A Novel Method for Patient-Specific QTc-Modeling QT-RR Hysteresis
نویسندگان
چکیده
منابع مشابه
Subject-specific profiles of QT/RR hysteresis.
The time lag of the QT interval adaptation to heart rate changes (QT/RR hysteresis) was studied in 40 healthy subjects (18 females; mean age, 30.4+/-8.1 yr) with 3 separate daytime (>13 h) 12-lead electrocardiograms (ECG) in each subject. In each recording, 330 individual 10-s ECG segments were measured, including 100 segments preceded by 2 min of heart rate varying greater than +/-2 beats/min....
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QT-RR hysteresis is characterized by longer QT intervals at a given RR interval while heart rates are increasing during exercise and shorter QT intervals at the same RR interval while heart rates are decreasing during recovery. It has been attributed to a lagging QT response to different directional changes in RR interval during exercise and recovery. Twenty control subjects (8 males, age 51 ± ...
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ژورنال
عنوان ژورنال: Annals of Noninvasive Electrocardiology
سال: 2011
ISSN: 1082-720X
DOI: 10.1111/j.1542-474x.2010.00401.x