Swinging T Waves
Report:
Sinus rhythm.
Incomplete RBBB.
Respiratory phasic reversal of T wave polarity.
Comment:
In the right precordial leads, respiratory movement has at times striking effect on the T wave and, less often, the QRS complex itself. This may of clinical importance when only a few cycles are sampled in a routine 12-lead ECG. It does happen: see Case 212.
The phenomenon is common and should be well known to ECG technicians. It appears less well known to the editors of the Chest, who actually published a report on âan unusual cause of electrical alternansâ200. Alternans! Before long the language will have no specificity.
267. The top strip looked funny and the nurse changed the lead (middle strip). Then the Intensivist came and made it look even funnier. How?
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