The point at which the QRS complex and ST segment join together is called the
A)Q wave.
B)R-point.
C)S wave.
D)J-point.

Question

Quizplus · Accepted Answer

The J-point is the point at which the QRS complex ends and the ST segment begins. It is an important reference point for measuring the duration and magnitude of the ST segment on an electrocardiogram (ECG). The Q wave is the first negative deflection in the QRS complex, the R-point is the peak of the R wave in the QRS complex, and the S wave is the negative deflection following the R wave in the QRS complex. Therefore, the best choice for the point where the QRS complex and ST segment join together is the J-point.

The Point at Which the QRS Complex and ST Segment