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To the editor: In the excellent review of hypothermia in the October issue (Ann Intern Med 89:519–527, 1978), Dr. Reuler states that “arterial blood gases must be corrected for body temperature” and that “because these values are standardly measured at 37 °C, direct communication to the laboratory is necessary in order to obtain results that can be rationally interpreted and applied to management.” Does Dr. Reuler intend that the laboratory measure the sample at the patient's core temperature, or simply to supply an arbitrary correction retrievable from the literature? The first possibility presents an enormous logistical problem in a busy

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