Variant Angina with Spontaneously Documented Ischemia- and Tachycardia-induced 'Lambda' Waves
| Autor: | Kaori Ikeda, Shigeki Uemura, Takafumi Okura, Koji Takahashi, Shuntaro Ikeda, Tomoki Sakaue, Nobuhisa Yamamura, Daijiro Enomoto, Mina Yamashita |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Angina Pectoris
Variant Tachycardia medicine.medical_specialty lambda wave Myocardial ischemia Ischemia Case Report 030204 cardiovascular system & hematology Anterior Descending Coronary Artery Lambda Angina Supraventricular extrasystole Electrocardiography 03 medical and health sciences 0302 clinical medicine Internal medicine Internal Medicine medicine Humans cardiovascular diseases proximal left anterior descending coronary artery business.industry Arrhythmias Cardiac General Medicine medicine.disease variant angina transmural conduction delay left septal fascicular block cardiovascular system Cardiology 030211 gastroenterology & hepatology Left anterior fascicular block medicine.symptom business left anterior fascicular block circulatory and respiratory physiology |
| Zdroj: | Internal Medicine |
| ISSN: | 1349-7235 0918-2918 |
| Popis: | In a patient with variant angina of the proximal left anterior descending coronary artery, myocardial ischemia changed the QRS-ST-T configurations without J-waves into those resembling “lambda” waves at maximal ST-segment elevation, and couplets or triplets of supraventricular extrasystole (SVE) changed the ischemia-induced “lambda” waves into QRS-ST-T configurations resembling a “tombstone” morphology or “monophasic QRS-ST complex.” At the resolution phase of coronary spasm, the QRS-ST-T configurations returned to those without J-waves and were changed by SVE into “lambda” waves. Interestingly, neither ischemia- nor SVE-induced “lambda” waves or SVE-induced “tombstone” morphology or “monophasic QRS-ST complex” were complicated by ventricular tachyarrhythmia. |
| Databáze: | OpenAIRE |
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