I remember when I had just been diagnosed with ventricular tachycardia, my cardiologist expressed concern when I mentioned upcoming dental implant surgery. It would involve bone grafting and the dental surgeon recommended anaesthesia. The cardiologist wanted to know if an anaesthesist would be doing it. (No). In the end, I did not go ahead.
Then, about a year and a half ago, the private clinic that does scoping (gastroscopy) (in Canada) did not want me to do the procedure there (used propofol). Quite frankly, I felt safer having the gastroscopy done in a hospital setting. I get nervous before procedures and my heart rate went up and my blood pressure soared to 190 (cant remember over what). The nurses kept monitoring me and eventually I was wheeled in, given sedation (b.p. went down). You have to be careful with anaesthetic when dealing with ventricular tachycardia. Also, when at the dentist's office, there is one type of local freezing that makes your heart really race. On my chart, it days do not use.