Rhythm diagnosis in regular wide complex tachycardia: Difference between revisions
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== VTach vs. SVT == | == VTach vs. SVT == | ||
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== See Also == | == See Also == | ||
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7/2/09 Pani 4/2/10 Niemann | 7/2/09 Pani 4/2/10 Niemann | ||
<br/>[[Category:Cards]] | <br/><br/> | ||
[[Category:Cards]] <br/> | |||
Revision as of 02:12, 8 April 2011
Brugada's Criteria
- Lack of precordial RS complex. yes=VT
- R onset to S nadir > 100ms of 2.5 sm boxes in one precordial lead. yes=VT
- AV dissociation. yes=VT
- Morphology criteria for VT present both in precordial leads v1-2 and v6. yes-VT
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
Source
7/2/09 Pani 4/2/10 Niemann