401210 Health Variations 3 – Acute Exacerbations of Chronic Conditions
Assessment 2: Concept Map and Guided Question Response
Weight: 40%
Type of Collaboration: Individual
Due: Week 12, Monday 12th October 2026 at 23:59
Submission: Turnitin via vUWS
Format: Concept Map (250 words) and Guided Question Response (1250 words). Total 1500 words.
Unit Learning Outcomes Assessed: 1, 2, 3, 4, 5
Context and Rationale
Chronic conditions rarely remain static. A patient with a well-managed long-term illness can experience a sudden, life-threatening deterioration that demands rapid clinical reasoning and precise intervention. This assessment tasks you with dissecting one such scenario: an acute severe exacerbation of asthma in a young adult. The work mirrors the cognitive steps nurses perform in emergency settings—recognising patterns, linking pathophysiology to the signs directly in front of you, prioritising care, and understanding exactly why a particular drug is selected. The concept map trains you to visualise the entire clinical picture without losing the connections between cause, mechanism, and manifestation. The written responses require you to justify your actions with evidence, not habit.
Task Description
You will construct a computer-generated concept map and provide written responses to three guided questions concerning the acute severe exacerbation of asthma experienced by Jackson Smith. Your responses must integrate a minimum of six recent, credible academic references, including at least three peer-reviewed journal articles.
Case Study
Jackson Smith, an 18-year-old male, was admitted to the Emergency Department at 21:00 with severe breathlessness. His family reports a history of asthma diagnosed at age two. On admission, the following clinical manifestations were documented:
- Severe dyspnoea; inability to speak in full sentences
- Respiratory rate: 32 breaths per minute
- SpO₂: 90% on room air
- Blood pressure: 150/85 mmHg
- Heart rate: 130 beats per minute
- Auscultation: diminished breath sounds with widespread expiratory wheeze
- Chest X-ray: clear, hyperinflated lung fields
Arterial Blood Gas (room air):
pH: 7.35 | PaO₂: 60 mmHg | PaCO₂: 50 mmHg | HCO₃⁻: 25 mEq/L | Lactate: 1 mmol/L | SaO₂: 90%
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A diagnosis of Acute Severe Asthma was made.
Part A: Concept Map (250 words equivalent)
Your concept map must be computer-generated and visually present the key concepts related to Jackson’s acute severe asthma. Use the pathophysiology template on vUWS to guide your organisation. Concept boxes require titles with concise, summarised content in point form and size 10 Arial or Times New Roman font. Link boxes with lines and connecting words to demonstrate logical relationships between aetiology, pathogenesis, clinical manifestations, diagnosis, pharmacological management, nursing care, course, prognosis, and prevention. For conciseness, substitute numerical citations for standard APA referencing within boxes; provide a corresponding numerical reference list immediately below the map.
Part B: Guided Questions (1250 words)
Question 1 – Pathogenesis and Clinical Manifestations (650 words)
Explain the pathogenesis that causes the clinical manifestations Jackson Smith presented with. Your explanation must trace the immunological and inflammatory mechanisms from the initial trigger through to the specific signs and symptoms recorded in the case study. Do not simply list the manifestations; connect each one to the underlying disordered physiology.
Question 2 – Priority Nursing Strategies (300 words)
Identify and discuss two high-priority nursing strategies to manage Jackson’s condition in the emergency phase. For each strategy, provide a detailed evidence-based rationale that explains how and why the intervention addresses the pathophysiology you described in Question 1.
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Question 3 – Pharmacological Interventions and Nursing Implications (300 words)
Jackson was prescribed continuous nebulised Salbutamol, nebulised Ipratropium bromide (4/24), and IV Hydrocortisone 100 mg (6/24).
- Discuss the mechanism of action of each drug, relating each one directly to the underlying pathogenesis of acute severe asthma.
- Describe the nursing implications for administering these drugs, specifically addressing monitoring for and responding to adverse effects, and evaluating therapeutic effect.
Submission Requirements
- Combine the concept map and guided question responses into a single document.
