Rhythm diagnosis in regular wide complex tachycardia

Brugada's Criteria

1- Lack of precordial RS complex. yes=VT

2- R onset to S nadir > 100ms of 2.5 sm boxes in one precordial lead. yes=VT

3- AV dissociation. yes=VT

4- Morphology criteria for VT present both in precordial leads v1-2 and v6. yes-VT

- age >50

- h/o MI, CHF, CABG, ASHD, mitral valve prolapse, prev v tach

- cannon A waves

- variation in arterial pulse

- variable first heat sound

- fusion beats

- AV dissociation

- QRS > 0.14sec

- extreme LAD <-30degree

- no response to vagal maneuvers

- specific QRS pattern- V1- R, qR or RS

                                    V6- S, rS or qR

- concordance

- age <35

- mitral valve prolapse, esp c h/o WPW

- prev SVT

- no cannon A waves

- no variability in arterial pulse

- no variability of first heart sound

- no fusion beats

- p waves preceding qrs cmplx

- QRS usually <0.14 sec

- axis normal or slightly abnormal

- slow or terminate with vagal maneuver

- specific QRS pattern- V1-rsR'

                                    V6qRs (R wave in V1 or V2 < 1 box wide)

7/2/09 Pani

4/2/10 Niemann

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