High-frequency electrocardiogram as a supplement to standard 12-lead ischemia monitoring during reperfusion therapy of acute inferior myocardial infarction.
J Electrocardiol
; 44(1): 11-7, 2011.
Article
em En
| MEDLINE
| ID: mdl-20488451
ABSTRACT
BACKGROUND:
Resolution of ST-segment elevation in the electrocardiogram (ECG) is used as a reperfusion sign during thrombolytic therapy in acute myocardial infarction. Analysis of high-frequency QRS components (HF-QRS) might provide additional information. The study compares changes in HF-QRS (150-250 Hz) to ST-segment changes in the standard ECG during thrombolytic therapy.METHODS:
Twelve patients receiving intravenous thrombolytic therapy were included. A continuous 12-lead ECG recording was acquired for 4 hours.RESULTS:
After 1 hour of therapy, 3 patients showed ST-elevation resolution as well as an increase in HF-QRS. These changes in ST and HF-QRS occurred simultaneously. No other patient showed significant changes in ST or HF-QRS after 1 hour. After 2 and 4 hours, there was less concordance between the standard and high-frequency ECGs.CONCLUSIONS:
In patients with early ST-elevation resolution, the standard and high-frequency ECGs show similar results. Later changes are more disparate and may provide different clinical information.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Reperfusão Miocárdica
/
Terapia Trombolítica
/
Eletrocardiografia
/
Infarto do Miocárdio
Tipo de estudo:
Diagnostic_studies
Limite:
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Electrocardiol
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Suécia