@chuckiepoo1
I would have a loop recorder implanted so you and your doctors don’t have to guess if your light-headedness is being caused by bouts of NSVT or the now increased dosage of metoprolol.
In my experience, metoprolol caused dizziness and increased the likelihood of a fall as a result. It also made me very tired. I tried many different meds until I landed on a calcium channel blocker called Verapamil slow release capsules for the purpose of slowing my heart rate.
The Medtronic loop recorder I have is quite small and easily placed under the skin after the area is numbed by injection. Out patient procedure. Your every heartbeat can be monitored for any irregularities and your physicians can then make your care decisions based on hard facts.
Good luck.