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      • Record: found
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      "Echocardiography in Nigeria: use, problems, reproducibility and potentials"

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          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Background

          Although echocardiography is a useful and cost-effective technique for the detection of morphological and functional cardiac abnormalities, it has a main limitation in its subjectivity. Therefore the aim of the present study was to assess the intra-observer reproducibility and validity of 2-dimensional guided M-mode echo measurements at a Nigerian metropolitan Hospital

          Methods

          Standard echocardiographic examination was performed on twenty randomly selected patients (11 men and 9 women) aged 59.8 ± 12.6 years in two different sessions seven days apart.

          Results

          A good degree of intraobserver agreement was observed between test 1 and test 2. The correlation coefficient between the first and second studies ranged between 0.60 and 0.96; measurement errors between 0.050 and 0.205.

          Conclusion

          We would conclude that 2-dimensional guided M-mode measurements at echocardiography performed at our centre are reproducible with low intra-observer variability.

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          Most cited references38

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          Statistical methods for assessing agreement between two methods of clinical measurement.

          J Bland, D Altman (1986)
          In clinical measurement comparison of a new measurement technique with an established one is often needed to see whether they agree sufficiently for the new to replace the old. Such investigations are often analysed inappropriately, notably by using correlation coefficients. The use of correlation is misleading. An alternative approach, based on graphical techniques and simple calculations, is described, together with the relation between this analysis and the assessment of repeatability.
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            Echocardiographic assessment of left ventricular hypertrophy: comparison to necropsy findings.

            Richard Devereux, Daniel R. Alonso, Elizabeth M. Lutas … (1986)
            To determine the accuracy of echocardiographic left ventricular (LV) dimension and mass measurements for detection and quantification of LV hypertrophy, results of blindly read antemortem echocardiograms were compared with LV mass measurements made at necropsy in 55 patients. LV mass was calculated using M-mode LV measurements by Penn and American Society of Echocardiography (ASE) conventions and cube function and volume correction formulas in 52 patients. Penn-cube LV mass correlated closely with necropsy LV mass (r = 0.92, p less than 0.001) and overestimated it by only 6%; sensitivity in 18 patients with LV hypertrophy (necropsy LV mass more than 215 g) was 100% (18 of 18 patients) and specificity was 86% (29 of 34 patients). ASE-cube LV mass correlated similarly to necropsy LV mass (r = 0.90, p less than 0.001), but systematically overestimated it (by a mean of 25%); the overestimation could be corrected by the equation: LV mass = 0.80 (ASE-cube LV mass) + 0.6 g. Use of ASE measurements in the volume correction formula systematically underestimated necropsy LV mass (by a mean of 30%). In a subset of 9 patients, 3 of whom had technically inadequate M-mode echocardiograms, 2-dimensional echocardiographic (echo) LV mass by 2 methods was also significantly related to necropsy LV mass (r = 0.68, p less than 0.05 and r = 0.82, p less than 0.01). Among other indexes of LV anatomy, only measurement of myocardial cross-sectional area was acceptably accurate for quantitation of LV mass (r = 0.80, p less than 0.001) or diagnosis of LV hypertrophy (sensitivity = 72%, specificity = 94%).(ABSTRACT TRUNCATED AT 250 WORDS)
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              A formula to estimate the approximate surface area if height and weight are known

              D. DUBOIS, EF Dubois, EF DuBois … (1916)
              Article 0 comments Cited 56 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Cardiovasc Ultrasound
                Title: Cardiovascular Ultrasound
                Publisher: BioMed Central (London )
                ISSN (Electronic): 1476-7120
                Publication date Collection: 2006
                Publication date (Electronic): 21 March 2006
                Volume: 4
                Page: 13
                Affiliations
                [1 ]Department of Medicine, Federal Medical Centre, Idi-Aba, PMB 3031 Abeokuta, Nigeria
                [2 ]Department of Family Medicine, Federal Medical Centre, Idi-Aba, PMB 3031 Abeokuta, Nigeria
                Article
                Publisher ID: 1476-7120-4-13
                DOI: 10.1186/1476-7120-4-13
                PMC ID: 1440870
                PubMed ID: 16551364
                SO-VID: de276209-4102-4b13-9e85-2f1cb82eeef2
                Copyright © Copyright © 2006 Ogah et al; licensee BioMed Central Ltd.
                License:

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 14 January 2006
                Date accepted : 21 March 2006
                Categories
                Subject: Research

                ScienceOpen disciplines: Cardiovascular Medicine
                Data availability:
                ScienceOpen disciplines: Cardiovascular Medicine

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