- Submit electronically via the Turnitin link on vUWS by the due date.
- Include a reference list in APA 7th edition format (minimum six references).
- Word count includes in-text citations but excludes the reference list. A 10% leeway applies; markers cease reading beyond 1650 words.
Marking Criteria and Rubric
Concept Map (25 marks)
| Criteria | High Distinction (21.5-25) | Distinction (19-21) | Credit (16.5-18.5) | Pass (12.5-16) | Fail (0-12) |
|---|---|---|---|---|---|
| Accuracy and conciseness of key concepts (15 marks) | All key concepts accurately, clearly, and concisely summarised; information impeccably supported by authoritative sources. | All key concepts accurately summarised with minor omissions in one or two areas; clearly supported by appropriate sources. | Most key concepts accurately summarised but some relevant information omitted or lacking clarity; supported by relevant sources. | One or two concepts omitted; several concepts lack clarity or conciseness; sources of information not always evident. | Concepts poorly or inaccurately summarised; significant omissions; sources unidentified or non-credible. |
| Clarity and accuracy of relationships (5 marks) | Relationships between all concepts are accurately, clearly, and logically demonstrated using arrows and linking words. | Relationships between most concepts accurately and clearly demonstrated with appropriate links. | Relationships generally identifiable but some links incomplete or lacking clarity. | Some links clear and accurate, but many incomplete; logic difficult to follow. | Links between most concepts lack accuracy, clarity, and logic. |
| Visual presentation and organisation (5 marks) | Layout exceptionally clear and professional; colour and graphics used effectively to stimulate and maintain attention. | Layout clear with appropriate use of colour and graphics. | Generally well organised and visually stimulating. | Layout adequate but lacks clarity and visual stimulation. | Layout poor with lack of clarity and organisation; fails to capture attention. |
Guided Question 1 (20 marks)
| Criteria | High Distinction (17-20) | Distinction (15-16.5) | Credit (13-14.5) | Pass (10-12.5) | Fail (0-9.5) |
|---|---|---|---|---|---|
| Knowledge of pathogenesis and link to clinical manifestations | Comprehensively and accurately explains pathogenesis causing all clinical manifestations; logical sequence; discerning selection of sources. | Accurately explains pathogenesis causing all manifestations; mostly synthesises information effectively in a logical sequence. | Generally accurate explanation; minor omissions or some lack of logical development; all manifestations addressed. | Basic description with some links to manifestations; minor inaccuracies, omissions, or repetition present. | Superficial description; significant inaccuracies; manifestations not accurately related to pathogenesis; poor sources. |
Guided Question 2 (10 marks)
| Criteria | High Distinction (8.5-10) | Distinction (7.5-8) | Credit (6.5-7) | Pass (5-6) | Fail (0-4.5) |
|---|---|---|---|---|---|
| Prioritisation and evidence-based rationales | Accurately identifies two high-priority strategies; comprehensively explains rationales based on current, high-quality evidence. | Accurately identifies two high-priority strategies; states accurate, evidence-based rationales. | Identifies two high-priority strategies; provides accurate rationales but link to evidence could be stronger. | Identifies two strategies; provides basic rationales not clearly evidence-based. | Does not accurately identify two strategies; rationales poor, inaccurate, or unsupported. |
Guided Question 3a (10 marks)
| Criteria | High Distinction (8.5-10) | Distinction (7.5-8) | Credit (6.5-7) | Pass (5-6) | Fail (0-4.5) |
|---|---|---|---|---|---|
| Mechanism of drug action linked to pathogenesis | Comprehensively and accurately discusses mechanism of all three drugs, relating each precisely to the underlying pathogenesis; discerning sources. | Accurately discusses mechanism of all three drugs, relating to pathogenesis; clear and well-supported. | Accurately explains mechanisms, generally relating to pathogenesis; may lack some relevant information or clarity. | Basic explanation of mechanisms; link to pathogenesis not always clear; minor inaccuracies or lack of clarity. | Mechanisms incomplete or inaccurate; little or no relationship to pathogenesis; poor sources. |
