Which of the following ECG changes is one of the earliest to occur during an ST elevation infarction, but may have resolved by the time the patient seeks medical assistance?
A) Pathologic Q waves
B) Hyperacute T waves
C) Horizontal ST segments
D) Lengthening of the QT interval

Question

Quizplus · Accepted Answer

Hyperacute (i.e., tall) T waves are sometimes called tombstone T waves and typically measure more than 50% of the preceding R wave. In addition to an increase in height, the T wave becomes more symmetric and may become pointed. These changes are often not recorded on the ECG because they have typically resolved by the time the patient seeks medical assistance.

Which of the Following ECG Changes Is One of the Earliest