All sleep apnea patients snore, this is the benchmark of the disorder. Unfortunately unless the patient sleeps with a partner they may never known that they’re snoring. There are some clues that can tell a person whether or not they have been however. Waking up with a dry mouth, sore throat or sticky feeling teeth is a sign that the patient has been sleeping with their mouth open as will often happen when a person snores. This will also usually be accompanied by sounds of choking and gasps for air.