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Serial changes in the high‐frequency ECG during the first year following acute myocardial infarction
Author(s) -
Trägårdh Elin,
Pahlm Olle,
Hedén Bo,
Sörnmo Leif,
Tägil Kristina,
Wagner Galen S.,
Pettersson Jonas
Publication year - 2006
Publication title -
clinical physiology and functional imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.608
H-Index - 67
eISSN - 1475-097X
pISSN - 1475-0961
DOI - 10.1111/j.1475-097x.2006.00691.x
Subject(s) - medicine , qrs complex , myocardial infarction , cardiology , electrocardiography
Summary Background: Previous studies have shown reduced high‐frequency QRS components (HF‐QRS) after acute myocardial infarction (MI). The purpose of this study was to investigate serial changes in HF‐QRS during the first year following acute MI. Methods: A total of 75 patients were included. Standard‐ and high‐frequency ECGs were recorded on five occasions during the year following the MI (a few days after the MI, after 6 weeks, and after 3, 6 and 12 months). Results: There was a statistically significant increase in HF‐QRS during the follow‐up year ( P = 0·002). There were no significant differences in HF‐QRS when comparing either the infarct location or the presence or absence of reperfusive therapy. Large differences in HF‐QRS were observed, both intra‐individually and inter‐individually, during the year. Conclusions: There was a statistically significant increase in HF‐QRS during the year following acute MI.