My Cardiology

  1. Outline the approach to interpreting an ECG
    • "An ECG does Not Really Require A Woman's Input"
    • Name
    • Rate
    • Rhythm
    • Axis
    • Waves
    • Intervals
  2. How is the heart rate measured and rhythm determined using an ECG?
    • 300 divided by the number of large boxes between each R spike. (0.6-1.2 seconds)
    • Mark a strip of paper at every R spike; abnormal/repetitive pattern?
  3. How is heart axis determined on an ECG?
    • Examine lead I and II
    • If the QRS complex of both are mostly positive = normal axis
    • If I-QRS positive and II-QRS negative, then posterior deviation
    • If opposite; I-negative, II positive then anterior deviation
  4. How are the waves of an ECG examined?
    • P: One per QRS, no bifidity [except v1]
    • ST: Elevation?
    • T: Inversion in V3-6 or I/II?
  5. What are the important intervals to note when examining an ECG?
    • PR: 1/2 - 1 full large box
    • QRS: 1/2 a large box
    • QT: 2 large boxes in II
  6. What are the common ECG findings in an acute MI?
    • ST segment elevation (>80ms)
    • Prominent, symmetrical, pointed T waves
  7. What are the ECG findings of 1st and 3rd degree heart block?
    • 1st degree: Prolonged PR interval (>0.2 secs); delayed conduction from atria-ventricles
    • 3rd: No relation between P and QRS; complete block of conduction
Card Set
My Cardiology
ECG, heart failure, IE