U Wave: Facts, Hypotheses, Misconceptions, and Misnomers

Journal of Cardiovascular Electrophysiology - Tập 9 Số 10 - Trang 1117-1128 - 1998
Borys Surawicz1
1Krannert Institute of Cardiology, Indiana University School of Medicine, Indianapolis, USA

Tóm tắt

U Wave. The clinical significance of U wave is limited to the occasional obfuscation of the end of T wave and an inadequately explained U wave inversion associated with myocardial ischemia, infarction, and ventricular hypertrophy and dilatation. Lengthening of QT interval often interferes with the recognition of U wave. The characteristics of U wave are not compatible with the Purkinje or ventricular muscle repolarization hypotheses. The timing of the U wave during ventricular relaxation and the links between U wave and mechanical events favor the mechanoelectrical hypothesis of U wave genesis. Unfortunately, little research has been done to test this hypothesis.

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Tài liệu tham khảo

Einthoven W, 1903, Die galvanometrischc Registrierung des menschlichen Elektrokardiogram, zugleich eine Beurteilung der Anwendung des Capillar-Elektrometers in der Physiologic Pflügers Arch, 99, 472

10.1001/archinte.1955.00250160042004

Lepeschkin E, 1972, Advances in Electrocardiography, 431

10.1016/0002-8703(53)90237-3

10.1016/0002-9149(82)90225-9

Surawicz B, 1995, Electrophysiologic Basis of ECG and Cardiac Arrtiythmias, 599

10.1016/S0022-0736(73)80035-4

Ferrero C, 1970, Bloc de branche droite: Diagnostic de l'hypertrophie ventriculaire droite par la chronologie de l'onde U, Schweiz Med Wochenschr, 100, 190

10.1161/01.CIR.14.6.1129

10.1016/0735-1097(94)90529-0

Antzelevitch C, 1996, Role of M cells in acquired long QT syndrome, U waves, and torsade de pointes, J Electrocardiol, 28, 131, 10.1016/S0022-0736(95)80038-7

10.1016/0735-1097(95)00169-Z

10.1016/0735-1097(95)00167-X

10.1161/01.CIR.94.8.1981

10.1109/CIC.1992.269451

10.1111/j.1540-8167.1996.tb00557.x

Yan‐X G, Cellular basis for the normal T wave and the electrocardiographic manifestations of the long QT syndrome, Circulation

10.1016/0735-1097(92)90112-Z

10.1016/0002-9149(80)90058-2

10.1016/0735-1097(90)92831-L

10.1161/01.RES.42.4.519

10.1016/0033-0620(91)90017-G

10.1172/JCI112177

10.1159/000165471

10.1016/S0008-6363(96)00089-2

10.1007/BF01121637

10.1085/jgp.100.6.1021

10.1536/ihj.22.59

10.1016/0735-1097(91)90543-I

10.1136/hrt.55.5.428

10.1016/S0735-1097(96)00382-8

10.1159/isbn.978-3-318-00162-4

10.1161/01.CIR.8.6.801

10.1161/01.CIR.89.4.1681

Lepeschkin E, 1953, The measurement of the QT interval of the electrocardiogram, Circulation, 4, 378