Cardiopulmonary Bypass Tubing Quiz
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Questions and Answers

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

  • Silicone rubber
  • Phosphates
  • Polyvinylchloride (PVC) (correct)
  • Latex rubber

    • What are the bonds that make up PVC?

  • Polar carbon-nitrogen (C-N) bonds
  • Polar carbon-chloride (C-Cl) bonds (correct)
  • Polar carbon-hydrogen (C-H) bonds
  • Polar carbon-oxygen (C-O) bonds

    • What is the purpose of plasticizers in PVC tubing?

  • To make it brittle
  • To make it flame retardant
  • To make it rigid
  • To make it malleable and easier to manipulate (correct)

    • Which type of plasticizer is commonly used for flexibility in plastics?

    <p>Phthalates</p> Signup and view all the answers

    What is the purpose of dicarbonates in shaping PVC?

    <p>To shape PVC at lower temperatures</p> Signup and view all the answers

    What is the purpose of phosphates in plasticizers?

    <p>To make it flame retardant</p> Signup and view all the answers

    What is the purpose of fatty acid esters in plasticizers?

    <p>To improve flexibility</p> Signup and view all the answers

    How many tons of plasticizers are used each year?

    <p>8 million tons</p> Signup and view all the answers

    What would happen to PVC without plasticizers?

    <p>It would remain in its hard, rigid form</p> Signup and view all the answers

    What are some examples of products made from PVC?

    <p>All of the above</p> Signup and view all the answers

    Which material offers excellent cleanliness properties but has lower temperature resistance, chemical resistance, and worse form recovery after being under load?

    <p>TPE &amp; TPU</p> Signup and view all the answers

    Which material is not rigid enough for some industrial applications and absorbs surrounding moisture?

    <p>TPE &amp; TPU</p> Signup and view all the answers

    Which material is highly flexible and has a low shrink temperature and excellent abrasion resistance?

    <p>Polyolefin</p> Signup and view all the answers

    Which method for the manufacture of plastic tubing is a continuous feed process used to produce a tubing profile?

    <p>Pultrusion</p> Signup and view all the answers

    What does the pressure rating of medical tubing define?

    <p>The minimum or maximum pressures the tube is designed to withstand</p> Signup and view all the answers

    What does the minimum bend radius of medical tubing indicate?

    <p>The acceptable amount of deformation the tubing cross-section can undergo</p> Signup and view all the answers

    Which connector material is most widely used in medical tubing?

    <p>Polycarbonate</p> Signup and view all the answers

    What is the term used to refer to connectors in medical tubing?

    <p>Fitting</p> Signup and view all the answers

    How are connections in medical tubing that are 'bonded' typically made?

    <p>By heating the tubing and placing it on the specified connection site</p> Signup and view all the answers

    Which method of sterilization uses ethylene oxide gas?

    <p>ETO Sterilization</p> Signup and view all the answers

    Which organization has determined that nearly all plasticizers are safe?

    <p>The Registration for Evaluation, Authorization, and Restriction of Chemicals</p> Signup and view all the answers

    What is the molecular structure of silicone rubber?

    <p>Silicone and oxygen atoms</p> Signup and view all the answers

    Which type of tubing is sometimes used in the arterial pump roller head as an alternative to PVC tubing?

    <p>Silicone rubber tubing</p> Signup and view all the answers

    What is the term for the release of plastic micro particles from tubing due to repeated compression?

    <p>Spallation</p> Signup and view all the answers

    What are some sequelae of the inflammatory response to foreign surfaces during CPB?

    <p>All of the above</p> Signup and view all the answers

    Which type of circuit coating uses both hydrophobic and hydrophilic properties to reduce protein denaturation and platelet adhesion?

    <p>Poly(2-methoxyethylacrylate) (PMEA) coating</p> Signup and view all the answers

    What is the most commonly used wall thickness in perfusion?

    <p>1/16''</p> Signup and view all the answers

    What are the advantages of using larger bore tubing in perfusion?

    <p>All of the above</p> Signup and view all the answers

    What factors should be considered when deciding upon the size of arterial and venous tubing?

    <p>Both A and B</p> Signup and view all the answers

    What does the term 'Medical Tubing' typically refer to?

