Hey girl! I also suffer from palpitations (also anxiety induced) and I take propanolol to slow down my heart beat in stressful situations! Fast heartbeat can increase your blood pressure which adds risk to being put under general anaesthesia so as annoying as it is just think of it as something that it’s better to be safe about!🖤 Also propanolol doesn’t interact with general anaesthesia at all so it’s perfectly safe to take it to help you with the rapid heartbeat (and overall stress by the sounds of it!). Good luck girl 🖤