{"id":"definity-infusion","safety":{"commonSideEffects":[{"rate":null,"effect":"Headache"},{"rate":null,"effect":"Nausea"},{"rate":null,"effect":"Chest pain or discomfort"},{"rate":null,"effect":"Flushing"},{"rate":null,"effect":"Dyspnea"}]},"_chembl":null,"_dailymed":null,"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"Definity microbubbles are injected intravenously and circulate through the heart chambers, where they reflect ultrasound waves more effectively than blood alone, improving visualization of cardiac structures and function. 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