Tubing Selection for Arterial and Venous Perfusion

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which material is commonly used to make shower curtains and flexible tubes?

Polyvinyl chloride (PVC) (correct)

Phthalates

Silicone rubber

Fatty acid esters

What is the molecular structure of silicone rubber?

A chain of phthalates and fatty acid esters

A chain of carbon and hydrogen atoms

A chain of silicone and oxygen atoms (correct)

A chain of PVC and plasticizers

Which type of tubing produces less hemolysis than PVC when occluded?

Polyvinyl chloride (PVC)

Phthalates

Silicone rubber (correct)

Fatty acid esters

Which type of coating can reduce the inflammatory response to foreign material in tubing?

Biocompatible coating Signup and view all the answers

Which type of tubing is made from a non-heparin-based biopassive polymer?

Poly(2methoxyethylacrylate) (PMEA) tubing Signup and view all the answers

Which factor should be considered when selecting the appropriate tubing size?

Application Signup and view all the answers

What is the main advantage of using larger bore tubing?

Requires less pump head revolutions Signup and view all the answers

Which material is the predominant tubing material used in cardiopulmonary bypass?

Polyvinylchloride (PVC) Signup and view all the answers

What is the purpose of adding plasticizers to PVC tubing?

To improve flexibility Signup and view all the answers

How many substances have been tested for use as a polymer plasticizer?

Over 1000 Signup and view all the answers

Which family of polymer plasticizers is used for flexibility in plastics?

Phthalates Signup and view all the answers

What type of bonds does PVC have?

Carbon-chloride (C-Cl) bonds Signup and view all the answers

What is the purpose of surface modifications in tubing used in the extracorporeal circuit?

To reduce friction Signup and view all the answers

Which of the following is NOT mentioned as an option for tubing material used in cardiopulmonary bypass?

Nylon Signup and view all the answers

Which material is commonly used for medical tubing?

PVC Signup and view all the answers

What is the main purpose of clear tubing used in fluid delivery?

To track fluid movement Signup and view all the answers

Which method is used for the manufacture of plastic tubing that involves pulling reinforced fibers through a die?

Pultrusion Signup and view all the answers

What is the pressure rating of medical tubing?

Maximum pressure the tube can withstand Signup and view all the answers

What is the maximum vacuum rating of medical tubing?

Maximum vacuum pressure the tube can handle Signup and view all the answers

What feature is important for medical tubing used in the extracorporeal circuit?

Coilability Signup and view all the answers

Which material has worse form recovery (compression set) after being under load?

TPE Signup and view all the answers

Which of the following is true about minimum bend radius?

All of the above. Signup and view all the answers

What can happen if a tube is flexed too far?

Both A and B Signup and view all the answers

What material are polycarbonate connectors made of?

Polycarbonate Signup and view all the answers

What is the process of heating the tubing and placing it on the specified connection site called?

Bonding Signup and view all the answers

What is the most common method of sterilizing tubing?

Ethylene Oxide Sterilization Signup and view all the answers

What are the four essential parameters for Ethylene Oxide Sterilization?

Gas concentration, temperature, relative humidity, and exposure time Signup and view all the answers

What is the basic cycle of Ethylene Oxide Sterilization?

Preconditioning, gas introduction, exposure, evacuation, air washes Signup and view all the answers

What is the purpose of mechanical aeration in Ethylene Oxide Sterilization?

To allow desorption of the toxic ETO residual Signup and view all the answers

What is Ethylene Oxide Sterilization best suited for?

All of the above Signup and view all the answers

Study Notes

Materials Used in Medical Tubing

Silicone is commonly used to make shower curtains and flexible tubes.
Silicone rubber has a molecular structure of Si-O-Si (silicon-oxygen-silicon).

Hemolysis and Tubing

Tubing made from silicone produces less hemolysis than PVC when occluded.
Coating with a non-thrombogenic material can reduce the inflammatory response to foreign material in tubing.

Types of Tubing

Tubing made from a non-heparin-based biopassive polymer is an example of a biopassive tubing.
Larger bore tubing is advantageous as it reduces pressure drop and increases flow rate.

Selection of Tubing Size

Inner diameter and flow rate are important factors to consider when selecting the appropriate tubing size.

Material Properties

PVC tubing requires the addition of plasticizers to make it flexible.
Over 30,000 substances have been tested for use as a polymer plasticizer.
Phthalates are a family of polymer plasticizers used for flexibility in plastics.
PVC has polar bonds.

Surface Modifications

Surface modifications in tubing used in the extracorporeal circuit are done to reduce thrombogenicity.

Manufacturing and Sterilization

Pultrusion is a method used for the manufacture of plastic tubing that involves pulling reinforced fibers through a die.
Medical tubing has a pressure rating of up to 1000 psi and a maximum vacuum rating of up to 29 inHg.
Sterilization is essential for medical tubing, and the most common method is Ethylene Oxide Sterilization.
The four essential parameters for Ethylene Oxide Sterilization are temperature, humidity, gas concentration, and time.
The basic cycle of Ethylene Oxide Sterilization includes preconditioning, sterilization, and aeration.
Mechanical aeration is used to remove ethylene oxide residues from the tubing.
Ethylene Oxide Sterilization is best suited for heat-sensitive materials.

Other Facts

Polycarbonate connectors are made of polycarbonate material.
The process of heating the tubing and placing it on the specified connection site is called heat forming.
Silicone tubing has worse form recovery (compression set) after being under load.
Minimum bend radius is important for medical tubing used in the extracorporeal circuit to prevent kinking.
Flexing a tube too far can cause kinking or cracking.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz tests your knowledge on selecting appropriate tubing sizes for arterial and venous perfusion, as well as cardioplegia administration and blood scavenging. Understand how factors like body surface area and cardiac index can guide tubing selection.