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Aspects of Left Ven...
Aspects of Left Ventricular Morphology Outperform Left Ventricular Mass for Prediction of QRS Duration
- Article/chapterEnglish2010
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LIBRIS-ID:oai:lup.lub.lu.se:7d4a6245-955e-4527-809f-5c50c204dbdd
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https://lup.lub.lu.se/record/1603981URI
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https://doi.org/10.1111/j.1542-474X.2010.00352.xDOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Methods: The study population of healthy adult volunteers was divided into a sample for development of a prediction model (n = 63) and a testing sample (n = 30). Magnetic resonance imaging data were used to assess anatomical characteristics of the left ventricle: the angle between papillary muscles (PMA), the length of the left ventricle (LVL) and left ventricular mass (LVM). Twelve-lead electrocardiogram (ECG) was used for measurement of the QRS duration. Multiple linear regression analysis was used to develop a prediction model to estimate the QRS duration. The accuracy of the prediction model was assessed by comparing predicted with measured QRS duration in the test set. Results: The angle between PMA and the length of the LVL were statistically significant predictors of QRS duration. Correlation between QRS duration and PMA and LVL was r = 0.57, P = 0.0001 and r = 0.45, P = 0.0002, respectively. The final model for prediction of the QRS was: QRS(Predicted) = 97 + (0.35 x LVL) - (0.45 x PMA). The predicted and real QRS duration differed with median 1 ms. Conclusions: The model for prediction of QRS duration opens the ability to predict case-specific normal QRS duration. This knowledge can have clinical importance, when determining the normality on case-specific basis. Ann Noninvasive Electrocardiol 2010;15(2):124-129.
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Steding Ehrenborg, KatarinaLund University,Lunds universitet,Klinisk fysiologi, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Clinical Physiology (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine(Swepub:lu)med-kns
(author)
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Engblom, HenrikLund University,Lunds universitet,Klinisk fysiologi, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Clinical Physiology (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine(Swepub:lu)klin-hen
(author)
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Tufvesson, JaneLund University,Lunds universitet,Klinisk fysiologi, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Clinical Physiology (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine(Swepub:lu)med-jsr
(author)
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Maynard, Charles
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Pahlm, OlleLund University,Lunds universitet,Klinisk fysiologi, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Clinical Physiology (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine(Swepub:lu)klfy-opa
(author)
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Klinisk fysiologi, LundSektion V
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In:Annals of Noninvasive Electrocardiology15:2, s. 124-1291082-720X
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