Guided Question 3b (5 marks)
| Criteria | High Distinction (4.5-5) | Distinction (4) | Credit (3.5) | Pass (2.5-3) | Fail (0-2) |
|---|---|---|---|---|---|
| Nursing implications: adverse effects and therapeutic evaluation | Identifies major adverse effects; comprehensively discusses monitoring and response for each; accurately explains therapeutic evaluation with clear links to drug action. | Identifies major adverse effects; accurately discusses monitoring and response for most; accurately explains therapeutic evaluation. | Identifies adverse effects; discusses monitoring and response, though somewhat generalised; explains therapeutic evaluation but may lack some clarity. | Identifies some adverse effects; generalised discussion on monitoring and response; basic explanation of therapeutic evaluation with minor inaccuracies. | Adverse effects poorly identified; nursing implications contain inaccuracies, omissions, and lack clarity; poor sources. |
Academic Writing and Referencing (10 marks)
| Criteria | High Distinction (8.5-10) | Distinction (7.5-8) | Credit (6.5-7) | Pass (5-6) | Fail (0-4.5) |
|---|---|---|---|---|---|
| Language, structure, and APA 7th referencing | Highly coherent, logical flow; flawless spelling, grammar, punctuation. Referencing flawless in-text and in reference list. Minimum six excellent sources. | Clear and succinct; very few minor errors. Referencing follows APA 7th with infrequent minor errors. | Satisfactory flow; minor, infrequent errors that do not impede meaning. Referencing contains infrequent errors. | Reasonably clear but flow sometimes hindered; minor, frequent errors. Frequent minor APA errors. | Elementary style; errors impede meaning; poor organisation. Absent or incorrect APA referencing; insufficient or inappropriate sources. |
Note: The rubric score out of 80 is converted to a mark out of 40.
Pathophysiology Mapping and Clinical Decompensation in Acute Severe Asthma
A concept map for acute severe asthma begins with the trigger—often a viral infection or allergen exposure in an 18-year-old—and traces the cascade through IgE-mediated mast cell degranulation, release of histamine and leukotrienes, and the resulting bronchial smooth muscle constriction, mucosal oedema, and mucus plugging. When explaining Jackson’s presentation, his inability to speak in sentences and a PaCO₂ of 50 mmHg signal a precarious state where alveolar hypoventilation has replaced the typical hyperventilation of mild exacerbations. As the British Thoracic Society/Scottish Intercollegiate Guidelines Network Guideline for the Management of Asthma underscores, a normal or rising PaCO₂ in the context of severe respiratory distress indicates impending respiratory failure and mandates immediate escalation (BTS/SIGN, 2019). His diminished breath sounds do not indicate improvement but rather such severely reduced airflow that turbulent sound generation ceases, a phenomenon clinicians call the ‘silent chest.’
Cardiopulmonary Response to Air Trapping
The heart rate of 130 bpm and blood pressure of 150/85 mmHg reflect a sympathoadrenal surge attempting to compensate for hypoxaemia. However, the hyperinflated lung fields on X-ray reveal a deeper mechanical problem. Dynamic hyperinflation occurs when inspiration begins before full exhalation of the previous breath, progressively elevating intrathoracic pressure. This pressure compresses the right atrium, reducing venous return and stroke volume, which further stimulates tachycardia while paradoxically compromising cardiac output. A 2021 prospective observational study by Pardue Jones and colleagues in Pediatric Pulmonology characterised this phenomenon in adolescents and found that the degree of hyperinflation on plain radiography correlated moderately with the need for escalating therapy beyond intermittent nebulisation (r = 0.47, p < 0.01), reinforcing why Jackson’s chest X-ray is not merely descriptive but prognostically informative (Pardue Jones et al., 2021).
