Capability of myocardial revascularization to modify late potentials in old myocardial infarction

M. S. Negroni, C. Klersy, V. Marchiano, L. Menicanti, A. Frigiola, M. Chimienti, L. De Ambroggi

Research output: Contribution to journalArticle

Abstract

Ventricular late potentials (LP) recorded on the body surface in pts with old myocardial infarction (MI) are considered to reflect slow conduction, due to the presence in the infarct border zone of fibers of viable myocardium within ischemic and scarring tissue. To assess whether myocardial revascularization could influence the electrophysiologic dishomogeneity responsible for the occurrence of LP, 80 pts, 75 males and 5 females, aged 55 ± 9 yrs, with old MI (anterior in 24, inferior in 37 anterior and inferior in 5 and non Q in 14 pts), undergoing surgery, were studied. A Marquette Mac15 HiRes ECG recorder was used to identify LP before and after surgery; 250 beats (X, Y and Z Frank leads) were averaged and filtered at 40-250 Hz. Statistical analysis was performed, using logistic regression, to determine the significance of several selected covariates simultaneously. LP were present in 28 pts (35%) before surgery and disappeared in 11 of them (39%) thereafter. Persistence of LP after surgery was related to the presence of an inferior MI and of a ventricular aneurysm. These data suggest that revascularization is able to determine disappearance of LP, probably due to functional recovery of perinecrotic hibernated myocardium. In particular anatomic conditions (inferior MI, left ventricle aneurysm) this functional recovery seems not to be sufficient for the disappearance of LP.

Original languageEnglish
Pages (from-to)519-522
Number of pages4
JournalNew Trends in Arrhythmias
Volume7
Issue number4
Publication statusPublished - 1991

Fingerprint

Myocardial Revascularization
Myocardial Infarction
Inferior Wall Myocardial Infarction
Aneurysm
Myocardium
Heart Ventricles
Cicatrix
Electrocardiography
Logistic Models

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Capability of myocardial revascularization to modify late potentials in old myocardial infarction. / Negroni, M. S.; Klersy, C.; Marchiano, V.; Menicanti, L.; Frigiola, A.; Chimienti, M.; De Ambroggi, L.

In: New Trends in Arrhythmias, Vol. 7, No. 4, 1991, p. 519-522.

Research output: Contribution to journalArticle

@article{9c2d2a15f2dd4b4b8a33a25a7c2d5423,
title = "Capability of myocardial revascularization to modify late potentials in old myocardial infarction",
abstract = "Ventricular late potentials (LP) recorded on the body surface in pts with old myocardial infarction (MI) are considered to reflect slow conduction, due to the presence in the infarct border zone of fibers of viable myocardium within ischemic and scarring tissue. To assess whether myocardial revascularization could influence the electrophysiologic dishomogeneity responsible for the occurrence of LP, 80 pts, 75 males and 5 females, aged 55 ± 9 yrs, with old MI (anterior in 24, inferior in 37 anterior and inferior in 5 and non Q in 14 pts), undergoing surgery, were studied. A Marquette Mac15 HiRes ECG recorder was used to identify LP before and after surgery; 250 beats (X, Y and Z Frank leads) were averaged and filtered at 40-250 Hz. Statistical analysis was performed, using logistic regression, to determine the significance of several selected covariates simultaneously. LP were present in 28 pts (35{\%}) before surgery and disappeared in 11 of them (39{\%}) thereafter. Persistence of LP after surgery was related to the presence of an inferior MI and of a ventricular aneurysm. These data suggest that revascularization is able to determine disappearance of LP, probably due to functional recovery of perinecrotic hibernated myocardium. In particular anatomic conditions (inferior MI, left ventricle aneurysm) this functional recovery seems not to be sufficient for the disappearance of LP.",
author = "Negroni, {M. S.} and C. Klersy and V. Marchiano and L. Menicanti and A. Frigiola and M. Chimienti and {De Ambroggi}, L.",
year = "1991",
language = "English",
volume = "7",
pages = "519--522",
journal = "New Trends in Arrhythmias",
issn = "0393-5302",
number = "4",

}

TY - JOUR

T1 - Capability of myocardial revascularization to modify late potentials in old myocardial infarction

AU - Negroni, M. S.

AU - Klersy, C.

AU - Marchiano, V.

AU - Menicanti, L.

AU - Frigiola, A.

AU - Chimienti, M.

AU - De Ambroggi, L.

PY - 1991

Y1 - 1991

N2 - Ventricular late potentials (LP) recorded on the body surface in pts with old myocardial infarction (MI) are considered to reflect slow conduction, due to the presence in the infarct border zone of fibers of viable myocardium within ischemic and scarring tissue. To assess whether myocardial revascularization could influence the electrophysiologic dishomogeneity responsible for the occurrence of LP, 80 pts, 75 males and 5 females, aged 55 ± 9 yrs, with old MI (anterior in 24, inferior in 37 anterior and inferior in 5 and non Q in 14 pts), undergoing surgery, were studied. A Marquette Mac15 HiRes ECG recorder was used to identify LP before and after surgery; 250 beats (X, Y and Z Frank leads) were averaged and filtered at 40-250 Hz. Statistical analysis was performed, using logistic regression, to determine the significance of several selected covariates simultaneously. LP were present in 28 pts (35%) before surgery and disappeared in 11 of them (39%) thereafter. Persistence of LP after surgery was related to the presence of an inferior MI and of a ventricular aneurysm. These data suggest that revascularization is able to determine disappearance of LP, probably due to functional recovery of perinecrotic hibernated myocardium. In particular anatomic conditions (inferior MI, left ventricle aneurysm) this functional recovery seems not to be sufficient for the disappearance of LP.

AB - Ventricular late potentials (LP) recorded on the body surface in pts with old myocardial infarction (MI) are considered to reflect slow conduction, due to the presence in the infarct border zone of fibers of viable myocardium within ischemic and scarring tissue. To assess whether myocardial revascularization could influence the electrophysiologic dishomogeneity responsible for the occurrence of LP, 80 pts, 75 males and 5 females, aged 55 ± 9 yrs, with old MI (anterior in 24, inferior in 37 anterior and inferior in 5 and non Q in 14 pts), undergoing surgery, were studied. A Marquette Mac15 HiRes ECG recorder was used to identify LP before and after surgery; 250 beats (X, Y and Z Frank leads) were averaged and filtered at 40-250 Hz. Statistical analysis was performed, using logistic regression, to determine the significance of several selected covariates simultaneously. LP were present in 28 pts (35%) before surgery and disappeared in 11 of them (39%) thereafter. Persistence of LP after surgery was related to the presence of an inferior MI and of a ventricular aneurysm. These data suggest that revascularization is able to determine disappearance of LP, probably due to functional recovery of perinecrotic hibernated myocardium. In particular anatomic conditions (inferior MI, left ventricle aneurysm) this functional recovery seems not to be sufficient for the disappearance of LP.

UR - http://www.scopus.com/inward/record.url?scp=0026408106&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026408106&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0026408106

VL - 7

SP - 519

EP - 522

JO - New Trends in Arrhythmias

JF - New Trends in Arrhythmias

SN - 0393-5302

IS - 4

ER -