Which of the following is true about perioperative 5-lead telemetry monitoring in noncardiac surgery patients?
A. Leads II and V5 have equivalent sensitivity for myocardial ischemia.
B. Leads II, V4, and V5, when used together, have superior sensitivity to detect myocardial ischemia.
C.Lead II has superior sensitivity for myocardial ischemia compared to lead V5.
D. Lead V5 has superior sensitivity for rate and rhythm disturbances compared to lead II.
E. Lead V4 has less sensitivity than lead V2 for myocardial ischemia
答案解析：
几项研究已经证明，与肢体导联相比，胸前导联检测围手术期心肌缺血的灵敏度更优。London等证明，胸前导联V4和V5分别具有最高的灵敏度。联合Ⅱ、V4、V5导联敏感性为96%，加用V2、V3后提高到100%。这强调了在存在临床问题时适当放置电极导线以及审查所有电极导线的重要性。
正确答案：B
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