) regulates gas cylinders. They have established regulations and standards for the safe transportation, handling, and storage of hazardous materials, including gas cylinders. These regulations ensure that gas cylinders are manufactured, tested, and labeled properly, and that they are transported and stored in a safe manner to prevent accidents or leaks that could result in harm to people or the environment.Rate this question:
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- 23.
Which agency enforces a safe working environment?
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FDA
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NIOSH
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OSHA
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DOT
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MLBPA
Correct Answer
A. OSHAExplanation
OSHA, or the Occupational Safety and Health Administration, is the agency responsible for enforcing a safe working environment. They set and enforce standards to ensure that employers provide a safe and healthy workplace for their employees. OSHA conducts inspections, investigates complaints, and imposes penalties for violations of safety regulations. Their goal is to prevent work-related injuries, illnesses, and fatalities by promoting safe working conditions and providing education and training on workplace safety.Rate this question:
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- 24.
Name the agency that writes criteria for OSHA to enforce.
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FDA
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MLBPA
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NIOSH
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DOT
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NFPA
Correct Answer
A. NIOSHExplanation
NIOSH, the National Institute for Occupational Safety and Health, is the agency responsible for writing criteria for OSHA (Occupational Safety and Health Administration) to enforce. OSHA relies on NIOSH's research and recommendations to establish and enforce workplace safety regulations. NIOSH conducts studies, evaluates workplace hazards, and provides guidance to OSHA in order to protect workers' health and safety.Rate this question:
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- 25.
Which of these agencies writes standards for the prevention of fires?
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DOT
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FDA
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NIOSH
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NFPA
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OSHA
Correct Answer
A. NFPAExplanation
NFPA, or the National Fire Protection Association, is the agency that writes standards for the prevention of fires. They develop and publish codes and standards that are widely used and adopted by various organizations and industries to ensure fire safety. These standards cover a wide range of areas such as building construction, electrical systems, hazardous materials, and fire protection equipment. NFPA's standards are recognized and respected globally, making them a leading authority in fire prevention and safety.Rate this question:
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- 26.
Who handles most standards affecting anesthesia?
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FDA
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NIOSH
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ASTM
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CGA
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NFPA
Correct Answer
A. ASTMExplanation
ASTM, or the American Society for Testing and Materials, handles most standards affecting anesthesia. ASTM is an international organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services. They work closely with experts in the field to establish standards that ensure the safety and effectiveness of anesthesia equipment, procedures, and practices. By setting these standards, ASTM helps to promote uniformity and quality in the field of anesthesia.Rate this question:
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- 27.
Which of these are thw parts of the medical gas cylinder?
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Cylinder
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Valve
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Pressure Relief Device
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Conical Depression
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All of the above
Correct Answer
A. All of the aboveExplanation
The medical gas cylinder consists of several parts, including the cylinder itself, the valve, the pressure relief device, and the conical depression. Each of these components plays a crucial role in ensuring the safe storage and dispensing of medical gases. The cylinder holds the gas, the valve controls the flow, the pressure relief device prevents excessive pressure buildup, and the conical depression allows for easy connection to medical equipment. Therefore, all of the above options are correct.Rate this question:
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- 28.
What is the danger with Adiabatic compression?
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Icing of cylinder
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Rapid vaporization
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Fire hazard with recompression
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Fire hazard with decompression
Correct Answer
A. Fire hazard with recompressionExplanation
Adiabatic compression refers to the process of compressing a gas without any heat exchange with the surroundings. During this compression, the temperature of the gas increases significantly. The danger with adiabatic compression is that if the compressed gas is flammable or combustible, the high temperature can lead to a fire hazard when the gas is recompressed. The increase in temperature can cause the gas to reach its ignition point, resulting in a potential fire or explosion. Therefore, the correct answer is "Fire hazard with recompression."Rate this question:
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- 29.
What is the danger with Adiabatic expansion?