    <p>Tubing that meets certain standards or certifications</p> Signup and view all the answers

    Which type of plasticizer is commonly used for flexibility in plastics?

    <p>Phthalates</p> Signup and view all the answers

    What is the purpose of phosphates in plasticizers?

    <p>To make the material flame retardant</p> Signup and view all the answers

    What is the purpose of fatty acid esters in plasticizers?

    <p>To improve flexibility</p> Signup and view all the answers

    What are some examples of products made from PVC?

    <p>All of the above</p> Signup and view all the answers

    What would happen to PVC without plasticizers?

    <p>It would become brittle</p> Signup and view all the answers

    What is the purpose of dicarbonates in shaping PVC?

    <p>To shape PVC at lower temperatures</p> Signup and view all the answers

    What are the bonds that make up PVC?

    <p>Carbon-chloride (C-Cl) bonds</p> Signup and view all the answers

    How many tons of plasticizers are used each year?

    <p>Over 8 million tons</p> Signup and view all the answers

    What is the purpose of plasticizers in PVC tubing?

    <p>To improve flexibility</p> Signup and view all the answers

    What does the minimum bend radius of medical tubing indicate?

    <p>The minimum diameter the tubing can bend without kinking</p> Signup and view all the answers

    Which organization is known to be the most comprehensive and strict safety regulating organization in the world?

    <p>REACH</p> Signup and view all the answers

    Which type of rubber has a molecular structure consisting of a chain of silicone and oxygen atoms rather than carbon and hydrogen atoms?

    <p>Silicone rubber</p> Signup and view all the answers

    Which type of tubing produces less hemolysis than PVC when occluded, but can release more particles?

    <p>Silicone tubing</p> Signup and view all the answers

    Which type of tubing is sometimes used in the arterial pump roller head as an alternative to commonly used PVC tubing?

    <p>Silicone tubing</p> Signup and view all the answers

    What is the term used to describe the release of plastic micro particles from tubing due to repeated compression?

    <p>Spallation</p> Signup and view all the answers

    What are some sequelae of the inflammatory response to foreign surfaces during CPB?

    <p>All of the above</p> Signup and view all the answers

    Which type of circuit coating uses a non-heparin-based biopassive polymer to reduce protein denaturation and platelet adhesion?

    <p>PMEA coating</p> Signup and view all the answers

    Which type of tubing is made from phosphorylcholine to reduce platelet activation and cell adhesion to the tubing surface?

    <p>Phosphorylcholine tubing</p> Signup and view all the answers

    What is the most commonly used wall thickness in perfusion?

    <p>1/16''</p> Signup and view all the answers

    What does the internal diameter of tubing affect?

    <p>All of the above</p> Signup and view all the answers

    Which material is commonly used for the manufacture of venous hardshell reservoirs?

    <p>PVC</p> Signup and view all the answers

    What is the main disadvantage of using Thermoplastic Polyurethane (TPU) for some industrial applications?

    <p>Rigidity</p> Signup and view all the answers

    Which material is highly flexible and has a low shrink temperature and excellent abrasion resistance?

    <p>Polyolefin</p> Signup and view all the answers

    What is the purpose of tie-banding in tubing connections?

    <p>To increase strength and security</p> Signup and view all the answers

    What are the four essential parameters that influence the effectiveness of Ethylene Oxide (ETO) sterilization?

    <p>Gas concentration, temperature, relative humidity, and exposure time</p> Signup and view all the answers

    Which stage of the Ethylene Oxide (ETO) sterilization cycle involves the introduction of the gas?

    <p>Gas introduction</p> Signup and view all the answers

    What is the classification of ethylene oxide in terms of its effects on germ cells, carcinogenicity, and reproductive toxicity?

    <p>Germ cell mutagen, carcinogen, reproductive toxin</p> Signup and view all the answers

    What is the purpose of polycarbonate connectors in medical tubing?

    <p>To increase strength and security</p> Signup and view all the answers

    Which method for the manufacture of plastic tubing is a continuous feed process used to produce a tubing profile?

    <p>Pultrusion</p> Signup and view all the answers

    What does the minimum bend radius of medical tubing indicate?

    <p>The acceptable amount of deformation the tubing cross-section can undergo</p> Signup and view all the answers

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