Summary: Cardiac Pacing, Defibrillation And Resynchronization : A Clinical Approach | 9781405167482 | David L Hayes, et al

Read the summary and the most important questions on Cardiac pacing, defibrillation and resynchronization : a clinical approach | 9781405167482 | edited by David L. Hayes, Paul A. Friedman.

• 1 clinically relevant basic of pacing and defebrillation

• Were is the SA node located

  At the junction of the right atrium and the superior vena cava

• Which bundle conduct the pulse through the left and the right atria

  Bachmans bundle

• What is the Function of the AV node

  Physiological delay between atrial and ventricular contraction
  can function as a pacemaker
  regulate the number of impulses reaching the ventricels

• Cardiac conduction system

  SA node
  AV node
  Purkinje fibers -> the bundle of HIS
  diverse bundle branches

• 1.1.1 Electrophysiology of myocardial stimulation

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• What creats phase 0 of the action potential

  Influx of extracellular NA+ into the myocyte

• What happens in Phase 1 of the action potential

  Short period of overshoot potential to + 20mV

• What is Phase 2 of the action potential

  Plateau period created by the inward calcium and NA+ balanced against outward K+ currents.

• What happens in Phase 4 of the action potential

  The gradual opward drift in transmembrane potential repeats.

• How does neighbouring cells depolarisize

  Passive conductionvia low resistance inetrcellular connections called the gap junctions

• 1.1.1.1 Pacing basics stimulation threshold

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• What is called the stimulation threshold

  The minimal amount of energy required to produce this polarization