Which of the following statements concerning Q waves on the ECG is most accurate?
A) Q waves are not a normal finding on the ECG.
B) The absence of a Q wave is a significant pathophysiological finding.
C) A Q wave is significant if it is 0.04 or more seconds wide.
D) A Q wave is only significant in the presence of chest pain.

Question

Quizplus · Accepted Answer

Q waves are not necessarily abnormal findings on the ECG, as they can be a normal variant in some leads. The absence of a Q wave is not necessarily significant. However, a Q wave is considered significant if it is 0.04 seconds or more in duration, as this may indicate myocardial infarction or other pathological conditions. The presence or absence of chest pain is not directly related to the significance of Q waves on the ECG.

Which of the Following Statements Concerning Q Waves on the ECG