Regional anesthesia
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Regional anesthesia · May 1994
Comment Clinical Trial Controlled Clinical TrialEvaluation of brachial plexus anesthesia for upper extremity surgery.
Brachial plexus anesthesia is the preferred anesthetic at the authors' institution for upper extremity surgery. The article is a prospective observational evaluation of brachial plexus anesthesia for surgical success of the block and immediate and postoperative complications. ⋯ Both interscalene and axillary blocks are safe and effective techniques for upper extremity surgery.
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Regional anesthesia · May 1994
Clinical TrialAnalysis of heart rate dynamics as a measure of autonomic tone in obstetrical patients undergoing epidural or spinal anesthesia.
The purpose of this study is to determine if spectral analysis of beat-to-beat heart rate variability will provide important data on autonomic nervous system function during either spinal or epidural anesthesia that is not apparent from the monitoring of mean heart rate and blood pressure. ⋯ These data suggest that autonomic tone decreased with spinal and epidural anesthesia but the sympathetic-parasympathetic balance (expressed as PLF/PHF) did not change. Spectral measures, as well as approximate entropy, provide an independent evaluation of the integrity of the autonomic nervous system and cardiovascular control mechanisms that cannot be discerned from mean heart rate and blood pressure.
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Regional anesthesia · May 1994
Comment Letter Clinical TrialThoracic paravertebral block in chronic postoperative pain.