If you don't have SCT or don't know how to set up a specific event, try out Event Alert. It has been updated recently to include Bloodsurge proc. With Event Alert, you can set up an audio and visual alert to notify you when Bloodsurge is up. You can customize it to one of several sounds and can move the icon wherever you like on the screen. I tried it last night and it works great. I did away with the icon pop-up as the sound notification I assigned to it was plenty enough to remind me to hit the key. Simple and effective. Link below:
http://wow.curse.com/downloads/wow-addons/details/event-alert.aspx