Snoring usually doesn’t cause any significant medical problems. However, in some cases, snoring can indicate a more serious medical condition called obstructive sleep apnoea. Obstructive sleep apnoea can cause interruptions to your breathing many times during the night. These episodes can last from 10 seconds to two minutes. Clinically, a person is considered to have sleep apnoea if there are more than 5 partial or complete obstructions per hour of sleep. The first step in determining if you or your partner may have sleep apnoea, is to go to your local GP to get a referral for a respiratory sleep-disorder physician.