how many hours have passed since the first time that patient 97330 stayed during their current hospital encounter in the careunit sicu?
select 24 * ( strftime('%j',current_time) - strftime('%j',transfers.intime) ) from transfers where transfers.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 97330 and admissions.dischtime is null ) and transfers.careunit = 'sicu' order by transfers.intime asc limit 1