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Perfusion Essentials
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Perfusion Essentials

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Questions and Answers

Which material is commonly used as a plasticizer in PVC?

  • Silicone rubber
  • Phthalates (correct)
  • Fatty acid esters
  • Carbon and hydrogen atoms

    • Which organization has determined that nearly all plasticizers are safe?

  • FDA
  • REACH
  • Neither REACH nor FDA
  • Both REACH and FDA (correct)

    • Which material produces less hemolysis than PVC when the tubing is occluded?

  • Phthalates
  • Fatty acid esters
  • Carbon and hydrogen atoms
  • Silicone rubber (correct)

    • Which type of coating is used to reduce the inflammatory response to foreign material in tubing?

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

    Which type of tubing can be used on heparin-sensitive or intolerant patients?

    <p>Terumo X-coating</p> Signup and view all the answers

    What is the main factor to consider when selecting the appropriate tubing size?

    <p>Internal diameter</p> Signup and view all the answers

    Which material is commonly used for connectors in medical tubing?

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

    What is the main purpose of tie-banding on tubing connections?

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

    Which sterilization method is best suited for polymer resin-based products and single-use medical devices?

    <p>Ethylene Oxide sterilization</p> Signup and view all the answers

    What are the four essential parameters for Ethylene Oxide sterilization?

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

    What is the main concern regarding the toxicity of Ethylene Oxide?

    <p>It is a germ cell mutagen</p> Signup and view all the answers

    What is the main function of roller pumps in medical circuits?

    <p>To induce blood flow by compressing the tubing</p> Signup and view all the answers

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

    <p>Polyvinylchloride (PVC)</p> Signup and view all the answers

    What are the carbon-chloride (C-Cl) bonds in PVC responsible for?

    <p>Making PVC a fairly strong material</p> Signup and view all the answers

    What is a plasticizer?

    <p>A low-volatility liquid or solid substance added to a polymer to improve flexibility</p> Signup and view all the answers

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

    <p>Over 30,000</p> Signup and view all the answers

    What are phthalates used for in plastics?

    <p>Improving flexibility</p> Signup and view all the answers

    What are fatty acid esters added to?

    <p>Rubber and vinyl</p> Signup and view all the answers

    Which type of pump was developed by Denis Papin in the 17th century?

    <p>Centrifugal pump</p> Signup and view all the answers

    What is the purpose of servo-regulation in centrifugal pumps?

    <p>To reduce the risk of flow-induced blood damage</p> Signup and view all the answers

    What happens when the console is turned on and the rpms are increased in a centrifugal pump?

    <p>Positive pressure is created to propel fluid forward</p> Signup and view all the answers

    What is the characteristic of blood flow in a rotary piston pump?

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

    What is the purpose of servoregulation in pumps?

    <p>To control the speed and position of a motor based on feedback</p> Signup and view all the answers

    Which one of the following is a type of positive displacement pump?

    <p>Vane pump</p> Signup and view all the answers

    Which material accounts for approximately 30 percent of the medical tubing market?

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

    What is the main difference between extrusion and pultrusion?

    <p>Extrusion pulls resin through the die, while pultrusion moves resin towards the die</p> Signup and view all the answers

    What is the rating that defines the minimum or maximum pressures the tube is designed to withstand?

    <p>Pressure rating</p> Signup and view all the answers

    Which material offers excellent cleanliness properties but has worse form recovery (compression set) after being under load?

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

    Which tubing feature is important for tubes used to handle fluid delivery in order to track fluid movement and account for possible air bubbles in the system?

    <p>Opacity</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>A and C</p> Signup and view all the answers

    Which material is commonly used as a plasticizer in PVC?

    <p>Fatty acid esters</p> Signup and view all the answers

    What is the main factor to consider when selecting the appropriate tubing size?

    <p>Internal diameter</p> Signup and view all the answers

    What are phthalates used for in plastics?

    <p>Improving flexibility</p> Signup and view all the answers

    Which type of pump was developed by Denis Papin in the 17th century?

    <p>Positive displacement pump</p> Signup and view all the answers

    What is the main purpose of tie-banding on tubing connections?

    <p>Preventing leaks</p> Signup and view all the answers

    Which sterilization method is best suited for polymer resin-based products and single-use medical devices?

    <p>Ethylene Oxide sterilization</p> Signup and view all the answers

    Which material is commonly used as a plasticizer in PVC?

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

    What is the purpose of servo-regulation in centrifugal pumps?

    <p>To maintain a constant flow rate</p> Signup and view all the answers

    What happens when the console is turned on and the rpms are increased in a centrifugal pump?

    <p>The pump flow rate increases</p> Signup and view all the answers

    What are the four essential parameters for Ethylene Oxide sterilization?

    <p>Temperature, pressure, concentration, time</p> Signup and view all the answers

    What are fatty acid esters added to?

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

    Which one of the following is a type of positive displacement pump?

    <p>Roller pump</p> Signup and view all the answers

    Which organization has determined that nearly all plasticizers are safe?

    <p>The FDA</p> Signup and view all the answers

    What is the main purpose of tie-banding on tubing connections?

    <p>To secure the tubing connections</p> Signup and view all the answers

    What is the main factor to consider when selecting the appropriate tubing size?

