Immunity and Connective-Tissue D… PNLE Questions

Introduction

This page covers 18 published Tangerine original PNLE-style practice questions. Use the set diagnostically: identify whether you can recognize immune changes, rank urgent threats, connect findings across body systems, and choose safe nursing actions.

The canonical scope includes immune effects, hypersensitivity, autoimmune and connective-tissue disorders, and immunosuppression. Practice decisions include recognizing progression toward airway or circulatory compromise, distinguishing cutaneous from systemic disease, screening for organ involvement, supporting function during inflammation, and protecting patients whose immune responses are reduced.

Tangerine places this topic under NP4 — Medical-Surgical. Under the 2025 Enhanced TOS, this is a Tangerine pedagogical lens mapped across relevant competencies in the official five-subject PNLE TOS, not a separate official test subject. The TOS provides broad competency relationships rather than a guaranteed microtopic weight, so exact distribution varies by exam form.

Key concepts

Identify the immediate threat
Recognize: Immune-related questions may present a symptom cluster rather than a named diagnosis. Look for airway, breathing, circulation, neurologic status, and rapid change.
Decide: Rank the threat that can cause irreversible harm first, then gather details.
Avoid: Letting a familiar label replace an ABC assessment.
Respond to hypersensitivity progression
Recognize: A reaction may move from skin findings to airway swelling, breathing difficulty, or circulatory compromise.
Decide: Treat progression or hypotension as urgent; call for help and support ABC per emergency protocol.
Avoid: Waiting for every classic sign before escalating.
Separate autoimmune activity from a local finding
Recognize: Autoimmune disease involves immune attack on self tissues; cues may include recurring inflammation across skin, joints, or organs.
Decide: Link findings, assess function, and look for evidence of systemic involvement.
Avoid: Interpreting one symptom in isolation.
Screen for organ involvement in lupus
Recognize: New edema, changing urine output or urine characteristics, rising blood pressure, marked fatigue, or persistent joint symptoms can change priority.
Decide: Report concerning renal or systemic changes and protect prescribed follow-up.
Avoid: Treating a visible rash as the whole assessment.
Distinguish discoid from systemic lupus
Recognize: Discoid lupus centers on cutaneous manifestations; systemic lupus requires attention to effects beyond the skin.
Decide: Use the distribution of findings to choose focused assessment and teaching.
Avoid: Assuming either label predicts identical risks.
Protect the immunosuppressed patient
Recognize: A reduced immune response can make deterioration less obvious and increases the importance of exposure prevention, assessment, and ordered monitoring.
Decide: Check subtle changes, follow precautions and prescribed therapy, and escalate unexpected findings.
Avoid: Waiting for dramatic fever or inflammation.
Preserve function during connective-tissue inflammation
Recognize: Persistent polyarthritis may limit movement and self-care even when no immediate organ threat is present.
Decide: Balance activity, rest, pain assessment, joint protection, and function-focused teaching.
Avoid: Measuring success only by pain score or choosing immobility without reassessment.

What to expect on the PNLE

The inventory supports question forms that ask for the priority response to a rapidly progressing hypersensitivity reaction, the significance of hypotension, the early or characteristic manifestation of autoimmune disease, and the distinction between cutaneous and systemic lupus. Other forms require explaining a mechanism, linking findings to possible organ involvement, or selecting management that preserves function during persistent inflammation.

The current inventory contains 6 easy, 5 medium, and 7 hard questions. Its Bloom distribution is applying 7, evaluating 1, understanding 3, remembering 4, and analyzing 3, so preparation should move beyond label recall toward cue interpretation, prioritization, comparison, and justification of the safest action.

Remembering and understanding: retrieve core distinctions, immune effects, and disorder patterns.
Applying: use a presented cue cluster to choose assessment, escalation, or teaching.
Analyzing: connect skin, joint, renal, respiratory, and circulatory findings without isolating one symptom.
Evaluating: defend why one nursing action is safer and more urgent than competing options.

These inventory patterns guide practice, not prediction. Exact topic distribution varies by exam form.

Study tips

Run a diagnostic attempt. Answer all 18 questions before reviewing explanations. Mark each response as confident, guessed, or uncertain, and record the cue that changed your choice.
Use focused retrieval by scope. Separate missed items into hypersensitivity, autoimmune and connective-tissue disorders, immune effects, and immunosuppression. Create a comparison table on paper with three columns: pattern, key cue, and first nursing decision.
Example grid:
Hypersensitivity progression | airway, breathing, or circulation change | escalate and support ABC
Discoid lupus | primarily cutaneous findings | focus assessment on skin and systemic clues
Systemic lupus | findings beyond the skin | screen for organ involvement
Immunosuppression | reduced or subtle response | apply precautions and monitor changes
Review rationales and errors. For every missed or guessed item, write the decisive cue, the immediate safety concern, the best action, and why the strongest distractor was less safe. This turns answer review into retrieval of a decision rule.
Retry after a gap. Re-answer the missed items without looking at the key, then explain the reasoning aloud or in one sentence. Keep a short error list and remove an item only when you can apply the rule to a changed presentation.
Finish with mixed timed practice. Combine this topic with other medical-surgical questions and practice moving from assessment to priority action without relying on the disorder name. Review timing, omissions, and unsafe priorities after the set.

