Predictive value of electrocardiogram to acute inferior myocardial infarction induced by right coronary artery lesion
MEI Zhi-liang
ZHANG Zhi-ling
ZHOU Shu-lan
Abstract：Objective To investigate lesion of right coronary artery (RCA) and judge whether RCA being dominant vessel and its predictive value to acute ST-segment elevation inferior myocardial infarction through analyzing surface electrocardiogram (ECG).Methods The outcomes of 18-lead ECG were retrospectively analyzed in 84 patients after confirming RCA being related artery of inferior myocardial infarction.Results There were 62 patients with proximal lesion of RCA and 22 with distal lesion of RCA. Among patients with proximal lesion of RCA, there were 56 patients with STV4R elevation≥l mm (positive rate was 90.3%) and 52 with STV1-V2 elevation≥2 mm (positive rate was 83.9%). Among patients with distal lesion of RCA, there was 0 patient with STV4R elevation≥l mm and 1 with STV1-V2 elevation≥2 mm (positive rate was 4.5%). There were 56 patients with RCA-dominant infarction and 28 with non-RCA-dominant infarction. Among patients with RCA-dominant infarction, there were 50 with STV5-V6 elevation≥1 mm (positive rate was 89.3%), and among patients with non-RCA-dominant infarction, there was 0 with STV5-V6 elevation≥1 mm.Conclusion To the patients with ST-segment elevation inferior myocardial infarction induced by lesion of RCA, STV4R elevation≥l mm and STV1-V2 elevation≥2 mm have great value to recognize proximal occlusion of RCA, and STV5-V6 elevation≥1 mm at the same time indicates that patients with RCA-dominant infarction, which has higher specificity and sensitivity in diagnosis.
Keywords：Acute inferior myocardial infarctionRight coronary arteryElectrocardiogramPredictive value
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：2( 251-252 )