Obviously I’m not your cardiologist and I don’t know the specifics. The two significant class of medications that slow are heart rate are beta blockers and calcium channel blockers. Neither of the prescribed medications you mentioned are classified as such.
Multaq isn’t a beta blocker but rather classified as an antiarrhythmics. While it does slow the heart rate in most individuals only by a few milliseconds, not enough to affect the algorithm.
Ranolozine is not a beta blocker either. It does not reduce heart rate.
Just as an example, I take Amlodipine, a calcium channel blocker and Metoprolol, a beta blocker. Combined, they reduce my heart rate about 20 BPM. I have a very hard time getting my heart rate above 110 BPM. My VO2 max when from around 41 (untreated) to about 27 when treated. Most individuals are extremely alarmed by this, but it’s to be expected when the individual is treated and in compliance.
Your medications are oriented towards establishing and maintaining a regular heart rhythm. Beta blockers and calcium channel blockers are typically used for individuals that are diagnosed with high blood pressure. They can reduce the heart rate 10 to 20 beats per minute. Your medications are attempting to pace your heart beats, not reduce the number of beats.
Your cardiologist may be prescribing the medications for atypical reasons. Apple Watch is a product designed for the average person and its algorithms look to standard prescribed medications and their standard uses.
