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Questions and Answers
Which type of oxygenator is more prone to thrombosis and microemboli?
Which type of oxygenator is more prone to thrombosis and microemboli?
- Direct membrane oxygenators
- Countercurrent oxygenators
- Direct contact oxygenators (correct)
- Concurrent oxygenators
Which type of flow allows for increased transfer of X across the barrier throughout the entire length of the system?
Which type of flow allows for increased transfer of X across the barrier throughout the entire length of the system?
- Countercurrent flow (correct)
- Parallel flow
- Reverse flow
- Concurrent flow
What is the purpose of the sweep gas in an oxygenator?
What is the purpose of the sweep gas in an oxygenator?
- To maximize gas exchange
- To increase the resistance
- To remove CO2 from the blood (correct)
- To decrease the gradient across the membrane
What is the concentration of X at equilibrium in a concurrent flow system?
What is the concentration of X at equilibrium in a concurrent flow system?
What is the relationship between bubble diameter and available surface area for gas exchange in the blood?
What is the relationship between bubble diameter and available surface area for gas exchange in the blood?
What is the equivalent physiological function of the sweep gas in an oxygenator?
What is the equivalent physiological function of the sweep gas in an oxygenator?
What are the advantages of using a membrane oxygenator over bubble oxygenators?
What are the advantages of using a membrane oxygenator over bubble oxygenators?
What is the purpose of monitoring the function of the oxygenator during a surgical procedure?
What is the purpose of monitoring the function of the oxygenator during a surgical procedure?
Which material is commonly used to make microporous hollow fiber oxygenators?
Which material is commonly used to make microporous hollow fiber oxygenators?
What is the purpose of increasing the length of the blood path in microporous membrane oxygenators?
What is the purpose of increasing the length of the blood path in microporous membrane oxygenators?
What is the main difference between the movement of oxygen and carbon dioxide across the oxygenator?
What is the main difference between the movement of oxygen and carbon dioxide across the oxygenator?
What is the purpose of the predetermined 'rated flow' in modern oxygenators?
What is the purpose of the predetermined 'rated flow' in modern oxygenators?
According to Fick's First Law of Diffusion, the movement of O2 and CO2 across a barrier will be in the direction of higher to lower concentration (partial pressure) with a magnitude that is proportional to the gradient, and proportional to the area involved, and inversely proportional to the diffusion coefficient or 'diffusivity.'
According to Fick's First Law of Diffusion, the movement of O2 and CO2 across a barrier will be in the direction of higher to lower concentration (partial pressure) with a magnitude that is proportional to the gradient, and proportional to the area involved, and inversely proportional to the diffusion coefficient or 'diffusivity.'
According to the text, what factors contribute to efficient gas diffusion in an oxygenator?
According to the text, what factors contribute to efficient gas diffusion in an oxygenator?
If the concentration of CO2 is higher in the blood stream than in the ambient air, what will the sweep gas flow across the oxygenator do?
If the concentration of CO2 is higher in the blood stream than in the ambient air, what will the sweep gas flow across the oxygenator do?
Which equation represents Fick's First Law of Diffusion?
Which equation represents Fick's First Law of Diffusion?
What is the relationship between the diffusion coefficient and the diffusivity?
What is the relationship between the diffusion coefficient and the diffusivity?
What factors contribute to efficient gas diffusion in an oxygenator?
What factors contribute to efficient gas diffusion in an oxygenator?
What is the purpose of the sweep gas in an oxygenator?
What is the purpose of the sweep gas in an oxygenator?
What is the equivalent physiological function of the sweep gas in an oxygenator?
What is the equivalent physiological function of the sweep gas in an oxygenator?
What is the purpose of increasing the gradient across the membrane in an oxygenator?
What is the purpose of increasing the gradient across the membrane in an oxygenator?
What is the purpose of monitoring the function of the oxygenator during a surgical procedure?
What is the purpose of monitoring the function of the oxygenator during a surgical procedure?
What is the purpose of microporous membrane oxygenators in the operating room?
What is the purpose of microporous membrane oxygenators in the operating room?
What is the main advantage of using microporous hollow fiber oxygenators over silicone membrane oxygenators?
What is the main advantage of using microporous hollow fiber oxygenators over silicone membrane oxygenators?
What happens to the pores in the fibers of microporous membrane oxygenators when exposed to blood?
What happens to the pores in the fibers of microporous membrane oxygenators when exposed to blood?
What is the purpose of increasing the length of the blood path in microporous membrane oxygenators?
What is the purpose of increasing the length of the blood path in microporous membrane oxygenators?
What is the purpose of countercurrent flow in a system with two parallel tubes filled with fluid or gas separated by a permeable membrane?
What is the purpose of countercurrent flow in a system with two parallel tubes filled with fluid or gas separated by a permeable membrane?
What is the purpose of the priming volume in an oxygenator?
What is the purpose of the priming volume in an oxygenator?
What is the definition of the oxygen reference blood flow in an oxygenator?
What is the definition of the oxygen reference blood flow in an oxygenator?
What is the advantage of using a membrane oxygenator over bubble oxygenators?
What is the advantage of using a membrane oxygenator over bubble oxygenators?
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