Relation between QT interval dispersion and heart rate.
Because the relation between QT dispersion (QTd) and heart rate (HR) are different from that between QT interval and HR, QTd could be overadjusted at a high HR and be underadjusted at a slow HR if we use Bazett's formula to adjust QTd. HR adjustment of QTd is not needed to evaluate repolarization dispersion.
Umetani
K
K
The Second Department of Internal Medicine, Yamanashi Medical University, Nakakoma-gun, Japan. kenu@swallow.res-yamanashi-med-ac.jp
Komori
S
S
Ishihara
T
T
Sawanobori
T
T
Kohno
I
I
Ijiri
H
H
Tamura
K
K
D000368:Aged; D000369:Aged, 80 and over; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D012680:Sensitivity and Specificity; D012804:Sick Sinus Syndrome / Q000503:physiopathology* / Q000628:therapy