Myocardial Infarction Causes
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Questions and Answers

What is the cause of a myocardial infarction?

  • a.Decreased perfusion to the pulmonary artery
  • b. Partial or complete obstruction of a coronary artery (correct)
  • c. Blockage in one or more of the great vessels
  • d. Narrowing of part of the aorta

    • How does the lung respond to regional lung hypoxia?

  • Bronchial artery vasoconstriction
  • Bronchial artery vasodilation
  • Pulmonary artery vasoconstriction (correct)
  • Pulmonary artery vasodilation

    • By which of the following routes does blood flow through the umbilical cord between the placenta and the fetus?

  • One umbilical vein and one umbilical artery
  • One umbilical vein and two umbilical arteries (correct)
  • Two umbilical veins and one umbilical artery
  • Two umbilical veins and two umbilical arteries

    • What would be a normal P50 for a fetus?

    <p>20</p> Signup and view all the answers

    In the fetal heart, the foramen ovale allows blood to flow between which two structures?

    <p>Right atrium to left atrium.</p> Signup and view all the answers

    Which factors contribute to maintaining a patent ductus arteriosus during fetal life?

    <p>Low PaO2 &amp; Presence of prostaglandins</p> Signup and view all the answers

    Infants can generate auto-PEEP by which of the following methods?

    <p>Laryngeal braking</p> Signup and view all the answers

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