*He fell getting out of a boat on a duck hunting trip. At first he declined treatment, but after returning home, his oxygen levels began to drop.
*Uncle Si is the 76-year-old fan-favorite on Duck Dynasty, an A&E show that ran until 2017.
*He's previously had lung surgery and health problems related to COPD and travels with a portable oxygen tank.
*A reboot called Duck Dynasty: The Revival is scheduled for this summer.
Read More: 'Duck Dynasty': Uncle Si Rushed to ER After Hunting Accident