Question

A pathological Q wave indicating infarction should measure:

A) 0.004 second.
B) 0.12 second.
C) 0.32 second.
D) 0.04 second.

Answer 1

A pathological Q wave indicating infarction should measure 0.04 second. An enlarged or prolonged Q wave on an ECG can indicate damage to the heart muscle caused by a myocardial infarction (MI).

Step-by-step explanation:

A pathological Q wave indicating infarction should measure 0.04 second. On an electrocardiogram (ECG), the Q wave represents the depolarization of the ventricles. In cases of myocardial infarction (MI), the Q wave can become enlarged or prolonged, indicating damage to the heart muscle. An enlarged Q wave may suggest that part of the heart muscle has died due to lack of blood supply.