The goal of this observational study is to learn if the spontaneous sedation regimen of dexmedetomidine-ketamine (KETADEX) has the comparable efficacy and safety in pediatric cardiac catheterization versus the traditional regimen. The main question it aims to answer is: Is the combined Dexmedetomidine-Ketamine spontaneous sedation regimen (KETADEX) non-inferior to the traditional general anesthesia regimen in terms of efficacy and safety? Participants would received either KETADEX regimen or general anesthesia regimen. Research members then observe the catheterization procedure and answer the questionnaire about their efficacy and safety.
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The rate of achieving Ramsay Sedation Scale score 6 without the need for rescue anesthesia and the occurrence of any adverse events throughout the duration of the cardiac catheterization procedure.
Timeframe: Perioperative/periprocedural