Question

In the detection of the waveform of ECG signal, a wave is considered as a T wave if _______

(a) It occurs within a 120 ms interval

(b) Its peak occurred within 1/6th the R-R interval

(c) It occurs within a 200 ms interval

(d) Its peak occurred within 1/3rd the R wave height

This question was posed to me in homework.

The question is from Central Monitors in section Patient Monitoring System of Biomedical Instrumentation

Answer 1

Right answer is (c) It occurs within a 200 ms interval

Explanation: AT wave following a QRS is also searched. A wave is considered as a T wave if (i) it occurs within a 200 ms interval, (ii) its peak occurred within 1/3rd the R–R interval +80 ms or within 240 ms whichever is greater, following the preceding R wave, and (iii) its height is half the height of a normal R wave.