Open AccessCritical noise level reduction for correct identification of late potentials: An illustrative case report
Author(s) -
Kulakowski Piotr,
Murgatroyd Francis D.,
John Camm A.
Publication year - 1991
Publication title -
clinical cardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.263
H-Index - 72
eISSN - 1932-8737
pISSN - 0160-9289
DOI - 10.1002/clc.4960140915
Subject(s) - medicine , identification (biology) , reduction (mathematics) , noise (video) , artificial intelligence , computer science , image (mathematics) , botany , geometry , mathematics , biology
Abstract The precision of detection of late potentials (LPs) on signal‐averaged electrocardiography (SAECG) depends on the degree of noise reduction. The recommended low‐noise endpoint is 0.3 μV. We describe a patient with sustained ventricular tachycardia after myocardial infarction with very low amplitude LPs in whom a noise level lower than 0.3 μV was necessary in order to obtain an abnormal result of the SAECG. The presence of LPs was confirmed by spectral temporal mapping of the SAECG.