Supine vs semirecumbent and upright 12-lead electrocardiogram: does change in body position alter the electrocardiographic interpretation for ischemia?
The American Journal of Emergency Medicine(2007)
摘要
Objective: The goal of this study was to determine if a change in body position alters the 12-lead electrocardiographic (ECG) interpretation for ischemia and ST-segment elevation, the latter having direct implications for initial patient management in the emergency department. Methods: Twelve-lead ECGs were sequentially obtained from a convenience sample of healthy adult volunteers in 3 positions (supine, 0 degrees; inclined, 45 degrees; and upright, 90 degrees). The tracings were randomized, blinded, and then independently read by 2 trained emergency medicine physicians who also assessed for the presence of ischemia and ST-segment elevation myocardial infarction. Results: Seventy-five subjects were enrolled, with 7 (9%; 95% confidence interval [CI], 4-18) having ischemia on the supine ECG, 9 (12%; 95% CI, 6-22) on the incline, and 9 on the upright tracings. ST-segment elevation myocardial infarction pattern was present on 2 (3%; 95% CI, 0-9) supine, 2 inclined, and 2 upright ECGs. Conclusions: Changes in body position result in some ischemic variations of the 12-lead ECG. (C) 2007 Elsevier Inc. All rights reserved.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络