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Titolo:
RESOLUTION OF LATE POTENTIALS WITH IMPROVEMENT IN LEFT-VENTRICULAR SYSTOLIC FUNCTION IN PATIENTS WITH FIRST ACUTE MYOCARDIAL-INFARCTION
Autore:
MASUI A; TAMURA K; TARUMI N; KAMIHATA H; KARAKAWA M; TAKEHANA K; SUGIURA T; IWASAKA T; INADA M;
Indirizzi:
39 MYORAKU UJI KYOTO 611 JAPAN KANSAI MED UNIV,DEPT INTERNAL MED 2,CTR CARDIOVASC OSAKA JAPAN
Titolo Testata:
Clinical cardiology
fascicolo: 5, volume: 20, anno: 1997,
pagine: 466 - 470
SICI:
0160-9289(1997)20:5<466:ROLPWI>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
SIGNAL-AVERAGED ELECTROCARDIOGRAM; TISSUE PLASMINOGEN-ACTIVATOR; 12-MONTH FOLLOW-UP; NATURAL-HISTORY; TRIAL; THROMBOLYSIS; ARRHYTHMIAS; DYSFUNCTION; REDUCTION; ISCHEMIA;
Keywords:
LATE POTENTIALS; INFARCT-RELATED ARTERY; LEFT VENTRICULAR SYSTOLIC FUNCTION; STUNNED MYOCARDIUM; HIBERNATING MYOCARDIUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
A. Masui et al., "RESOLUTION OF LATE POTENTIALS WITH IMPROVEMENT IN LEFT-VENTRICULAR SYSTOLIC FUNCTION IN PATIENTS WITH FIRST ACUTE MYOCARDIAL-INFARCTION", Clinical cardiology, 20(5), 1997, pp. 466-470

Abstract

Background: Ventricular late potentials predict subsequent arrhythmicevents and sudden death in postinfarction patients. Late potentials are recorded in the infarcted area, but it should be pointed out that they probably represent micropotentials in the area of delayed conduction found among isolated areas of scar tissue and normal myocardium. Hypothesis: The study was undertaken to investigate the relationship between chronic reversible myocardial ischemia, such as stunned or hibernating myocardium, and late potentials in 38 patients with a first myocardial infarction. Methods: The patients were divided into two groups,one with (Group 1) and one without (Group 2) resolution of late potentials recorded by signal-averaged electrocardiogram at 6 months after onset of myocardial infarction. We investigated the clinical, echocardiographic, and signal-averaged electrocardiographic characteristics ofGroups 1 and 2. Results: In the chronic phase of myocardial infarction, a higher incidence of patency of the infarct-related artery and an improvement of wall motion score were found in Group 1, and left ventricular ejection fraction was better preserved in Group 1 than in Group2. Conclusions: These results suggest that the resolution of late potentials was influenced by the improvement of left ventricular systolicfunction and patency of the infarct-related artery. We concluded thatchronic reversible myocardial ischemia, such as stunned or hibernating myocardium, might be the substrate that generated late potentials.

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Documento generato il 01/12/20 alle ore 10:33:34