instruction: How many of the patients having cardiac catheterization as the cause of abnormal reaction of patient, or of later complication, without specifying misadventure at time of procedure, received additive therapy?
response: SELECT COUNT(DISTINCT demographic.subject_id) FROM demographic INNER JOIN diagnoses ON demographic.hadm_id = diagnoses.hadm_id INNER JOIN prescriptions ON demographic.hadm_id = prescriptions.hadm_id WHERE diagnoses.long_title = "Cardiac catheterization as the cause of abnormal reaction of patient, or of later complication, without mention of misadventure at time of procedure" AND prescriptions.drug_type = "ADDITIVE"