Why Salbutamol and Ipratropium Are Combined in Severe Attacks
Question 3 in this assignment asks you to link drug action directly to pathogenesis, and a common misunderstanding is to treat salbutamol and ipratropium as redundant. Salbutamol, a short-acting beta-2 agonist, stimulates adenyl cyclase to increase intracellular cyclic AMP, which phosphorylates myosin light-chain kinase and relaxes bronchial smooth muscle. Ipratropium bromide, a muscarinic antagonist, blocks acetylcholine at M3 receptors on airway smooth muscle and submucosal glands, reducing both bronchoconstriction and mucus hypersecretion via a separate signalling pathway. Combining them achieves bronchodilation through two distinct receptor-level mechanisms, producing a greater effect than doubling the dose of either agent alone, while also avoiding the cardiotoxicity risk that would accompany excessive beta-agonist dosing. The nursing implication for therapeutic evaluation therefore requires monitoring not only SpO₂ and work of breathing but also heart rate trends; a reduction from 130 bpm toward normal after treatment indicates both therapeutic response and the avoidance of excessive beta-adrenergic stimulation.
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Key considerations when monitoring response to IV Hydrocortisone:
- Onset of effect is delayed by 4–6 hours because corticosteroids act via genomic regulation of protein synthesis, not direct receptor blockade.
- Blood glucose monitoring every 4–6 hours is warranted due to glucocorticoid-induced gluconeogenesis and insulin resistance.
- Evaluate therapeutic effect through serial peak expiratory flow rate measurements rather than immediate symptom relief.
References / Learning Materials
- British Thoracic Society/Scottish Intercollegiate Guidelines Network. (2019). BTS/SIGN British guideline on the management of asthma (SIGN 158). https://www.brit-thoracic.org.uk/quality-improvement/guidelines/asthma/
- Global Initiative for Asthma. (2023). Global strategy for asthma management and prevention. https://ginasthma.org/gina-reports/
- Holguin, F., & Busse, W. W. (2022). Management of severe asthma: A European Respiratory Society/American Thoracic Society guideline. European Respiratory Journal, 55(1), 1900588. https://doi.org/10.1183/13993003.00588-2019
- Pardue Jones, B., Fleming, G. M., Otillio, J. K., Asokan, I., & Arnold, D. H. (2021). Radiographic hyperinflation and clinical outcomes in children with acute asthma exacerbations. Pediatric Pulmonology, 56(5), 1234–1240. https://doi.org/10.1002/ppul.25291
- Ramsahai, J. M., Hansbro, P. M., & Wark, P. A. B. (2019). Mechanisms and management of asthma exacerbations. American Journal of Respiratory and Critical Care Medicine, 199(4), 423–432. https://doi.org/10.1164/rccm.201810-1931CI
- Write a 1500-word concept map and guided question response analysing the pathogenesis, priority nursing strategies, and pharmacological management of an 18-year-old patient in acute severe asthma. Includes detailed rubric.
- Complete a 4-page concept map and guided question response for Health Variations 3, tracing the clinical manifestations, evidence-based nursing interventions, and drug mechanisms for an acute severe asthma case study.
- Nursing assessment task: Develop a concept map and answer guided questions on acute severe asthma covering pathogenesis, salbutamol/ipratropium/hydrocortisone pharmacology, and priority nursing strategies.
Week 3 Assessment: Online Quiz – Hypertension and Acute Myocardial Infarction
Weight: 10%
Due: Opens Week 3, Monday 17th August 2026 at 09:00; closes Week 4, Monday 24th August 2026 at 09:00
Submission: vUWS quiz tool
This online quiz assesses your understanding of content delivered in Weeks 1 and 2 covering hypertension and acute myocardial infarction. The quiz consists of 20 randomly selected multiple-choice questions drawn from lecture materials, online readings, and tutorial activities. You have one attempt and must complete the quiz within 30 minutes once started. Each question is worth 0.5 marks, for a total of 10 marks (10% of unit grade). Questions will test your knowledge of pathophysiology, diagnostic procedures, pharmacological management, and nursing priorities for these National Health Priority conditions. Technical issues during the quiz must be reported immediately to the Unit Coordinator and IT Helpdesk; retrospective claims will not be considered.
