EKG 23-Answer

  • Rate:  74 bpm
  • Rhythm:  NSR, every 4th beat is dropped after the PR segment lengthens C/W second degree AV block type I (Mobitz type I)
  • Axis:   54
  • Intervals:  PR= 180-230ms, QRS< 120ms
  • Morphology:  Narrow QRS, no chamber enlargement, no BBB
  • ST segment:  No ischemic changes
  • T-waves:  No ischemic changes
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