Clinical significance of changes in electrocardiographic R-wave voltage on chest leads in patients with acute anterior myocardial infarction
| Autor: | Mitsuhiro Yokota, Takahisa Kondo, Akitada Ando, Mamoru Nanasato, Hideo Izawa, Makoto Nonokawa, Makoto Hirai, Mitsuhiro Okada, Satoshi Isobe, Yoshifumi Tanahashi, Hidehiko Saito |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Male
medicine.medical_specialty medicine.medical_treatment Myocardial Infarction Revascularization Electrocardiography QRS complex Internal medicine medicine Humans Clinical significance cardiovascular diseases Lead (electronics) Tomography Emission-Computed Single-Photon Ejection fraction medicine.diagnostic_test Iodobenzenes business.industry Fatty Acids Middle Aged Acute anterior myocardial infarction Thallium Radioisotopes Echocardiography Cardiology Female Cardiology and Cardiovascular Medicine business Emission computed tomography |
| Zdroj: | Journal of Electrocardiology. 35:173-180 |
| ISSN: | 0022-0736 |
| DOI: | 10.1054/jelc.2002.33761 |
| Popis: | This article aims to clarify the clinical significance of changes in electrocardiographic (ECG) R-wave voltage on chest leads from 1 to 4 weeks in patients with acute anterior myocardial infarction (MI) in combination with echocardiographic findings and dual scintigraphic findings. Seventy-one patients with acute anterior MI who underwent emergency revascularization were subjected to ECG and echocardiography, at both 1 and 4 weeks, and to thallium-201 (TI) and iodine-123-beta-methyl-p-iodophenyl pentadecanoic acid (BMIPP) single-photon emission computed tomography (SPECT) about 1 week after the onset of MI. The total sum of ECG R-wave voltage on each chest lead was calculated. The mean defect ratio on TI and that on BMIPP derived from circumferential profile curve analysis were calculated. The percentage defect-discordant ratio of both SPECT images [(%) discordance on TI/BMIPP] was obtained. The percentage increase ratio of ECG R-wave voltage on chest leads [(%) increase of R wave] and the increase of left ventricular ejection fraction (DeltaEF) from 1 to 4 weeks were obtained. There were significant correlations between the (%) increase of R wave and the DeltaEF as well as between the (%) increase of R wave and the (%) discordance on TI/BMIPP (r =.63, P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect