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Flashcards

ECG Revision- PMU

Med Student Internal Medicne Medicine Inglês 30 flashcards

ECG Revision- PMU

Flashcards do conjunto (30)

  1. 1What is an ECG?Electrocardiogram - a graphical representation of the electrical activity of the heart
  2. 2What is sinus rhythm?Rhythm arising from the SA node
  3. 3What causes upward and downward deflections on an ECG?The direction of the current in relation to that electrode. Upwards = current flowing TOWARDS electrode
  4. 4In which general direction do electrical waves in the heart travel?In which general direction do electrical waves in the heart travel?
  5. 5How many electrodes does a 12 lead ECG have?10
  6. 6Where are the limb leads placed?Right arm, Left arm, Right ankle, Left ankle
  7. 7Which leads derive from the limb leads?Leads I,II,III and aVR, aVL, aVF
  8. 8What is lead I?Current from RA to LA
  9. 9What is lead II?Current from RA to LL
  10. 10What is lead III?Current from LA to LL
  11. 11What does the 4th limb lead (RL) do then?Acts as the 'ground' to give machine an idea of 0
  12. 12How is aVR derived?Compares RA to lead III
  13. 13How is aVL derived?compares LA with lead II
  14. 14How is aVF derived?compares LL to lead I
  15. 15How many chest leads are there?6
  16. 16How are these different to the limb leads?They are unipolar, so they measure current moving towards and away from themselves, not between 2 electrodes.
  17. 17Where is V1 placed?Right sternal edge, 4th ICS
  18. 18Where is V2 placed?Left sternal edge, 4th ICS
  19. 19Where is V3 placed?between V2 and V4
  20. 20Where is V4 placedAround apex beat, midclavicular line, 5th ICS
  21. 21Where is V5 placed?horizontal with V4, left anterior axillary line
  22. 22Where is V6 placed?Mid-axillary line, horizontal with V4+5
  23. 23How do you calculate the HR from an ECG?Count the number of squares between 2 QRS complexes.
  24. 24What does each small square (horizontally) represent?40msecs. 1500/no. of small squares = HR
  25. 25—First Degree AV BlockFirst Degree AV Block
  26. 26—2nd Degree AV Block- Type 1 (Wenkebach)2nd Degree AV Block- Type 1 (Wenkebach)
  27. 27—2nd Degree AV Block- Type 2 (Mobitz II)2nd Degree AV Block- Type 2 (Mobitz II)
  28. 28—3rd Degree AV Block3rd Degree AV Block
  29. 29—Atrial FibrillationAtrial Fibrillation
  30. 30—Atrial FlutterAtrial Flutter

Informações

Descrição
Basics to ECG
Criado por
Med Student
Visualizações
169
Histórico
  • Criado por Hannah Tribe · 27 abr 2014
  • Copiado por Med Student · 15 mar 2018
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