Closed Circuit Venous Reservoirs Quiz

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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?

Cardiotomy reservoir

Internal filtering system

Polycarbonate neck

Venous reservoir (correct)

Where is the venous reservoir positioned?

Pre-pump, post-oxygenator

Pre-pump, and pre-oxygenator (correct)

Post-oxygenator

Post-pump, pre-oxygenator

What happens when the volume level in the reservoir increases?

The vortex disappears

The vortex moves to the top of the reservoir

The vortex sits higher at the bottom of the reservoir

The vortex sits lower at the bottom of the reservoir (correct)

What is the purpose of the long neck of the venous drainage Polycarbonate inside the reservoir?

Depth and screen filtration Signup and view all the answers

What is the capacity of the Closed (hybrid) reservoir?

2500 mL Signup and view all the answers

What is the purpose of using a separate Cardiotomy for suckers/vent in the Closed (hybrid) reservoir?

To enhance safety Signup and view all the answers

What is the main difference between open and closed (hybrid) reservoirs?

Filtration screen and depth Signup and view all the answers

What is the function of a pressure relief valve in the VAVD reservoir?

To reduce internal pressure Signup and view all the answers

What is the purpose of using level sensor in the context of servoregulation?

To trigger alarm in case of low level Signup and view all the answers

What is the risk associated with VAVD reservoir when vacuum fails?

Higher risk of air embolus Signup and view all the answers

What is the purpose of using a filtration screen and depth in the reservoir?

To filter blood Signup and view all the answers

What does the term 'servoregulation' refer to?

Controlling speed and position of a motor Signup and view all the answers

What is the main difference between open and closed (hybrid) reservoirs in terms of filtration?

Filtration screen and depth Signup and view all the answers

What happens when a filter becomes overwhelmed by air volume?

Air embolus can occur Signup and view all the answers

What is the purpose of using a separate Cardiotomy for suckers/vent in the Closed (hybrid) reservoir?

To enhance safety Signup and view all the answers

What is the purpose of using a separate Cardiotomy for suckers/vent in the Closed (hybrid) reservoir?

To enhance safety Signup and view all the answers

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.