CV 3 arrthymias

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1. heart block, which represents a bradyarrthythmia (where heart rate slows or may even cease). involves Partial or complete failure of conduction by AVN of impulses from SAN to ventricles. which of these statements is WRONG

  • 2nd degree
    abnormally slow impulse conduction
  • 3rd degree
    complete heart block (no conduction)
  • 2nd degree
    fraction of impulses conducted
  • 1st degree
    abnormally slow impulse conduction
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Other questions in this quiz

2. 3 things a re-entry circuit requires? select INCORRECT answer

  • Central inexcitable region
  • Zone of unidirectional block
  • terminal inexcitable region
  • Zone of slowed conduction

3. Arrhythmias are Abnormalities in heart rate/rhythm driven by SAN caused by disorders of: select incorrect answer

  • cardiac arrest via systolic vessels
  • Classified according to
    Effect on heart rate
    Site of origin
  • Impulse generation
    Abnormal automaticity
    Triggered automaticity
  • Impulse conduction
    Re-entry circuits
    Heart block

4. how is a re-entry circuit developed

  • the re-excitation of an area of myocardium by a delayed impulse
  • the re-excitation of an area of myocardium by a prompt impulse
  • the re-uptake of an area of myocardium by a delayed impulse
  • the re-uptake of an area of myocardium by a prompt impulse

5. what is triggered automaticity associated with the extra of WHAT events arising during non-nodal cardiac action potential (afterdepolarisations), either at the end of phase 2/commencement of phase 3 (early afterdepolarisations (EADs)) or in phase 4 (delay

  • depolarisation
  • sodium ion gain
  • hyperpolarisation
  • sodium ion loss

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