    <p>The internal diameter of the tubing</p> Signup and view all the answers

    What is the characteristic of blood flow in a rotary piston pump?

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

    Which material produces less hemolysis than PVC when the tubing is occluded?

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

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

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

    Which material is commonly used for connectors in medical tubing?

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

    What is the main concern regarding the toxicity of Ethylene Oxide?

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

    What are the four essential parameters for Ethylene Oxide sterilization?

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

    What is the main function of roller pumps in medical circuits?

    <p>To induce flow of blood by compressing the tubing</p> Signup and view all the answers

    What is the main purpose of tie-banding on tubing connections?

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

    Which sterilization method is best suited for polymer resin-based products and single-use medical devices?

    <p>Ethylene Oxide Sterilization</p> Signup and view all the answers

    Which type of pump was developed in the 17th century by Denis Papin?

    <p>Archimedes screw</p> Signup and view all the answers

    What is the main function of roller pumps in medical circuits?

    <p>To create positive pressure and propel fluid forward</p> Signup and view all the answers

    What is the purpose of servo-regulation in centrifugal pumps?

    <p>To provide automatic reduction of centrifugal head speed</p> Signup and view all the answers

    Which one of the following is a type of positive displacement pump?

    <p>Peristaltic pump</p> Signup and view all the answers

    What happens when the console is turned on and the rpms are increased in a centrifugal pump?

    <p>Positive pressure that propels fluid forward</p> Signup and view all the answers

    Which material accounts for approximately 30 percent of the medical tubing market?

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

    Which material is commonly used as a plasticizer in PVC?

    <p>Fatty acid esters</p> Signup and view all the answers

    What is the main purpose of tie-banding on tubing connections?

    <p>To secure tubing connections</p> Signup and view all the answers

    What is the main factor to consider when selecting the appropriate tubing size?

    <p>Flow rate requirements</p> Signup and view all the answers

    What are phthalates used for in plastics?

    <p>Improving flexibility</p> Signup and view all the answers

    What is the main function of roller pumps in medical circuits?

    <p>To provide pulsatile flow</p> Signup and view all the answers

    What is a plasticizer?

    <p>A low-volatility liquid or solid substance added to a polymer to improve flexibility</p> Signup and view all the answers

    Which material is commonly used as a plasticizer in PVC?

    <p>Polymer resin</p> Signup and view all the answers

    What is the main difference between extrusion and pultrusion?

    <p>Extrusion pulls resin through the die while pultrusion moves resin towards the die</p> Signup and view all the answers

    What is the main purpose of tie-banding on tubing connections?

    <p>To prevent leakage</p> Signup and view all the answers

    What is the main factor to consider when selecting the appropriate tubing size?

    <p>Minimum bend radius</p> Signup and view all the answers

    What is the characteristic of blood flow in a rotary piston pump?

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

    What is the rating that defines the minimum or maximum pressures the tube is designed to withstand?

    <p>Pressure rating</p> Signup and view all the answers

    Which organization has determined that nearly all plasticizers are safe?

    <p>The Registration for Evaluation, Authorisation, and Restriction of Chemicals (REACH)</p> Signup and view all the answers

    What is the main purpose of tie-banding on tubing connections?

    <p>To ensure a secure and leak-proof connection</p> Signup and view all the answers

    Which material produces less hemolysis than PVC when the tubing is occluded?

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

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

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

    What is the main factor to consider when selecting the appropriate tubing size?

    <p>The application</p> Signup and view all the answers

    Which material is commonly used for connectors in medical tubing?

    <p>Polyvinyl chloride (PVC)</p> Signup and view all the answers

    Which material is commonly used for connectors in medical tubing?

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

    What is the main function of roller pumps in medical circuits?

    <p>To compress the tubing and induce blood flow</p> Signup and view all the answers

    What is the purpose of servo-regulation in centrifugal pumps?

    <p>To prevent cavitation in the pump</p> Signup and view all the answers

    Which sterilization method is best suited for polymer resin-based products and single-use medical devices?

    <p>Ethylene oxide sterilization</p> Signup and view all the answers

    What are the four essential parameters for Ethylene Oxide sterilization?

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

    What is the main factor to consider when selecting the appropriate tubing size?

    <p>Minimum bend radius</p> Signup and view all the answers

    Which type of pump was developed by Denis Papin in the 17th century?

    <p>Archimedes screw</p> Signup and view all the answers

    What is the main purpose of servo-regulation in centrifugal pumps?

    <p>To provide automatic reduction of centrifugal head speed</p> Signup and view all the answers

    What is the characteristic of blood flow in a rotary piston pump?

    <p>Pulsatile flow</p> Signup and view all the answers

    What happens when the console is turned on and the rpms are increased in a centrifugal pump?

    <p>Positive pressure is created</p> Signup and view all the answers

    What is the main function of roller pumps in medical circuits?

    <p>To create positive pressure</p> Signup and view all the answers

    Which type of positive displacement pump is a circular pipe enclosing a helix and inclined at an angle of about 45 degrees to the horizontal with its lower end dipped in the water?

    <p>Archimedes screw</p> Signup and view all the answers

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