anaphylaxis

(redirected from Anaphylactoid reactions)
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an·a·phy·lax·is

 (ăn′ə-fə-lăk′sĭs)
n.
A sudden, usually systemic allergic reaction, characterized by vasodilation resulting in decreased blood pressure, smooth muscle contraction resulting in shortness of breath, and hives, caused by hypersensitivity induced by a secondary exposure to a foreign substance, such as a drug or protein, after an initial sensitizing exposure.


an′a·phy·lac′tic (-lăk′tĭk), an′a·phy·lac′toid (-toid) adj.
an′a·phy·lac′ti·cal·ly adv.

anaphylaxis

(ˌænəfɪˈlæksɪs) or

anaphylaxy

n
(Medicine) extreme sensitivity to an injected antigen, esp a protein, following a previous injection
[C20: from ana- + (pro)phylaxis]
ˌanaphyˈlactic, ˌanaphyˈlactoid adj
ˌanaphyˈlactically adv

an•a•phy•lax•is

(ˌæn ə fəˈlæk sɪs)

n.
a hypersensitive reaction to an allergen, as a severe bout of hay fever, the rapid appearance of wheals, or profound physiological changes and shock.
[1905–10; ana- + (pro) phylaxis]

anaphylaxis

extreme sensitivity to an antigen, causing secretion of histamine and attendant adverse reactions, sometimes fatal. — anaphylactic, adj.
See also: Disease and Illness
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.anaphylaxis - hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance
drug - a substance that is used as a medicine or narcotic
anaphylactic shock - a severe and rapid and sometimes fatal hypersensitivity reaction to a substance (especially a vaccine or penicillin or shellfish or insect venom) to which the organism has become sensitized by previous exposure
hypersensitivity reaction - an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock
Translations

an·a·phy·lax·is

n. anafilaxis, hipersensibilidad, reacción alérgica extrema.

anaphylaxis

n anafilaxia, anafilaxis f
References in periodicals archive ?
Acetadote is contraindicated in patients with hypersensitivity or previous anaphylactoid reactions to acetylcysteine or any components of the preparation.
Acute coronary syndrome accompanying mast cell activation from allergic, hypersensitivity, or anaphylactoid reactions was first described by Kounis and Zavras in 1991 and has been referred to as "allergic angina" or "allergic myocardial infarction" (1, 2).
Symptoms such as urticaria and anaphylactoid reactions do not stem from true allergic reactions as one would expect after ingesting food or other immune-system-provoking substance.
Severe anaphylactoid reactions have been reported in four women receiving intravenous or oral ranitidine during labor (Br.
The 10 other birds likely died of cardiopulmonary collapse and anaphylactoid reactions.
Barth et al (93) injected 100 mg of tramadol intravenously (a single dose often administered) into 13 healthy volunteers and looked for histamine release, systemic or cutaneous anaphylactoid reactions and changes in blood pressure, heart rate and electrocardiogram variables.
The concurrence of ACS with conditions associated with allergic or hypersensitivity and anaphylactic or anaphylactoid reactions constitutes the Kounis syndrome (1).
Anaphylactoid reactions to cancer agents are often related to cytokine release secondary to the administration of monoclonal antibodies.
3) The authors suggested that the use of naloxone may be beneficial in management of opioid-induced anaphylactoid reactions.
The new report will carry information on cases that assert a range of injuries, including stomach ulcers, infections, cancer, blood clots, kidney and liver damage, anaphylactoid reactions, heart attacks and strokes.
Ciprofloxacin as a chemoprophylactic agent for meningococcal disease -- low risk of anaphylactoid reactions.
41) Before Zomax was taken FDA also failed to analyze data it had that strongly intimated that Zomax was associated with a higher incidence of anaphylactoid reactions than other drugs in its class.