until 35 months ago has patient 22295's sao2 been normal?
select count(*)>0 from chartevents where chartevents.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 22295 ) ) and chartevents.itemid in ( select d_items.itemid from d_items where d_items.label = 'sao2' and d_items.linksto = 'chartevents' ) and chartevents.valuenum between sao2_lower and sao2_upper and datetime(chartevents.charttime) <= datetime(current_time,'-35 month')