[{"arm_notes": "nan", "treatment_id": null, "treatment_name": "Placebo Control", "treatment_type": "Other", "pharmacological_treatment": "Placebo"}, {"arm_notes": "nan", "treatment_id": 1093, "treatment_name": "Regadenoson", "treatment_type": "Cardiovascular agents", "pharmacological_treatment": "Pharmacological treatment"}]

[{"arm_notes": "", "treatment_id": 2187, "treatment_name": "Placebo", "treatment_type": "Placebo", "pharmacological_treatment": "Placebo"}, {"arm_notes": "", "treatment_id": 1093, "treatment_name": "Regadenoson", "treatment_type": "Cardiovascular agents", "pharmacological_treatment": "Pharmacological treatment"}]