Inclusion Criteria1. Patients over the age of 18.
2. Admitted to the Neurology Department due to acute ischemic stroke.
3. Able to sign informed consent.
4. Admission NIHSS 6-12.
Exclusion Criteria1. Stroke symptom onset more than 72 hours prior to the enrollment
2. Transient Ischemic Attack.
3. Chronic pulmonary disease requiring home oxygen treatment.
4. History of C-PAP treatment