Reproducibility and Reliability of the Computer Assisted Procedure using Tangent Line Method in QT Interval Measurement
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- Yashima Masaaki
- Department of Internal Medicine, Nippon Medical School
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- Katoh Takao
- Department of Internal Medicine, Nippon Medical School
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- Yoshida Akemi
- ECG Analysis Dept., Dia Medical Net, Inc.
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- Kosugiyama Ai
- ECG Analysis Dept., Dia Medical Net, Inc.
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- Sekiguchi Seiji
- ECG Analysis Dept., Dia Medical Net, Inc.
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- Mizuno Kyoichi
- Department of Internal Medicine, Nippon Medical School
Bibliographic Information
- Other Title
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- 新たに開発したコンピュータ補助接線法によるQT間隔計測システム(キャプテン-QT)の再現性と信頼性
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Abstract
Recently, ICH-E14 guidelines were published by the Ministry of Health, Labor and Welfare. As a result, an accurate and reliable QT interval measurement method is required in a clinical trial. We investigated the reliability of the computer assisted procedure using the tangent line method in QT interval measurement from the results of a training program for three laboratory technicians. In 12-lead electrocardiogram from 20 healthy volunteers, QT interval was measured twice by three trainee technicians for two beats of each lead (480 measurements). Averaged QT intervals measured by two expert technicians were used as a reference. Inter-observer difference (between each trainee data and the reference data) and intra-observer difference (between the first and the second measurements) were evaluated. The inter-observer differences for the three trainee technicians were 0.8+6.2 msec,0.1+5.7 msec, and 2.1+6.5 msec, and correlation coefficient of their measurement for two times was 0.94-0.97. The present semi-automated QT-interval measurement system, which depends on simple tangent line setting work, showed sufficient reliability and reproducibility in a short technician training program.
Journal
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- Japanese Journal of Electrocardiology
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Japanese Journal of Electrocardiology 32 (2), 137-144, 2012
Japanese Heart Rhythm Society
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Details 詳細情報について
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- CRID
- 1390001204773431296
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- NII Article ID
- 130005086432
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- ISSN
- 18842437
- 02851660
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed