n CME : Your SA Journal of CPD - Narrow QRS complex tachycardias : ECG education




Narrow QRS complex tachycardias are SVTs. <br>If irregular, consider AFib. <br>If regular and not ST or obvious atrial flutter, perform a vagal manoeuvre or give adenosine. <br>If the SVT terminates, it is an AV junction-dependent tachycardia. <br>If the SVT slows with some degree of AV block, underlying atrial tachycardia or atrial flutter will be revealed. <br>Many regular SVTs are curable by ablation therapy and therefore should be referred. <br>In these 2 arrhythmias, ablation therapy is not only the treatment of choice but now considered first-line therapy as it is curative and obviates long-term drug control.


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