how many hours has it been since the last time patient 17462 visited ward 14 in this hospital visit?
select 24 * ( strftime('%j',current_time) - strftime('%j',transfers.intime) ) from transfers where transfers.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 17462 and admissions.dischtime is null ) ) and transfers.wardid = 14 order by transfers.intime desc limit 1