instruction: number the number of times patient 017-16041 had been given vascular 3 flush amount (ml) since 04/15/2103.
response: SELECT COUNT(*) FROM intakeoutput WHERE intakeoutput.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '017-16041')) AND intakeoutput.cellpath LIKE '%intake%' AND intakeoutput.celllabel = 'vascular 3 flush amount (ml)' AND STRFTIME('%y-%m-%d', intakeoutput.intakeoutputtime) >= '2103-04-15'