Table 1

Sleep parameters

Total sleep time (min)Apnoea/hypopnoea index (AHI) (apnoeas + hypopnoeas/h sleep)*Apnoea duration (s)Baseline Sao2 (%)†Mean low Sao2 (%)‡
CentralMixedObstructed
*Non-REM sleep.
†Initial baseline value only.
‡Minimum Sao2 in the absence of apnoea.
Study 1: baseline2283415530 (9)98 (1.6)93 (1.8)
Study 2: breathing O2157815734 (9)98 (1.0)96 (1.9)
Study 3: after mitral valvuloplasty27300096