Ischaemic Stroke and Sleep Apnea in Northern Part of Finland

In prospective study the investigators include all over 18 years old patients who came to emergency room for ischaemic stroke. Exclusion criteria is not able to co-operate or need for intensive care unit.The investigators shall take 100 control patients who have ischaemic stroke and no thrombolysis and 100 study patients who will have thrombolysis. The investigators do sleep registration during hospital staying within 2 days after patients have felt ill.Follow-up registration will be done after 6 months at home.