Common mistakes to avoid

Stopping at the rash during an allergic reaction. A skin finding may be an early cue, but new airway, breathing, or circulatory changes show progression. Reassess ABC and escalate when the reaction threatens perfusion or ventilation.
Using discoid and systemic lupus as interchangeable labels. The corrective cue is the distribution of disease: cutaneous findings point toward a skin-focused assessment, while findings beyond the skin require attention to systemic involvement.
Missing possible renal involvement in systemic lupus. New edema, altered urine output or characteristics, and blood pressure changes should prompt focused assessment and reporting. A visible skin manifestation does not exclude a more urgent internal problem.
Expecting a dramatic inflammatory response in immunosuppression. Reduced immune response can make deterioration less obvious. Treat subtle changes, unexpected symptoms, and exposure concerns as assessment cues rather than waiting for a striking presentation.
Choosing comfort measures before the threat that can cause rapid harm. Pain, fatigue, and persistent polyarthritis matter, but they should not outrank airway compromise, hypotension, or new organ-system changes. Use ABC and immediate physiologic risk to set priority.

Try a question

A real Immunity and Connective-Tissue Disorders question from our bank. Give it a shot.

Hard

A client with anaphylaxis has wheezing, hypotension, and facial edema. Which mediator effect most directly causes the hypotension?

A

Prostaglandins reduce airway resistance without changing vascular tone

B

Bradykinin causes vasoconstriction without capillary leakage

C

Histamine causes vasodilation and increased capillary permeability

D

Leukotrienes relax vessels while preserving intravascular volume

Rationale

Understanding the physiologic response in anaphylaxis is crucial for effective, rapid nursing care. Anaphylaxis is a severe, life-threatening hypersensitivity reaction characterized by sudden systemic release of inflammatory mediators, primarily in response to an allergen exposure. Among these mediators, histamine plays a central and immediate role.

Histamine is released from mast cells and basophils when they are activated by immunoglobulin E (IgE) during an allergic event. The two most clinically significant effects of histamine relevant to anaphylaxis include:

Vasodilation: Histamine binds to H1 and H2 receptors on vascular smooth muscle, resulting in relaxation (vasodilation). Vasodilation decreases systemic vascular resistance, leading directly to the hypotension observed during anaphylactic shock. This sudden decrease in blood pressure can rapidly compromise organ perfusion—a critical threat in any emergency.
Increased Capillary Permeability: Histamine increases the permeability of capillary walls, allowing plasma to leak into interstitial tissues. This not only contributes to the development of edema (such as facial swelling) but also further decreases circulating blood volume, worsening hypotension.

The other options do not accurately describe mediators’ roles during anaphylaxis:

Option	Why It’s Incorrect
A. Prostaglandins	While some prostaglandins can modulate airway tone, they do not directly cause vasodilation significant enough to produce hypotension in anaphylaxis. Their role is more pronounced in inflammation and pain, not acute vascular collapse.
B. Bradykinin	Bradykinin causes vasodilation and increases permeability, but in anaphylaxis, histamine’s effects are more immediate and pronounced, making histamine the direct mediator of hypotension. The statement about vasoconstriction is incorrect for bradykinin.
D. Leukotrienes	Leukotrienes are potent bronchoconstrictors and contribute to airway edema, but they do not primarily cause vasodilation or significantly alter vascular volume during anaphylaxis. Leukotriene-induced changes are more related to airway rather than the rapid hypotensive response.

Clinical Pearl: Remember “histamine = hypotension,” as it triggers both rapid vasodilation and increased capillary leak, leading to both low BP and swelling (edema). Recognition of the pathophysiology underlies the emergency treatment protocol—prompt epinephrine administration counteracts these effects by causing vasoconstriction and stabilizing capillary membranes.

Prompt recognition and intervention are critical nursing responsibilities in suspected anaphylaxis. Understanding the role of mediators like histamine ensures you respond quickly and correctly to prevent shock and airway compromise.

Hinkle, Janice L., Cheever, Kerry H., & Overbaugh, Kristen J. (2022). Brunner & Suddarth's Textbook of Medical-Surgical Nursing (15th ed.). Wolters Kluwer. https://shop.lww.com/Brunner---Suddarth-s-Textbook-of-Medical-Surgical-Nursing/p/9781975161033

References and further reading

PRC Enhanced Table of Specifications for the Nurses Licensure Examination official
The current public competency and cognitive-level blueprint, effective from the November 2025 NLE onward.
Tangerine Prep PNLE Reviewer question bank
The live source for the published question count, question previews, rationales, and inventory distributions on this page.

How this page is built

The counts and distributions on this page come from Tangerine Prep's live published question bank. The source inventory was last updated on August 12, 2026.

The questions are original PNLE-style practice items, not recalled or leaked board questions. Topic scope follows Tangerine's pedagogical taxonomy and is mapped to the PRC 2025 Enhanced Table of Specifications, effective from the November 2025 NLE onward. Exact topic distribution varies by exam form.