Does thiopental affect bispectral index and heart rate variability during induction of anaesthesia?
Thiopental reduces cardiac parasympathetic tone depending on the depth of hypnosis during anaesthesia induction.
Induction of anaesthesia with thiopental increased heart rate and decreased high frequency, entropy and low frequency in a BIS-dependent manner, indicating that thiopental reduces cardiac parasympathetic tone depending on the depth of hypnosis.
Tsuchiya et al. (Wed,) studied this question.
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