Anesthesiology
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Comment Letter
Interscalene brachial plexus blocks and phrenic nerve palsy.
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Multicenter Study Clinical Trial
Monitoring depth of anesthesia utilizing a combination of electroencephalographic and standard measures.
For decades, monitoring depth of anesthesia was mainly based on unspecific effects of anesthetics, for example, blood pressure, heart rate, or drug concentrations. Today, electroencephalogram-based monitors promise a more specific assessment of the brain function. To date, most approaches were focused on a "head-to-head" comparison of either electroencephalogram- or standard parameter-based monitoring. In the current study, a multimodal indicator based on a combination of both electro encephalographic and standard anesthesia monitoring parameters is defined for quantification of "anesthesia depth." ⋯ A multimodal integration of both standard monitoring and electroencephalographic parameters may more precisely reflect the level of anesthesia compared with monitoring based on one of these aspects alone.
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Much is still unknown about the actual incidence of anesthesia-related cardiac arrest in the United States. ⋯ As judged by an independent study commission, anesthesia-related cardiac arrest occurred in 37 of 160 cardiac arrests within the 24-h perioperative period.