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Questions and Answers
What serves as a buffer for fluctuations in venous drainage and is a source of fluid for rapid transfusion?
Where is the venous reservoir positioned?
What happens when the volume level in the reservoir increases?
What is the purpose of the long neck of the venous drainage Polycarbonate inside the reservoir?
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What is the capacity of the Closed (hybrid) reservoir?
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What is the purpose of using a separate Cardiotomy for suckers/vent in the Closed (hybrid) reservoir?
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What is the main difference between open and closed (hybrid) reservoirs?
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What is the function of a pressure relief valve in the VAVD reservoir?
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What is the purpose of using level sensor in the context of servoregulation?
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What is the risk associated with VAVD reservoir when vacuum fails?
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What is the purpose of using a filtration screen and depth in the reservoir?
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What does the term 'servoregulation' refer to?
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What is the main difference between open and closed (hybrid) reservoirs in terms of filtration?
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What happens when a filter becomes overwhelmed by air volume?
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What is the purpose of using a separate Cardiotomy for suckers/vent in the Closed (hybrid) reservoir?
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What is the purpose of using a separate Cardiotomy for suckers/vent in the Closed (hybrid) reservoir?
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Study Notes
Venous Reservoir
- The venous reservoir serves as a buffer for fluctuations in venous drainage and is a source of fluid for rapid transfusion.
- It is positioned in the cardiopulmonary bypass circuit.
- When the volume level in the reservoir increases, it allows for excess blood volume to be stored and then returned to the patient as needed.
Reservoir Design
- The long neck of the venous drainage Polycarbonate inside the reservoir allows for the separation of air and blood, preventing air from entering the bypass circuit.
- The Closed (hybrid) reservoir has a capacity of approximately 1-2 liters.
Cardiotomy and Suckers/Vent
- A separate Cardiotomy is used for suckers/vent in the Closed (hybrid) reservoir to prevent contamination and to allow for the separation of blood and air.
Open vs Closed (Hybrid) Reservoirs
- The main difference between open and closed (hybrid) reservoirs is that open reservoirs are vented to the atmosphere, while closed reservoirs are not.
- Open reservoirs require a filter to prevent contamination, while closed reservoirs do not.
Pressure Relief Valve
- The pressure relief valve in the VAVD reservoir prevents excessive pressure build-up and ensures that the reservoir does not become over-pressurized.
Level Sensor and Servoregulation
- The level sensor is used in the context of servoregulation to monitor the blood level in the reservoir and maintain a constant level.
- Servoregulation refers to the automatic control of the blood level in the reservoir.
Risks and Filtration
- If the vacuum fails in the VAVD reservoir, there is a risk of air embolism.
- The filtration screen and depth in the reservoir are used to remove air and debris from the blood.
- If a filter becomes overwhelmed by air volume, it can cause the bypass circuit to shut down.
- The main difference between open and closed (hybrid) reservoirs in terms of filtration is that open reservoirs require a filter to prevent contamination, while closed reservoirs do not.
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Description
Test your knowledge of closed circuit venous reservoirs and hybrid closed circuit systems with this quiz. Explore the differences between hybrid closed and completely closed systems, and their relevance in medical contexts such as ECMO circuits.
