Frequency of the index event on waking in patients with and without the combination of RLSh and LOSA
| Event (TIA or stroke) | LOSA plus RLSh | LOSA or RLSh or neither |
|---|---|---|
| While awake | 42 (61%) | 196 (74%) |
| At wake up | 27 (39%) | 70 (26%) |
| Total | 69 (100%) | 266 (100%) |
χ2=4.3736; p=0.036.
The frequency of wake-up stroke/TIA was higher in patients with RLSh plus LOSA than in those without this association.
LOSA, long obstructive sleep apnoea events lasting 20 s or more; RLSh, right to left shunt; TIA, transient ischaemic attack.