Starr-Edwards 1260 Ball-Cage Valve
12 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the preferred orientation of monoleaflet valves in the aortic position?

  • Major orifice toward the left ventricular free wall
  • Major orifice pointing upward
  • Major orifice toward the septum
  • Major orifice toward the right posterior aortic wall (correct)
  • What type of flow pattern is characterized by bileaflet mechanical valves?

  • Two separate jets laterally
  • Single antegrade jet
  • Circular flow pattern
  • Three separate jets due to a smaller central orifice (correct)
  • What is the range of the opening angle of the leaflets of bileaflet valves relative to the annulus plane?

  • 75 to 90 degrees (correct)
  • 90 to 105 degrees
  • 105 to 120 degrees
  • 60 to 75 degrees
  • Which type of valve shows a small amount of normal regurgitation with an approximate volume of 5-9 mL per beat?

    <p>Monoleaflet valves</p> Signup and view all the answers

    What is suggested as an optimal orientation for bileaflet valves in the mitral position?

    <p>Perpendicular to the normal plane of mitral valve opening</p> Signup and view all the answers

    Which type of bileaflet valve does not show a clear advantage in specific leaflet orientation when implanted in the aortic position?

    <p>St.Jude Medical valves</p> Signup and view all the answers

    What is the main mechanism responsible for the thrombogenicity of the Starr-Edwards 1260 valve?

    <p>Large wake generated in the central part</p> Signup and view all the answers

    Which component of the Starr-Edwards 1260 valve is primarily visualized on colorflow Doppler imaging?

    <p>Closing volume</p> Signup and view all the answers

    What is the purpose of lateral or central metal struts in monoleaflet or tilting-disk valves?

    <p>To secure the disk within the rigid annulus</p> Signup and view all the answers

    What results from the opening angle of the disk relative to the valve annulus being between 60 to 80 degrees in monoleaflet or tilting-disk valves?

    <p>Generation of a semicircular jet through the minor orifice</p> Signup and view all the answers

    What distinguishes the flow through the major orifice from that through the minor orifice in monoleaflet or tilting-disk valves?

    <p>Higher velocity in flow through the minor orifice</p> Signup and view all the answers

    Why is the Starr-Edwards 1260 valve no longer implanted despite its relatively good durability?

    <p>Further development of other valve types</p> Signup and view all the answers

    More Like This

    The Hate U Give
    5 questions
    The Hate U Give Chapters 22-26 Quiz
    6 questions
    Stars Flocabulary Quiz
    10 questions

    Stars Flocabulary Quiz

    WinningDandelion avatar
    WinningDandelion
    The Hate U Give Chapter Insights
    40 questions

    The Hate U Give Chapter Insights

    EnhancedConstellation8775 avatar
    EnhancedConstellation8775
    Use Quizgecko on...
    Browser
    Browser