These lines are comprised of three main parts: In normal sinus rhythm, the P-P interval (the time between consecutive P waves) is the same throughout the ECG. Also, the heart rate (how fast the ...

Sinus rhythm refers to the origination of the electrical activity coming from the sinus node — also known as the sinoatrial node, or SA node. This results in an upright P wave in lead II on the ECG.

You are the house officer on call for the telemetry floor and a nurse calls you with an abnormal rhythm seen on telemetry ... Explanation: A "U wave" occurs just after the T wave and significantly ...

6,11–14 A junctional or nodal rhythm occurs when the QRS rate is faster than the resting P wave or sinus rate which is slowed in athletes due to increased vagal tone (figure 4). The QRS rate for ...