Negative T & U Waves

Report:

Sinus rhythm 78/min

Diffuse nonspecific ST/T changes

Prominent U waves ?hypokalæmia

Comment:

U wave polarity follows that of the preceding T wave, except in ischæmia, where isolated U negativity may be a marker of critical LAD artery lesions. In this instance, both T and U wave are negative, for unknown reasons. The QT interval is difficult to measure, but appears prolonged. The recorded potassium levels ranged between 2.6 and 3.0 mEq/L, possibly accounting for the prominence of the U waves, but little else.

A repeat recording the same day remained unchanged (16a).

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