Arteries carry life outward from the heart, so they stand for drive and the flow of energy into the world. Blocked ones are read as feeling cut off from your own vitality.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.