Why the study?
Does isoflurane anaesthesia alter the R/T-wave amplitude ratio of ECG in surgical patients?
Population
15 patients undergoing surgery
Comparison
Isoflurane anaesthesia vs Awake state (baseline)
Design
Cohort
Follow-up
During surgery
Authors
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Isoflurane induction and incision were associated with reduced T-wave amplitude; leaves open whether R/T ratio reliably monitors sympathetic tone.
Does isoflurane anaesthesia alter the R/T-wave amplitude ratio of ECG in surgical patients?
The R/T-wave amplitude ratio of ECG provides a reliable method for monitoring sympathetic tone during isoflurane anaesthesia.
Annila et al. (1993) studied this question.
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