Cardiopulmonary Bypass Pumps
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Questions and Answers

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

  • Rotary piston pump
  • Positive displacement pump
  • Centrifugal pump (correct)
  • Roller pump
  • What safety feature was introduced in the 1950s for roller pumps?

  • Pressure-based servo-regulation (correct)
  • In-line auto-clamp
  • Automatic reduction of pump speed
  • Level sensor for reservoir volume
  • Which type of pump performs independent of afterload?

  • Roller pump (correct)
  • Positive displacement pump
  • Centrifugal pump
  • Rotary piston pump
  • What can happen if there is sudden occlusion of the inlet of the roller head?

    <p>Tubing may cavitate and create air bubbles in the circuit (B)</p> Signup and view all the answers

    Which pump type utilizes a magnet and impeller combination to propel blood through the circuit?

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

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

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

    What is the risk associated with rotary piston pumps?

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

    What does servoregulation control in pumps?

    <p>Speed and position of a motor (A)</p> Signup and view all the answers

    What happens when servoregulation occurs in roller pumps?

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

    What is the purpose of the Archimedes screw in pumping water?

    <p>Removing water from the hold of a large ship (A)</p> Signup and view all the answers

    Which type of pump was initially used in HLM technology in the 1950s?

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

    Who patented the first roller pump in 1855?

    <p>Porter and Bradley (C)</p> Signup and view all the answers

    Which pump design was intended for direct blood transfusion?

    <p>Surgical pump (B)</p> Signup and view all the answers

    Who developed the first double roller pump in 1899?

    <p>Charles Truax (A)</p> Signup and view all the answers

    What is the main function of peristaltic pumps in perfusion?

    <p>To move fluid (B)</p> Signup and view all the answers

    Which type of pump is used in cross-circulation according to the text?

    <p>Sigma motor pump (A)</p> Signup and view all the answers

    What type of pump is utilized in the Gibbon-IBM cardiopulmonary bypass machine?

    <p>Debakey-Schmidt pump (B)</p> Signup and view all the answers

    Which pump design is shown in the first published illustration of a roller pump for the transportation of blood?

    <p>Surgical pump (C)</p> Signup and view all the answers

    Which pump design is shown in the illustration from Charles Truax's prospectus?

    <p>Surgical pump (C)</p> Signup and view all the answers

    What was the initial purpose of developing equipment for circulatory and respiratory needs?

    <p>Oxygenation and de-airing (D)</p> Signup and view all the answers

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