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Ann Allergy Asthma Immunol. 1996 Feb;76(2):175-80.

Rush immunotherapy: experience with a one-day schedule.

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Section of Allergy/Asthma/Immunology, The Children's Mercy Hospital, Kansas City, Missouri, USA.



Rush immunotherapy is a method for rapidly desensitizing patients to inhalant allergens. The frequency of systemic reactions during rush immunotherapy is similar to conventional immunotherapy when premedication is used. The most rapid protocol for rush immunotherapy reported to date requires one and one-half days which is inconvenient to patients and clinic schedules. To improve this situation and decrease the cost of giving rush immunotherapy, we have developed a 1-day protocol.


for this ongoing study, 22 allergic patients received rush immunotherapy consisting of eight injections over six hours followed by two hours of observation in an outpatient clinic. Five had rhinitis and the rest has asthma, seven of whom were steroid-dependent. All were premedicated with astemizole, ranitidine, and prednisone for three days including the day of rush immunotherapy, and peak expiratory low rates were monitored.


Systemic reactions were seen in five of 22 (23%). They occurred following the sixth injection (1), seventh injection (2), or the final one (2) and consisted primarily of rhinitis or pulmonary symptoms with one episode of mild anaphylaxis. A systemic reaction was seen in only one steroid-dependent asthmatic patient. A local reaction preceded a systemic reaction in only one patient. All but three reached a maintenance dose in one day. All systemic reactions responded to epinephrine and all patients could go home after rush immunotherapy. Only one patient had a systemic reaction during the three months after rush immunotherapy.


One day rush immunotherapy is tolerated by most patients with a systemic reaction rate comparable to conventional immunotherapy. All patients were able to reach a maintenance dose months sooner than weekly schedules. With refinement of this procedure, rush immunotherapy may become a widely used method for desensitizing patients with inhalant allergens, and could make immunotherapy less expensive and more convenient.

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