This is a patient undergoing a diagnostic home sleep study prior to undergoing gastric banding surgery. She has a BMI of 44 kg/m2. She stops breathing up to 80 seconds, 63 times per hour and her blood oxygen levels drop to 51% from wake levels of 95%. She was suffering from excessive daytime tiredness.

http://www.youtube.com/watch?v=a8F3zPjh6QA

Severe obstructive sleep apnoea. This patient stopped breathing 122 times per hour of sleep. His heart stopped beating twice for 10 seconds at a time during an apnoea. This video shows one of those occasions.

http://www.youtube.com/watch?v=UwjeVRdy5u4

How CPAP machines can Help!
Continuous Positive Airway Pressure,  a simple machine that can save your life.

http://www.youtube.com/watch?v=6QcmK24ZNyQ