Change with exercise in QT dispersion in infarct-related myocardium after angioplasty

Akutsu, Yasushi; Li, Huiling; Shinozuka, Akira; Kodama, Yukinobu; Yamanaka, Hideyuki; Kubo, Takashi

doi:10.1016/j.ijcard.2003.12.029

Cited by 3 publications

(4 citation statements)

References 22 publications

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“…To our knowledge, this is the first study on exercise QTc dispersion in KD and one of just a few in children [37]. Based on our exercise protocol, healthy subjects increased QTc dispersion at peak exercise similar to healthy adults [1,32] whereas KD subjects had an attenuated response. Decreased dispersion was also observed during recovery, unlike controls.…”

Section: Discussionmentioning

confidence: 67%

Ventricular Repolarisation During Exercise Challenge Occurring Late After Kawasaki Disease

et al. 2012

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Exercise testing can highlight repolarisation abnormalities in adults with coronary artery disease. Late after Kawasaki disease (KD), increased QT dispersion (QTd) has been reported on resting ECG in children, but there are no reported studies of QTd during exercise. Our objective was to determine the pattern of QTd response to exercise testing in children late after KD. Twenty-five KD patients without coronary complications, 28 with coronary dilation, and 18 with severe complications were compared with 28 controls. KD patients were 11.6 ± 3.0 years old versus 12.8 ± 2.9 for controls [p = not significant (NS)], and these patients were studied 7.5 ± 3.4 years after the onset of the disease. QT was measured from the onset of QRS to the apex (QTa) and the end (QTe) of T wave. Resting QTd was significantly increased in KD subjects (p < 0.05). The proportion of abnormal QTd was evenly distributed across the three KD groups (29-36%; p = NS). QTd response to exercise was significantly altered in KD, irrespective of resting QTd or coronary sequelae. Abnormal resting- and exercise-induced repolarisation are detectible after KD irrespective of the severity of coronary sequelae.

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Section: Discussionmentioning

confidence: 67%

Ventricular Repolarisation During Exercise Challenge Occurring Late After Kawasaki Disease

et al. 2012

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“…This phenomenon was previously described in children following Kawasaki disease 39 . QTc dispersion has been reported to increase during exercise in healthy adults and to decrease towards baseline values during recovery, 40 whereas the pathologic QTc response has been mostly studied in coronary artery disease and is still equivocal, as it has been shown either to increase or remain unchanged from rest to peak exercise 40 41 Therefore, the significance of a blunted response of QTc dispersion to exercise remains to be elucidated.…”

Section: Discussionmentioning

confidence: 96%

“…This phenomenon was previously described in children following Kawasaki disease. 39 QTc dispersion has been reported to increase during exercise in healthy adults and to decrease towards baseline values during recovery, 40 whereas the pathologic QTc response has been mostly Table 3. Dispersion, standard deviation, and coefficient of variation of QTaF interval during the Bruce test.…”

Section: Discussionmentioning

confidence: 99%

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Exercise-induced ventricular re-polarisation changes in moderate congenital aortic valve stenosis

et al. 2015

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Prognostic value of QTc interval dispersion changes during exercise testing in hypertensive men

et al. 2008

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The increase of QTc interval dispersion is common in men with positive ET for myocardial ischemia and there is a correlation between QTc dispersion and amount of ST segment depression. The increase of QTc interval dispersion during negative ET in patients with left ventricular hypertrophy has no significant predictive value for adverse cardiovascular events, as shown in our five-year follow-up study, but it requires confirmation by investigation of larger groups of patients.

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Change with exercise in QT dispersion in infarct-related myocardium after angioplasty

Cited by 3 publications

References 22 publications

Ventricular Repolarisation During Exercise Challenge Occurring Late After Kawasaki Disease

Ventricular Repolarisation During Exercise Challenge Occurring Late After Kawasaki Disease

Exercise-induced ventricular re-polarisation changes in moderate congenital aortic valve stenosis

Prognostic value of QTc interval dispersion changes during exercise testing in hypertensive men

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