The American Sleep Apnea Association recommends placing tennis balls in a tube sock and pinning them to your nightclothes to break the habit of sleeping on your back, which can cause your airway to close down, a symptom of sleep apnea.
However, children and infants are at increased risk of choking and foreign body airway obstruction due to immature airway and dental anatomy, distraction and play during eating, and a natural tendency to put objects into their mouths.
The inlet opening of the pressure fan is in free communication with the outside air, the discharge connecting with the mine air-way; in the more generally used exhaust fan the inlet is connected with the airway, the fan discharging into the atmosphere.
Both vascular and airway smooth muscles relax in response to beta adrenergic agonists via cyclic AMP.
Take care not to grip below the tip of the jawbone which would obstruct the airway.