Immune content connects to every other speciality, which is why it rewards study out of proportion to the time it takes. Whether the patient is neutropenic, allergic, or autoimmune, the nursing question is the same: is this immune system underreacting, overreacting, or attacking the patient’s own tissue? These immune nursing study notes organise the topic around that distinction.
How to use this study guide
Sort every condition into one of three buckets — too little immune response, too much, or misdirected. The bucket predicts the nursing priority: protect from infection, stop the reaction, or manage inflammation and immunosuppression.
Types of immunity
- Innate — present from birth; skin, mucous membranes, inflammatory response; non-specific
- Adaptive — develops after exposure; specific and confers memory
- Active natural — immunity following actual infection
- Active artificial — immunity following vaccination
- Passive natural — maternal antibodies via placenta or breast milk; temporary
- Passive artificial — immunoglobulin administration; immediate but short-lived
Anaphylaxis: recognition and response
Anaphylaxis is the immune emergency most likely to appear on an exam, and the correct first action is consistent: epinephrine, given intramuscularly into the lateral thigh, without delay.
- Signs: urticaria, angioedema, wheeze, stridor, hypotension, sense of impending doom
- First action — administer epinephrine intramuscularly; do not wait for hypotension
- Maintain the airway and prepare for possible intubation
- Provide oxygen and IV fluids for hypotension
- Antihistamines and corticosteroids are adjuncts, never the first action
- Observe for a biphasic reaction hours after apparent recovery
Neutropenia and protecting the immunocompromised
A neutropenic patient may be seriously infected without producing a fever, and fever in a neutropenic patient is an emergency requiring immediate cultures and antibiotics.
- Perform meticulous hand hygiene — the single most effective measure
- Avoid fresh flowers, standing water, and raw or undercooked foods per protocol
- Avoid invasive procedures, including rectal temperatures and suppositories
- Screen visitors for any signs of illness
- Report any temperature elevation immediately
Autoimmune conditions you should recognise
- Systemic lupus erythematosus — butterfly rash, photosensitivity, joint pain; monitor renal function
- Rheumatoid arthritis — symmetrical joint involvement with morning stiffness lasting over an hour
- Multiple sclerosis — relapsing neurological deficits; heat worsens symptoms
- Myasthenia gravis — muscle weakness worsening with activity; monitor swallowing and respiratory effort
- Corticosteroid therapy — increases infection and hyperglycaemia risk; never stop abruptly
HIV and infection-control principles
- HIV targets CD4 T-cells; a falling CD4 count indicates progressive immunosuppression
- Antiretroviral adherence is the central teaching priority — resistance follows missed doses
- Standard precautions apply to all patients and all body fluids
- Airborne precautions for tuberculosis, measles, and varicella; use a negative-pressure room
- Droplet precautions for influenza and pertussis; contact precautions for C. difficile with soap and water hand hygiene
NCLEX tips: immune nursing
- Epinephrine is always the first action in anaphylaxis — never an antihistamine.
- Fever in a neutropenic patient is an emergency, even when it is low grade.
- C. difficile requires soap and water; alcohol gel does not kill the spores.
- For myasthenia gravis, respiratory status and swallowing are the priority assessments.
- Hand hygiene is the correct answer far more often than any protective equipment option.
Inflammation and the stages of healing
Inflammation is the innate immune response at work, and distinguishing normal inflammation from infection is a recurring clinical judgement. Expected inflammation is localised and improving; infection spreads, produces purulent drainage, and worsens over time.
- Cardinal signs — redness, heat, swelling, pain, and loss of function
- Expected after surgery — mild localised warmth and redness that decreases each day
- Concerning — spreading redness, purulent drainage, foul odour, increasing pain, systemic fever
- Healing phases — inflammatory, proliferative, then maturation, which continues for months
- Delayed healing — poor nutrition, corticosteroids, diabetes, smoking, and impaired circulation
Protein and vitamin C intake support wound healing, which is why nutritional assessment belongs in the care plan for any patient with a slow-healing wound.
Turn this guide into active review
Reading through notes once is recognition, not recall. Convert each section above into questions you answer from memory, then check yourself. The Immune System Nursing Study Notes Bundle packages this material as condensed, exam-ready PDF notes organised by condition, if you would rather review from a prepared set than build one.
Frequently asked questions: immune nursing
What is the first action in anaphylaxis?
Administer intramuscular epinephrine into the lateral thigh immediately. Airway support, oxygen, and fluids follow. Antihistamines and steroids are adjunctive and never delay epinephrine.
Why do neutropenic patients need special precautions?
They cannot mount a normal inflammatory response, so infection can progress rapidly with few classic signs. Protective measures and immediate treatment of any fever are the nursing priorities.
What is the difference between active and passive immunity?
Active immunity is produced by the person’s own immune system after infection or vaccination and confers memory. Passive immunity is borrowed — maternal antibodies or administered immunoglobulin — and is immediate but temporary.
Related guides on Lectures Note
- Fundamentals of Nursing Study Notes — ADPIE, safety, and core clinical skills
- 6-Week NCLEX Study Plan — weekly review goals and exam-day strategy