Accuracy of electrocardiography in diagnosis of left ventricular hypertrophy in arterial hypertension: systematic review
- PMID: 17726091
- PMCID: PMC2001078
- DOI: 10.1136/bmj.39276.636354.AE
Accuracy of electrocardiography in diagnosis of left ventricular hypertrophy in arterial hypertension: systematic review
Abstract
Objective: To review the accuracy of electrocardiography in screening for left ventricular hypertrophy in patients with hypertension.
Design: Systematic review of studies of test accuracy of six electrocardiographic indexes: the Sokolow-Lyon index, Cornell voltage index, Cornell product index, Gubner index, and Romhilt-Estes scores with thresholds for a positive test of > or =4 points or > or =5 points.
Data sources: Electronic databases ((Pre-)Medline, Embase), reference lists of relevant studies and previous reviews, and experts.
Study selection: Two reviewers scrutinised abstracts and examined potentially eligible studies. Studies comparing the electrocardiographic index with echocardiography in hypertensive patients and reporting sufficient data were included.
Data extraction: Data on study populations, echocardiographic criteria, and methodological quality of studies were extracted.
Data synthesis: Negative likelihood ratios, which indicate to what extent the posterior odds of left ventricular hypertrophy is reduced by a negative test, were calculated.
Results: 21 studies and data on 5608 patients were analysed. The median prevalence of left ventricular hypertrophy was 33% (interquartile range 23-41%) in primary care settings (10 studies) and 65% (37-81%) in secondary care settings (11 studies). The median negative likelihood ratio was similar across electrocardiographic indexes, ranging from 0.85 (range 0.34-1.03) for the Romhilt-Estes score (with threshold > or =4 points) to 0.91 (0.70-1.01) for the Gubner index. Using the Romhilt-Estes score in primary care, a negative electrocardiogram result would reduce the typical pre-test probability from 33% to 31%. In secondary care the typical pre-test probability of 65% would be reduced to 63%.
Conclusion: Electrocardiographic criteria should not be used to rule out left ventricular hypertrophy in patients with hypertension.
Conflict of interest statement
Competing interests: None declared.
Figures
Comment in
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Diagnosing left ventricular hypertrophy in arterial hypertension.BMJ. 2007 Oct 6;335(7622):681-2. doi: 10.1136/bmj.39344.470718.BE. BMJ. 2007. PMID: 17916817 Free PMC article.
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Ethnicity is relevant.BMJ. 2007 Oct 20;335(7624):787. doi: 10.1136/bmj.39367.371736.BE. BMJ. 2007. PMID: 17947749 Free PMC article. No abstract available.
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QRS voltage criteria can be useful.BMJ. 2007 Oct 20;335(7624):787. doi: 10.1136/bmj.39367.394155.BE. BMJ. 2007. PMID: 17947750 Free PMC article. No abstract available.
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A scientifically based technique.Dtsch Arztebl Int. 2008 Apr;105(15):292; author reply 292. doi: 10.3238/arztebl.2008.0292a. Epub 2008 Apr 11. Dtsch Arztebl Int. 2008. PMID: 19629235 Free PMC article. No abstract available.
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