What is a characteristic sign of local anesthesia overdose?

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Multiple Choice

What is a characteristic sign of local anesthesia overdose?

Local anesthetic overdose typically shows a biphasic pattern: the patient first experiences CNS excitation (such as anxiety, tremors, paresthesias, or restlessness) followed by CNS and cardiovascular depression (seizures, coma, respiratory depression, hypotension, bradycardia). This excitation-then-depression sequence is characteristic of LAST and helps distinguish it from other adverse effects. Nausea or palpitations can occur but are nonspecific, and respiratory depression alone is not the initial hallmark. So, the biphasic response is the most distinctive feature of overdose.

Local anesthetic overdose typically shows a biphasic pattern: the patient first experiences CNS excitation (such as anxiety, tremors, paresthesias, or restlessness) followed by CNS and cardiovascular depression (seizures, coma, respiratory depression, hypotension, bradycardia). This excitation-then-depression sequence is characteristic of LAST and helps distinguish it from other adverse effects. Nausea or palpitations can occur but are nonspecific, and respiratory depression alone is not the initial hallmark. So, the biphasic response is the most distinctive feature of overdose.

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