Artikel
Invisible Negative Sequence Voltages Before Spontaneous Ventricular Tachyarrhythmia In Patients With Acute Myocardial Infarction
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Autoren
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W. Carson
- National Taiwan University, Taipei, Taiwan
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Y.-Z. Tseng
- National Taiwan University, Taipei, Taiwan
| Veröffentlicht: | 8. Februar 2007 |
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Gliederung
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Question: Study (Am J Emerg Med 2003) of patients with acute aortic dissection (AAD) has found that abnormal sense of inscription direction (ASID) and L/W ratio of the T-loop in the emergency vectorcardiogram (VCG), are at high risk of post-operationally unexpected ventricular tachyarrhythmia (UVT). A further study (IJBEM 2003) of the P-loop found that the ASID had partial negative sequence (PNS) or complete negative sequence (CNS) type similar to the Physics problem of generators. Can patients with acute myocardial infarction (AMI) develop UVT in the same way as patients with AAD?
Method Used: A total of 121 patients with suspected AMI received serial recording of Frank VCG.
Results: Among them 25(21%) developed UVT. Seven had no VCG before their UVT and cardioversion. The remaining 18 patients, 13 (72%, 1 PNS, 2 PNS+CNS, and 10 CNS ) had the same abnormalities of the T-loop as the AAD patients; four had partial and one had no abnormality because the time gap between VCG and UVT was too wide (between 4-22 days).
Conclusion: Therefore, in AMI patients, once emergency VCG is documented as PNS or CNS of the T-loop with an abnormal L/W ratio, then Cardiologists should be stand by for UVT attack.
