Brief Summary:

The goal of this RCT is to compare the Safety and efficacy of remimazolam compared with propofol under EEG DSA guiding during cardiac electrophysiology studies and ablation. The main questions it aims to answer are:

• Is Remimazolam as efficacy as propofol in cardiac electrophysiology studies and ablation?
• Is Remimazolam lower hypotension episodes or lower vasopressor dosages compare with propofol in cardiac electrophysiology studies and ablation? If there is a comparison group: Researchers will compare [arm information] to see if [insert effects].

Researchers will compare Remimazolam to Propofol to see if Remimazolam is more feasible in cardiac electrophysiology studies and ablation.

Participants will receive either Remimazolam or Propofol sedation during study period.

Inclusion Criteria:

• Patient receives scheduled cardiac electrophysiology studies and ablation by the same cardiologist(one of the study investigator).

Exclusion Criteria:

• With existing vasopressor or shock status
• Patient refusal or cannot finish Mini-Cog or QoR-15 preoperatively
• Canceled by cardiologist
• Allergy history to the anesthetics used in this study
• History of abnormal lung function or required oxygen therapy preoperative