How should patients with biphasic or persistent anaphylaxis be monitored following treatment?

Updated: May 16, 2018
  • Author: S Shahzad Mustafa, MD; Chief Editor: Michael A Kaliner, MD  more...
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Neither biphasic nor persistent anaphylaxis can be predicted from the severity of the initial phase of an anaphylactic reaction. Since life-threatening manifestations of anaphylaxis may recur, it may be necessary to monitor patients 24 hours or more after apparent recovery from the initial phase. [26] When prescribing epinephrine, all patients should be instructed to have 2 injectors on hand at all times.

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