To the Editor:-The article by Heller et al was informative and adds precision to the effect of temperature on the baricity of local anesthetics. They provide interesting new data on the temperature at which local anesthetics used for spinal anesthesia are isobaric (the "isobaric temperature"). Clearly, the next question is what is the clinical relevance of this added precision? The authors themselves state, "Whether this concept in fact improves patient safety in terms of hemodynamic stability or even allows dose reductions of local anesthetics must be confirmed in further clinical studies."
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