Цитата:
Сообщение от mimoshla
Да нет. Ни скорость 50 не поможет, ни лупа.
По-Вашему, "конец QT должен вровень с изолинией быть"?
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У меня зрение давно подорвано книгами и компьютером, так что помимо очков лупой часто пользуюсь для четкости.
Если возвращаться к дефинициям из того же источника, то там это не совсем изолиния, а сегмент ТР.
Цитата:
The problems associated with this measurement include the following: 1) recognizing the onset of the QRS complex and the end of the T wave, 2) determining the appropriate lead(s) in which to measure the QT interval, and 3) adjusting the QT interval for increases in QRS duration, gender, and rate.
...or that the downslope of the T wave be extended by drawing a tangent to the steepest proportion of the downslope until it crosses the TP segment. It should be recognized that defining the end of the T wave in these ways might underestimate the QT interval.
Recommendation
It is recommended that selective subsets of temporally aligned superimposed ECG leads be made available as an optional display to facilitate QT measurement and to validate the onset and end points of the QT interval. In view of the clinical importance of QT-interval prolongation, it is essential to visually validate QT-interval prolongation reported by a computer algorithm.
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