Pattern of crescendo TWA may disclose the underlying cardiac pathology
| Autor: | Jari Viik, Rami Lehtinen, Mika Kähönen, Richard L. Verrier, Kjell Nikus, Willi Kaiser, Tuomo Nieminen, Terho Lehtimäki |
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| Rok vydání: | 2010 |
| Předmět: |
Male
medicine.medical_specialty Heart disease Disease Ventricular tachycardia Coronary Angiography Diagnosis Differential Electrocardiography Heart Conduction System Internal medicine medicine Humans Brugada syndrome medicine.diagnostic_test business.industry Coronary Stenosis T wave alternans Middle Aged medicine.disease Concomitant Cardiology Exercise Test Tachycardia Ventricular Differential diagnosis Cardiology and Cardiovascular Medicine business |
| Zdroj: | Journal of electrocardiology. 43(5) |
| ISSN: | 1532-8430 |
| Popis: | We present an exercise test case in which crescendo TWA preceded ventricular tachycardia (VT). The patient was examined due to suspicion of ischemic heart disease. The ST-segment became elevated simultaneously with a distinct alternation in the ST-segment and the first half of the T-wave, and the patient developed polymorphic VT. Coronary angiography disclosed marked stenoses. Earlier reports of TWA in patients with congenital long QT syndrome show a pattern in which the T wave frequently alternates above and below the isoelectric line without concomitant ST-segment changes. In Brugada syndrome patients, the signature ST-T wave pattern is the locus of alternation. Future investigation should elucidate whether specific TWA morphologies may expose underlying heart disease. |
| Databáze: | OpenAIRE |
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