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Abbreviations: DBP, diastolic blood pressure; Group EM, Etomidate-Midazolam group; Group PK, Propofol-Ketamine group; SBP, systolic blood pressure; T0, before induction of anesthesia (baseline); T1, one minute after induction; T2, 1 minutes after intubation; T3, three minutes after intubation; and T4, five minutes after intubation.
