Had to go to hospital today for a scan heart rate too high they told me .I am on beta blocker bisoprolol had not taken my tablet before I went to hospital but took it just before scan ten minutes before would that pill work in that time frame .this has happened twice in last two days .would I need other medication to lower heart rate .refering me to my heart specialist next month what should I do meantime .as not advised to do anything up till now .