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Rapid vaporization
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Icing of cylinder
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Fire hazard with recompression
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An increase in volatile anesthetic delivery
Correct Answer
A. Fire hazard with recompressionExplanation
Adiabatic expansion refers to the process where a gas expands rapidly without any heat exchange with its surroundings. This can lead to a significant increase in temperature, which can potentially cause a fire hazard when the gas is recompressed. The rapid compression of the gas can ignite any flammable substances present, leading to a fire. Therefore, the danger associated with adiabatic expansion is the fire hazard that arises during the recompression process.Rate this question:
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- 30.
What is PISS?
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Diameter index safety system
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Premature induction sevoflurane system
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Pin index safety system
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How most Irishmen feel at the end of a week of CRNA school without drinking beer
Correct Answer
A. Pin index safety systemExplanation
The correct answer is Pin index safety system. The Pin index safety system is a safety mechanism used in medical gas cylinders to ensure that the correct gas is being delivered to the patient. It involves matching the pins on the cylinder valve with the corresponding holes on the regulator, preventing the accidental connection of the wrong gas. This system is crucial in preventing gas mix-ups and ensuring patient safety during medical procedures.Rate this question:
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- 31.
What is the PISS of O2?
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1,5
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2,5
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3,5
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4,5
Correct Answer
A. 2,5Explanation
The PISS (Pin Index Safety System) for oxygen (O2) is 2,5. This system uses a unique arrangement of pins on the gas yoke and corresponding holes on the gas cylinder to ensure that only the correct medical gas is connected to the appropriate gas supply system. For oxygen, the pins are set at positions 2 and 5, preventing accidental connections to other gas types and ensuring safe and proper use in medical settings.Rate this question:
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- 32.
What is the PISS of N2O?
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1,5
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2,5
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3,5
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4,5
Correct Answer
A. 3,5Explanation
The PISS (Pin Index Safety System) for nitrous oxide (N2O) is 3,5. This safety system uses pins arranged in specific positions to make sure that the correct gas cylinder is attached to its matching gas supply system in medical settings. For nitrous oxide, the pins are located at positions 3 and 5. This setup helps prevent the accidental connection of a nitrous oxide cylinder to a system meant for a different gas, ensuring safe and proper usage.Rate this question:
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- 33.
What is the PISS of Air?
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1,5
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2,5
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3,5
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4,5
Correct Answer
A. 1,5Explanation
The PISS (Pin Index Safety System) for medical air is 1,5. This system is designed with specific pin positions to ensure that only the correct gas cylinder is connected to the appropriate supply system. For medical air, the pins are located at positions 1 and 5. This setup helps prevent the accidental connection of a medical air cylinder to a system intended for another type of gas, ensuring safe and correct use in healthcare settings.Rate this question:
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- 34.
What is DISS?
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Diameter index safety system
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Pin index safety system
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Desflurane induction safety standards
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What a Super senior will do to you at the hospital after asking them a stupid question
Correct Answer
A. Diameter index safety systemExplanation
The correct answer is Diameter index safety system. The Diameter Index Safety System (DISS) is a standardized system used in medical gas delivery to ensure the proper connection and compatibility between gas cylinders and medical devices. It consists of specific fittings and connectors that prevent the accidental connection of incompatible gases, reducing the risk of gas mix-ups and potential hazards. The DISS system is commonly used in healthcare settings to ensure patient safety and the accurate delivery of medical gases.Rate this question:
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- 35.
What gases are liquid in their cylinders? Choose all that apply
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O2
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Air
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CO2
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N2O
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He
Correct Answer(s)
A. CO2
A. N2OExplanation
CO2 and N2O are gases that can exist in their liquid form when they are stored in cylinders under high pressure and low temperature conditions. This is because these gases have a lower boiling point compared to other gases listed. When the pressure is increased and the temperature is decreased, CO2 and N2O can condense into a liquid state inside the cylinders.Rate this question:
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- 36.
Which of the following is NOT a component of the anesthesia machine?
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Vaporizer
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Ventilator
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Defibrillator
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Scavenging system
Correct Answer
A. DefibrillatorExplanation
While a defibrillator is a crucial piece of equipment in an operating room, it is not a component of the anesthesia machine itself. The anesthesia machine primarily focuses on delivering a controlled mixture of anesthetic gases and oxygen to the patient, along with providing ventilation support. The vaporizer vaporizes liquid anesthetic agents, the ventilator assists or controls breathing, and the scavenging system removes waste gases. A defibrillator, on the other hand, is a separate device used to deliver an electric shock to restore a normal heart rhythm in cases of cardiac arrest.Rate this question:
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- 37.
