The Effect of the LEFT Smartwatch App as Sleep Positional Therapy for Nocturnal Gastroesophageal Reflux Symptoms.

The LEFT smartwatch app is an app on the Apple Watch which measures body sleep position and gently vibrates when the body is in the right lateral decubitus position. In this way, patients with nocturnal gastroesophageal reflux symptoms learn to avoid the right lateral sleep position as they will avoid the annoying vibrations. Measurements while using the smartwatch app will be compared to measurements at baseline.