Which finding is characteristic of the first phase of salicylate toxicity?

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Multiple Choice

Which finding is characteristic of the first phase of salicylate toxicity?

Explanation:
The first phase is driven by stimulation of the respiratory center, which causes increased ventilation. This hyperventilation lowers arterial CO2 and leads to a respiratory alkalosis—the hallmark of early salicylate toxicity. Vomiting and diaphoresis can occur but are not defining features of this initial phase, and tinnitus tends to appear as levels rise and toxicity progresses to later stages.

The first phase is driven by stimulation of the respiratory center, which causes increased ventilation. This hyperventilation lowers arterial CO2 and leads to a respiratory alkalosis—the hallmark of early salicylate toxicity. Vomiting and diaphoresis can occur but are not defining features of this initial phase, and tinnitus tends to appear as levels rise and toxicity progresses to later stages.

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