How many liter of O2 are in a G cylinder?
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660
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1500
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1200
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5300
Correct Answer
A. 5300Explanation
A G cylinder of oxygen (O2) contains about 5,300 liters of gas. This large cylinder is often used in medical facilities to provide a substantial supply of oxygen. The measurement in liters helps medical staff know how much oxygen is available for use in various treatments and procedures, ensuring they have enough to meet the needs of patients without frequent replacements.Rate this question:
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- 38.
Define Vapor.
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The amount of pressure in a cylinder
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Conversion of a liquid to a gas
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Gas phase of a substance that is liquid at room temperature and atmospheric pressure
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All of the above
Correct Answer
A. Gas phase of a substance that is liquid at room temperature and atmospheric pressureExplanation
Vapor is defined as the gas phase of a substance that is normally in liquid form at room temperature and atmospheric pressure. This means that when a liquid reaches a certain temperature and pressure, it changes into a gas state, which is known as vapor. Therefore, the correct answer is "Gas phase of a substance that is liquid at room temperature and atmospheric pressure."Rate this question:
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- 39.
What is vaporization?
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The amount of pressure in a cylinder
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Conversion of a liquid to a gas
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Gas phase of a substance that is liquid at room temperature and atmospheric pressure
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All of the above
Correct Answer
A. Conversion of a liquid to a gasExplanation
Vaporization refers to the process of converting a liquid into a gas. This occurs when a substance's temperature reaches its boiling point, causing the molecules to gain enough energy to break free from their liquid state and enter the gaseous phase. The other options mentioned, such as the amount of pressure in a cylinder and the gas phase of a substance that is liquid at room temperature and atmospheric pressure, are not accurate definitions of vaporization.Rate this question:
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- 40.
Vaporization depends on what?
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Vapor pressure of the agent
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Temperature of the environment
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Amount of carrier gas used
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All of the above
Correct Answer
A. All of the aboveExplanation
Vaporization depends on the vapor pressure of the agent, which is the measure of how easily a substance evaporates. It also depends on the temperature of the environment, as higher temperatures increase the rate of vaporization. Additionally, the amount of carrier gas used can affect vaporization, as it can help carry the agent into a vaporized state. Therefore, all of these factors - vapor pressure, temperature, and amount of carrier gas - contribute to the process of vaporization.Rate this question:
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- 41.
Define volatile anesthetic agent.
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Molecules of a liquid that break away and enter the space at the top of the vaporizer
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Pressure created when the molecules bombard the walls of the containe
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Molecules entering the liquid phase
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Liquid that has a tendency to change to a vapor at standard temperature and pressure
Correct Answer
A. Liquid that has a tendency to change to a vapor at standard temperature and pressureExplanation
A volatile anesthetic agent refers to a liquid substance that has a tendency to change into a vapor form at standard temperature and pressure. This means that the molecules of the liquid have a high vapor pressure, causing them to easily evaporate and form a gas. This property is crucial in anesthesia as it allows the agent to be easily inhaled and distributed throughout the body, inducing and maintaining a state of unconsciousness during medical procedures.Rate this question:
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- 42.
What is the SVP of Sevo?
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175
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238
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160
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243
Correct Answer
A. 160Explanation
The Saturated Vapor Pressure (SVP) of sevoflurane (Sevo) is 160 mmHg at 20°C. SVP is a measure of how much a liquid anesthetic agent tends to evaporate at a given temperature. A lower SVP, like that of sevoflurane, indicates that it evaporates less aggressively compared to agents with a higher SVP. This characteristic affects how the anesthetic is administered and controlled during medical procedures, ensuring the agent vaporizes effectively at manageable levels.Rate this question:
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- 43.
What is the SVP of Isoflurane?
