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Accuracy of a 12‐lead electrocardiogram in screening patients with suspected heart failure for open access echocardiography: a systematic review and meta‐analysis
Author(s) -
Khunti K.,
Squire I.,
Abrams K.R.,
Sutton A.J.
Publication year - 2004
Publication title -
european journal of heart failure
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.149
H-Index - 133
eISSN - 1879-0844
pISSN - 1388-9842
DOI - 10.1016/j.ejheart.2004.03.013
Subject(s) - medicine , heart failure , receiver operating characteristic , medline , meta analysis , gold standard (test) , observational study , cardiology , natriuretic peptide , electrocardiography , intensive care medicine , political science , law
Aim: The aim of this study was to examine the usefulness of 12‐lead electrocardiogram in screening patients with suspected heart failure for open access echocardiography. We carried out a systematic review and meta‐analysis of published observational studies. Published studies were identified in the Medline and Embase databases, this was supplemented by key texts, personal reference collections and examining the cited references in the above sources. English language articles in which patients were referred from primary care with a presumptive diagnosis of heart failure to an open access echocardiography service were reviewed. We included studies that reported both electrocardiography findings and echocardiography as a reference standard. Primary outcome measures were sensitivity and specificity, metaanalysed simultaneously to produce a Summary Receiver Operating Characteristic (SROC) curve. Results: Four trials were identified which satisfied the inclusion criteria, including 1419 people with a potential diagnosis of heart failure referred for open access echocardiography. Estimates of sensitivity and specificity varied greatly in individual studies. The area under the SROC curve was 0.84 (95% CI: 0.33 to 1.00). Conclusion: A 12‐lead electrocardiogram is an inadequate screening tool for identifying patients with suspected heart failure who require echocardiography. Further research is required to determine the usefulness of other screening strategies including B‐type natriuretic peptide in screening patients with suspected heart failure who need referral for open access echocardiography.