count the number of patients who have had a extracorporeal circulat procedure during the same hospital visit after having been diagnosed until 1 year ago with urin tract infection nos.
select count( distinct t1.subject_id ) from ( select admissions.subject_id, diagnoses_icd.charttime, admissions.hadm_id from diagnoses_icd join admissions on diagnoses_icd.hadm_id = admissions.hadm_id where diagnoses_icd.icd9_code = ( select d_icd_diagnoses.icd9_code from d_icd_diagnoses where d_icd_diagnoses.short_title = 'urin tract infection nos' ) and datetime(diagnoses_icd.charttime) <= datetime(current_time,'-1 year') ) as t1 join ( select admissions.subject_id, procedures_icd.charttime, admissions.hadm_id from procedures_icd join admissions on procedures_icd.hadm_id = admissions.hadm_id where procedures_icd.icd9_code = ( select d_icd_procedures.icd9_code from d_icd_procedures where d_icd_procedures.short_title = 'extracorporeal circulat' ) and datetime(procedures_icd.charttime) <= datetime(current_time,'-1 year') ) as t2 on t1.subject_id = t2.subject_id where t1.charttime < t2.charttime and t1.hadm_id = t2.hadm_id