when was the last time that patient 43735 was diagnosed with a status-post ptca until 1 year ago?
select 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 = 'status-post ptca' ) and diagnoses_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 43735 ) and datetime(diagnoses_icd.charttime) <= datetime(current_time,'-1 year') order by diagnoses_icd.charttime desc limit 1