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Titolo:
Ischemia-induced changes of the signal-averaged electrocardiogram: Experimental investigation during percutaneous transluminal coronary angioplasty balloon-occluded coronary artery
Autore:
Steinbigler, P; Haberl, R; Steinbeck, G;
Indirizzi:
Univ Munich, Med Hosp 1, D-81366 Munich, Germany Univ Munich Munich Germany D-81366 , Med Hosp 1, D-81366 Munich, Germany
Titolo Testata:
JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY
fascicolo: 10, volume: 10, anno: 1999,
pagine: 1316 - 1322
SICI:
1045-3873(199910)10:10<1316:ICOTSE>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACUTE MYOCARDIAL-INFARCTION; VENTRICULAR LATE POTENTIALS; TERMINAL QRS COMPLEX; TACHYCARDIA; HEART;
Keywords:
signal averaging; late potentials; ventricular fibrillation; ischemia;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Steinbigler, P Univ Munich, Med Hosp 1, Marchioninistr 15, D-81366 Munich,Germany Univ Munich Marchioninistr 15 Munich Germany D-81366 rmany
Citazione:
P. Steinbigler et al., "Ischemia-induced changes of the signal-averaged electrocardiogram: Experimental investigation during percutaneous transluminal coronary angioplasty balloon-occluded coronary artery", J CARD ELEC, 10(10), 1999, pp. 1316-1322

Abstract

Introduction: The influence of myocardial ischemia on the detection of an arrhythmogenic substrate with the signal-averaged ECG is unclear. Methods and Results: In 80 patients with single vessel coronary artery disease and a critical stenosis of the left anterior descending vessel selected after coronary angiography in whom percutaneous transluminal coronary angioplasty (PTCA) was planned, we retrospectively investigated the signal-averaged ECGs in the time domain before, during, and after occlusion of the coronary artery by the PTCA balloon. Forty patients were resuscitated from ventricular fibrillation (VF group), and 40 patients had no ventricular arrhythmia (non-VF group). Late potentials were seen at rest in 26 of 40 patients in the VF group, During ischemia, the duration of the filtered QRS complex and the duration of low-amplitude signals < 40 mu V increased significantly. In another 14 patients in the VF group, late potentials were observed only during ischemia, In 4 of 26 patients in the VF group without prior infarction but with severe ischemia present at rest, successful PTCA eliminatedpreexistent late potentials. In the non-VF group, one patient had late potentials present at rest. In two patients with prior infarction, late potentials were provokable only during transmural ischemia,Conclusion: Myocardial ischemia is able to modify detection of an arrhythmogenic substrate with the signal-averaged EGG.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 17:22:16