Performance of a body surface mapping system using emergency physician real-time interpretation - 13/08/11
, Christopher J. Lindsell, PhD a, Brian J. O'Neil, MD b, W. Brian Gibler, MD aAbstract |
Objective |
We compared the performance characteristics of the 12-lead electrocardiography (ECG) with body surface mapping (BSM) in patients presenting for evaluation of symptoms suggestive of acute coronary syndromes.
Methods |
The diagnostic test characteristics (sensitivity, specificity, likelihood ratios, and predictive values) for 12-lead ECG and BSM were computed using 3 different criterion standards.
Results |
Of the 150 patients enrolled, 19 were positive for acute coronary syndromes using the criterion standard of cardiac troponin T >0.1 ng/mL, percutaneous coronary intervention, more than 70% stenosis, abnormal noninvasive testing, and coronary artery bypass graft. Changes not known to be old on ECG and BSM had sensitivities of 10.5 (95% confidence interval [CI95], 1.8-34.5) and 15.8 (CI95, 4.2-40.5), and specificities of 90.1 (CI95, 83.3-94.4) and 86.3 (CI95, 78.9-91.4), respectively.
Conclusion |
In this emergency department population, both the BSM and the 12-lead ECG exhibited similar test characteristics.
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| Presented in part at the American College of Emergency Physicians Research Forum, San Francisco, CA, October 17-18, 2004. |
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| Presented in part at the American College of Emergency Physicians Research Forum, Seattle, WA, October 8-9, 2007. |
Vol 27 - N° 7
P. 816-822 - septembre 2009 Retour au numéro
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