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238
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175
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160
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243
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660
Correct Answer
A. 238Explanation
The Saturated Vapor Pressure (SVP) of isoflurane is 238 mmHg at 20°C. SVP indicates the pressure at which a liquid anesthetic vaporizes into a gas at a specific temperature. Isoflurane's relatively high SVP means it vaporizes readily at room temperature, which is important for its effective use in anesthesia delivery systems. This property helps ensure that isoflurane can be efficiently and predictably delivered to maintain anesthesia during medical procedures.Rate this question:
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- 44.
What is the SVP of Des?
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23
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669
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238
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243
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175
Correct Answer
A. 669Explanation
The Saturated Vapor Pressure (SVP) of desflurane (Des) is approximately 669 mmHg at 20°C. Desflurane has a notably high SVP compared to other inhalation anesthetics, which means it vaporizes very easily at room temperature. This characteristic requires special vaporizers that can handle and accurately control its high vapor pressure, ensuring safe and effective delivery during anesthesia. Desflurane is used because it allows for rapid changes in anesthetic depth with fast recovery times, making it suitable for shorter procedures.Rate this question:
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- 45.
What is the SVP of Enflurane
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23
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175
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243
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248
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660
Correct Answer
A. 175Explanation
The Saturated Vapor Pressure (SVP) of enflurane is 175 mmHg at 20°C. This measurement reflects how much the anesthetic vaporizes at a given temperature, influencing how it is administered during medical procedures. Enflurane's SVP is moderate compared to other anesthetics, meaning it vaporizes at a reasonable rate, facilitating controlled delivery through anesthetic machines to maintain effective anesthesia during surgeries.Rate this question:
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- 46.
What increases SVP?
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Cooling
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Heating
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Passing gas over the liquid
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All of the above
Correct Answer
A. HeatingExplanation
Heating increases the SVP (Saturation Vapor Pressure). When a substance is heated, its molecules gain energy and move faster, causing an increase in the rate of evaporation. This leads to an increase in the number of molecules in the gas phase, resulting in a higher vapor pressure. Therefore, heating can increase the SVP of a substance.Rate this question:
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- 47.
What decreases SVP choose all that apply?
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Cooling
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Heating
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Passing gas over the liquid
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All of the above
Correct Answer(s)
A. Cooling
A. Passing gas over the liquidExplanation
Cooling decreases the saturation vapor pressure (SVP) because it lowers the temperature, reducing the energy of the water molecules and decreasing their ability to escape into the gas phase. Passing gas over the liquid also decreases SVP as it increases the concentration of gas molecules above the liquid, reducing the chances of water molecules escaping into the gas phase. However, heating increases the SVP as it raises the temperature, increasing the energy of the water molecules and promoting their transition into the gas phase. Therefore, heating does not decrease SVP.Rate this question:
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- 48.
Why does heat need to be supplied to the liquid anesthetic? choose all that apply
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To maintain a constant temperature
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To decrease SVP
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To keep a constant SVP
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To operate the bellows
Correct Answer(s)
A. To maintain a constant temperature
A. To keep a constant SVPExplanation
Heat needs to be supplied to the liquid anesthetic to maintain a constant temperature because anesthetic agents are volatile and can evaporate easily. By supplying heat, the temperature of the liquid anesthetic can be controlled, ensuring that it remains at the desired level for administration. Additionally, heat is required to keep a constant saturated vapor pressure (SVP) of the anesthetic. This is important because the SVP determines the concentration of the anesthetic vapor in the gas mixture delivered to the patient. By maintaining a constant SVP, the anesthetic concentration can be accurately controlled.Rate this question:
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- 49.
What does a wick do in a vaporizer?
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Changes FGF
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A safeguard for system pressure failure
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Increases surface area
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Play backup QB for the Philadelphia Eagles
Correct Answer
A. Increases surface areaExplanation
A wick in a vaporizer increases the surface area available for the liquid to evaporate. By increasing the surface area, more liquid can be exposed to heat, which leads to faster and more efficient vaporization. This allows the vaporizer to produce more vapor and enhance the overall vaping experience.Rate this question:
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Oct 17, 2024Quiz Edited by
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Oct 01, 2009Quiz Created by
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