NRS 410 Topic 4 DQ 2: recognising anaphylactic shock
Discuss the symptoms associated with anaphylactic shock, how the nurse differentiates them from other conditions, and the steps that should be taken if anaphylactic shock is suspected.
Editorial process
Last reviewed · August 14, 2026
A multi-system diagnosis made at the bedside
Anaphylaxis is a clinical diagnosis made on pattern rather than on a test, so organise the symptoms by system and make the multi-system nature the point. Skin and mucosa in the great majority: urticaria, flushing, angio-oedema, itching. Respiratory: throat tightness, stridor, hoarseness, wheeze, dyspnoea, hypoxia. Cardiovascular: tachycardia, hypotension, syncope, and in a severe case circulatory collapse. Gastrointestinal: cramping abdominal pain, vomiting, diarrhoea. Plus the symptom students routinely omit and patients reliably report — a sense of impending doom. Say what makes it recognisable: rapid onset, usually within minutes to two hours of an exposure, and involvement of two or more systems, or hypotension alone after a known allergen. Emphasise that around one in ten cases has no skin involvement at all, and waiting for a rash to appear before acting is a documented cause of delayed treatment and of the deaths that follow it. Recognition here is a pattern, not a checklist.
The differentiation question then wants the conditions anaphylaxis is mistaken for and the feature that separates each. A vasovagal episode gives bradycardia, pallor and no urticaria or bronchospasm, where anaphylaxis gives tachycardia and flushing. Acute asthma gives wheeze without urticaria, hypotension or gastrointestinal symptoms. A panic attack gives tachypnoea and a sense of doom but no hypoxia, no hypotension and no objective airway findings. Isolated urticaria involves one system only. Septic shock, hereditary angio-oedema and scombroid poisoning are worth a line each. Then the steps, in order and unhedged: remove the trigger, call for help, give intramuscular adrenaline into the anterolateral thigh immediately, position the patient supine with legs raised unless they cannot breathe, give high-flow oxygen and intravenous fluids, repeat adrenaline at five to fifteen minutes if needed, and observe for biphasic reaction. Antihistamines and steroids are adjuncts and never a substitute for adrenaline.
Likely learning objectives
Inferred from the brief — check these against your own rubric.
- 01Describe the multi-system presentation of anaphylaxis.
- 02Apply the diagnostic pattern that makes it recognisable at the bedside.
- 03Differentiate anaphylaxis from the conditions it imitates.
- 04Sequence the emergency response, with adrenaline first.
Read the full question
Review every instruction before using the planning guidance that follows.
Turn the brief into deliverables
- 01The symptoms associated with anaphylactic shock, by system.
- 02The pattern — rapid onset and multi-system involvement — that identifies it.
- 03How the nurse differentiates it from other conditions or issues.
- 04The steps to take if anaphylactic shock is suspected.
- 05The route, site and repetition interval for adrenaline.
- 06APA citations and references.
Symptoms, differentials, then the sequence
What anaphylaxis is
A rapid, systemic, IgE-mediated reaction diagnosed clinically.
Symptoms by system
Skin, respiratory, cardiovascular, gastrointestinal, and impending doom.
The recognition pattern
Onset within minutes to hours; two systems, or hypotension after exposure.
What it is mistaken for
Vasovagal, asthma, panic, isolated urticaria, sepsis, angio-oedema.
The immediate steps
Stop the trigger, call help, adrenaline IM, position, oxygen, fluids.
After stabilisation
Repeat dosing, observation for biphasic reaction, referral and an action plan.
The criteria and the dose
Recommended databases
- StatPearls, NCBI Bookshelf
- PubMed Central
- World Allergy Organization
- MedlinePlus
Search sequence
- 1.Read the anaphylaxis entry for the diagnostic criteria and the dosing.
- 2.Note the proportion of cases without cutaneous involvement.
- 3.Check the recommended adrenaline route, site and repeat interval.
- 4.Read on biphasic reactions and the recommended observation period.
- 5.List your differentials with a distinguishing feature before writing.
Reference shortlist
These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.
Nothing here is cleared for citation until you have read it.
- 01
Anaphylaxis
StatPearls, NCBI Bookshelf · 2023
Diagnostic criteria, adrenaline dosing and the biphasic reaction.
- 02
Hypovolemia and Hypovolemic Shock
StatPearls, NCBI Bookshelf, US National Library of Medicine · 2023
Distributive versus hypovolaemic shock, for the differential section.
- 03
Allergic Rhinitis
StatPearls, NCBI Bookshelf, US National Library of Medicine · 2023
The IgE mechanism at a milder point on the same spectrum.
- 04
High Blood Pressure | Hypertension
MedlinePlus, U.S. National Library of Medicine · 2024
Baseline blood pressure context for recognising a significant drop.
Review before submission
Common mistakes
- Requiring urticaria, which is absent in roughly one case in ten.
- Listing symptoms without the rapid-onset, multi-system pattern.
- Giving antihistamines or steroids as first-line treatment.
- Naming adrenaline without route, site or repeat interval.
- Omitting the differentials, which the prompt asks for explicitly.
- Forgetting the biphasic reaction and the observation period.
Submission checklist
- Symptoms are organised by system and include a sense of doom.
- The two-system or hypotension-after-allergen criterion is stated.
- At least three differentials are given with a distinguishing feature.
- Intramuscular adrenaline appears first in the sequence.
- Route, site and repeat interval are specified.
- Biphasic reaction and observation are addressed, with citations in APA format.
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Aaron Bishop
MA, Education
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Aaron leads the EssayCrackers editorial desk. He works on how assignment briefs are read — what a rubric is actually asking for, and where students most often answer a different question than the one set.
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