when had patient 2498 when they came to the hospital last time for the first time received rt/left heart card cath?
select procedures_icd.charttime from procedures_icd where procedures_icd.icd9_code = ( select d_icd_procedures.icd9_code from d_icd_procedures where d_icd_procedures.short_title = 'rt/left heart card cath' ) and procedures_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 2498 and admissions.dischtime is not null order by admissions.admittime desc limit 1 ) order by procedures_icd.charttime asc limit 1