The poor performance of RSR' pattern on electrocardiogram lead V1 for detection of secundum atrial septal defects in children
- PMID: 22910098
- DOI: 10.1016/j.jpeds.2012.07.017
The poor performance of RSR' pattern on electrocardiogram lead V1 for detection of secundum atrial septal defects in children
Abstract
Objective: To assess the accuracy of RSR' patterns in lead V1 (RSR'-V1) in diagnosing atrial septal defects (ASDs) in children.
Study design: Children who underwent an electrocardiogram (ECG) during 2010 were divided into 2 ECG groups: RSR'-V1 and normal (no RSR'-V1). Children who underwent an echocardiogram during 2010 were also divided into an ASD group and a normal echocardiogram group. The 4 groups were matched in a 2 × 2 table format where the RSR'-V1 was the "test" and ASD was the "disease." Sensitivity, specificity, positive/negative predictive values, and pre/post-test probabilities were calculated.
Results: There were 4658 ECG studies included in the analysis: 836 had RSR'-V1 and 3822 were normal without RSR'-V1. Of 4935 echocardiographic studies analyzed, 329 had an ASD and 4606 were normal; 1363 patients had both studies done during the study period. The ECG sensitivity for diagnosing an ASD was 36.1%, specificity was 80%, positive predictive value was 14.7%, and negative predictive value was 92.9% with an overall accuracy of 76.2%. Patients with ASD and RSR'-V1 were significantly older than patients with ASD and no RSR'-V1 pattern.
Conclusion: RSR'-V1 is a poor screening test for the detection of ASD. It should not change the clinical suspicion or the decision to obtain an echocardiogram. Older children without RSR'-V1 on ECG are unlikely to have an ASD.
Copyright © 2013 Mosby, Inc. All rights reserved.
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