Toxic reactions to epinephrine occur most often after the placement of a gingival retraction cord.The treatment of choice is to administer an adrenergic-receptor antagonist.

Question

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Becoming panicky will cause the patient to release endogenous epinephrine,and the reaction will continue.The treatment of choice is to remove the retraction cord and reassure the patient.In a calm patient,the epinephrine will be metabolized,and the episode will not precipitate the release of endogenous epinephrine.

Toxic Reactions to Epinephrine Occur Most Often After the Placement