how many hours has it been since patient 52898 was first diagnosed with delirium d/t other cond in the in their current hospital visit?
select 24 * ( strftime('%j',current_time) - strftime('%j',diagnoses_icd.charttime) ) from diagnoses_icd where diagnoses_icd.icd9_code = ( select d_icd_diagnoses.icd9_code from d_icd_diagnoses where d_icd_diagnoses.short_title = 'delirium d/t other cond' ) and diagnoses_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 52898 and admissions.dischtime is null ) order by diagnoses_icd.charttime asc limit 1