Rhythm diagnosis in regular wide complex tachycardia: Difference between revisions

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== Brugada's Criteria ==
== Brugada's Criteria ==


#Lack of precordial RS complex. yes=VT
#Absence of an RS complex in all precordial leads?
#R onset to S nadir > 100ms of 2.5 sm boxes in one precordial lead. yes=VT
##If yes then VT
#AV dissociation. yes=VT
#R to S interval >100ms in one precordial lead?
#Morphology criteria for VT present both in precordial leads v1-2 and v6. yes-VT
##If yes then VT
#AV dissociation
##If yes then VT
#Morphology criteria for VT present both in V1-2 and V6?
##If yes then VT
##If no then SVT


== VTach vs. SVT ==
== VTach vs. SVT ==

Revision as of 02:15, 8 April 2011

Brugada's Criteria

  1. Absence of an RS complex in all precordial leads?
    1. If yes then VT
  2. R to S interval >100ms in one precordial lead?
    1. If yes then VT
  3. AV dissociation
    1. If yes then VT
  4. Morphology criteria for VT present both in V1-2 and V6?
    1. If yes then VT
    2. If no then SVT

VTach vs. SVT


 V Tach SVT w/ Aberrancy
Age >50 <35
History MI, CHF, CABG, MVR MVR, WPW
Cannon A Waves Present Absent
Arterial Pulse Variation No variation
First heart sound Variable Not variable
Fusion Beats Present Absent
AV dissociation Present Absent
QRS >0.14sec <0.14sec
Axis Extreme LAD (< -30) Normal or slightly abnl
Vagal Maneuvers No response Slows or terminates
If RBBB present

V1 - R or qR

V6 - rS

V1 - RSR'

V6 - Rs

If LBBB present

V1/V2 - Broad R wave (>40msec)

V6 - Any Q or QS

V1/V2 - Small R

V6 - no Q

See Also

Tachycardia (Wide)


Source

7/2/09 Pani 4/2/10 Niemann




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