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Archives of cardiovascular diseases
Volume 110, n° 8-9
pages 475-481 (août 2017)
Doi : 10.1016/j.acvd.2016.12.011
Received : 11 June 2016 ;  accepted : 17 December 2016
Fast, accurate and easy-to-teach QT interval assessment: The triplicate concatenation method
Nouvel outil rapide, précis et facile à enseigner de mesure du QT par concaténation d’ECG tripliqués

Figure 1

Figure 1 : 

Flow-chart depicting selection of 50 sets of triplicate electrocardiograms (ECGs).

Figure 2

Figure 2 : 

Flow-chart of electrocardiogram (ECG) readings: method 1 (TAM), method 2 (TCM)/first reading, second reading. TAM: triplicate averaging method; TCM: triplicate concatenation method.

Figure 3

Figure 3 : 

Superimposed median beat, with a display of vector magnitude (in green). Automatic calliper placements (PR, QRS and QT) and results (QT, PR, QRS, QTcB and QTcF), with the possibility of manual editing.

Figure 4

Figure 4 : 

Bland–Altman plot: triplicate averaging method (TAM) versus triplicate concatenation method (TCM) (expert reading). CI: confidence interval; LOA: limits of agreement.

Figure 5

Figure 5 : 

Bland–Altman plots. (A) Triplicate averaging method (TAM), expert versus student. (B) Triplicate concatenation method (TCM), expert versus student. CI: confidence interval; LOA: limits of agreement.

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