Juctional Rhythms

What would happen if the impulses were initiated in the AV junctional area?

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Premature Junctional Complex

There could be a NSR with a few early beats from the junctional area.

    a. The early beats would have a P wave that is inverted and short, hidden,

         or after the QRS.

     b. The rhythm would be irregular because of the early beat.

     c.  All other configurations would be normal.

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Junctional Escape Rhythms

There could be a NSR with a few late beats from the junctional area.

     a. The late beats would have a P wave that is inverted and short, hidden   
         or after the QRS.

     b. The rhythm would be irregular because of the early beat.

     c.  All other configurations would be normal.     .

 

Junctional Rhythm

The AV Junction could take over as a secondary pacemaker

      a. The rate would be < 60 because that is the intrinsic rate of the AV   
          Junctions
      b. The P wave is inverted, hidden or behind the QRS.
      c.  The rhythm would be regular
      d. If visible the PR would be < .12 and the QRS and T wave would be
           normal

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Accelerated Junctional Rhythm

There could be a NSR but because of enhanced automaticity there could be  
3 or more
early beats from the junctional area.

    a. The early beats would have a P wave that is inverted and short, hidden,

         or after the QRS.

     b. The rhythm would be irregular because of the early beats.

     c.  All other configurations would be normal.

     .

Junctional Tachycardia

The AV Junction could take over as a secondary pacemaker but the rate is fast.

      a. The rate would be > 100
      b. The P wave is inverted, hidden or behind the QRS.
      c.  The rhythm would be regular
      d. If visible the PR would be < .12 and the QRS and T wave would be
           normal

 

 

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