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2014 ; 55
(9
): 451-4; quiz 455
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Electrocardiography series Narrow QRS-complex tachycardia: part 2
#MMPMID25273927
Singh D
; Teo SG
; Omar AR
; Poh KK
Singapore Med J
2014[Sep]; 55
(9
): 451-4; quiz 455
PMID25273927
show ga
We discuss two cases of incessant atrial tachycardia (AT), including the
presentation and clinical course. It is important to differentiate AT from other
causes of supraventricular tachycardia, such as atrioventricular nodal reentrant
tachycardia (AVNRT) and atrioventricular reentrant tachycardia (AVRT), as it
would have implications on clinical management. Electrocardiographic features of
AT, especially the presence of an AV Wenckebach phenomenon with 'grouped
beating', are critical for differentiating AT from AVRT and AVNRT. It is also
vital to identify the P waves and their relations to QRS on electrocardiography,
as this would aid in the differentiation of various supraventricular
tachycardias.