PMID: 9533372Apr 9, 1998Paper

Does increased QT dispersion in the acute phase of anterior myocardial infarction predict recovery of left ventricular wall motion?

Journal of Electrocardiology
T NakajimaK Dohi

Abstract

QT dispersion has been recognized as an undesirable marker because of its association with arrhythmogenicity in patients with myocardial infarction, but the relation between QT interval dispersion and wall motion abnormalities has not been clarified. After the introduction of reperfusion therapy, it was recognized that T waves were inverted twice in the course of myocardial infarction. An investigation was made of the clinical significance of QT dispersion in relation to the presence of inverted T waves and left ventricular wall motion abnormalities in 34 patients (mean age, 59 years) with acute anterior myocardial infarction who underwent successful reperfusion therapy. The amplitude of the deepest inverted T waves occurring within the first 3 days (T1) and after 3 days (T2) of myocardial infarction were measured in electrocardiographic (ECG) lead V3. On the ECGs on which T1 and T2 were recorded, QT dispersion was calculated (QTd1, QTd2), and T1 and T2 were correlated with QTd1 (r = .65) and QTd2 (r = .47), respectively. The difference between the extent of asynergy in the acute phase and the chronic phase, which was evaluated by the centerline method, was correlated with T1 (r = .63) and QTd1 (r = .67). Patients with a QTd1 o...Continue Reading

References

Sep 1, 1991·Japanese Circulation Journal·T SoneH Sassa
Jan 1, 1988·The American Journal of Cardiology·J C CowanR W Campbell
Jan 1, 1995·British Heart Journal·P D HighamR W Campbell
Sep 1, 1952·Circulation·E LEPESCHKIN, B SURAWICZ

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Citations

Nov 25, 2000·Journal of the American College of Cardiology·M Malik, V N Batchvarov
Dec 26, 2003·Circulation Journal : Official Journal of the Japanese Circulation Society·Satoshi KurisuHikaru Sato
Oct 17, 2009·Internal Medicine·Elsayed Z SolimanMohamed D Dardir

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