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- W4206565111 abstract "In wide QRS tachycardia, analyze: AV dissociation, and the number of P waves compared to the number of QRS complexes. In narrow QRS tachycardia, assess the length of the RP interval. Thus, VT is diagnosed if either: AV dissociation is present, or QRS complexes outnumber P waves. P waves are often best seen in lead II, which is generally parallel to the spread of atrial depolarization, or leads with the smallest QRS and T wave. Monophasic QRS concordance in the precordial leads signifies that all QRS complexes in V 1 through V 6 are monophasic and pointing in the same direction, either upward or downward. In other words, these QRS complexes are either monophasic R or monophasic QS complexes. Atrial flutter and most subgroups of atrial tachycardia usually do not break but develop AV block with adenosine, which slows the QRS rate and allows one to see and assess the hidden P waves and make the diagnosis." @default.
- W4206565111 created "2022-01-26" @default.
- W4206565111 date "2022-01-14" @default.
- W4206565111 modified "2023-10-14" @default.
- W4206565111 title "Approach to Narrow and Wide QRS Complex Tachyarrhythmias" @default.
- W4206565111 cites W2026083345 @default.
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- W4206565111 doi "https://doi.org/10.1002/9781119832737.ch8" @default.
- W4206565111 hasPublicationYear "2022" @default.
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