Re: Cardiac rhythms on cardiac monitor by Karel Ann Espejo - Sunday, 5 December 2021, 11:42 AM Number of replies: 0 Hi, Anna! In high heart rates, >150bpm, look for the P waves. In SVT, the P waves are absent or unidentifiable. In sinus tachycardia, you may still discern the P wave even if it can be quite close to the T wave. 42 words Permalink Show parent