Question

question 8 of 20
what is the length of a qt interval?
≤0.30 sec (≤300 ms)
0.20 - 0.26 sec (200 - 260 ms)
≤0.44 sec (≤440 ms)
≤0.55 sec (≤550 ms)

Explanation:

The normal QT - interval is generally ≤ 0.44 seconds (≤ 440 ms) in adults. This is a standard value in electrocardiogram (ECG) interpretation related to heart electrical activity.

Answer:

C. ≤ 0.44 sec (≤ 440 ms)