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* Younger patient with known paroxysmal tachycardias and who is hemodynamically stable = most like SVT
 
* Younger patient with known paroxysmal tachycardias and who is hemodynamically stable = most like SVT
 
== The ACC algorithm <cite>ACC</cite>==
 
== The ACC algorithm <cite>ACC</cite>==
[[File:VT_algorythm_en.png|800px|thumb|left|SVT vs VT algorhytm. Adapted from <cite>ACC</cite>]]
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[[File:VT_algorythm_en.svg|800px|thumb|left|SVT vs VT algorhytm. Adapted from <cite>ACC</cite>]]
 
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==ECG algorithms to differentiate wide QRS-complex tachycardias==
 
==ECG algorithms to differentiate wide QRS-complex tachycardias==
 
Several ECG algorithms have been developed to differentiate wide QRS-complex tachycardias. Most of them performed very well in the population they were based upon. A recent review tested five commonly used algorithms in a control population and found that each of them only performed reasonably well in differentiating VT from SVT (accuracy 66-77%).<cite>Jastrzekbsi</cite> The five criteria tested were:
 
Several ECG algorithms have been developed to differentiate wide QRS-complex tachycardias. Most of them performed very well in the population they were based upon. A recent review tested five commonly used algorithms in a control population and found that each of them only performed reasonably well in differentiating VT from SVT (accuracy 66-77%).<cite>Jastrzekbsi</cite> The five criteria tested were:

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