Question: are ahi and rdi the same?
Answer: The AHI is defined as the average number of episodes of apnea and hypopnea per hour. The RDI is defined as the average number of respiratory disturbances (obstructive apneas, hypopneas, and respiratory event–related arousals [RERAs]) per hour. ... AHI or RDI greater than or equal to 15 events per hour, or.