Test Findings
 

Incorrect ECG Lead Placement

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Overview

  • Reversal of arm leads (RA and LA)- inversion of lead I (negative P waves and QRS complexes)
  • Reversal of RA and LL - inversion of lead II (negative P waves and QRS complexes)
  • Reversal of LA and LL - inversion of lead III (negative P waves and QRS complexes)
  • Reversal of LA and LL + RA and RL - flattening of lead I (very low frequency waves)
  • Reversal of RA and RL - flattening of lead II (very low frequency waves)
  • Reversal of LA and RL - flattening of lead III (very low frequency waves)
  • Superior misplacement of V1 / V2 - poor R wave progression
  • No changes will be seen with reversal of LL and RL.
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