Respiratory Failure and Pulmonar… PNLE Questions
Introduction
This live Tangerine inventory contains 10 original PNLE-style practice questions for Respiratory Failure and Pulmonary Vascular Disease. The set was last updated August 12, 2026, belongs to NP4, Medical-Surgical, and covers ARDS, acute respiratory failure, pulmonary embolism, pulmonary hypertension, and ventilator complications. Basic oxygenation and airway skills are outside the canonical inclusion scope.
The clinical decisions center on recognizing deterioration, linking oxygenation or ventilation findings with perfusion, interpreting ABG information alongside the patient’s condition, and prioritizing assessment, escalation, and response evaluation. You will also practice distinguishing diffuse lung injury, acute vascular obstruction, chronic pulmonary vascular pressure load, and complications that emerge during mechanical ventilation.
The 2025 Enhanced TOS is the official framework for the PNLE, while this topic is a Tangerine pedagogical lens mapped across relevant competencies in the official five-subject PNLE TOS. It is not a separate official test subject. The TOS gives weights to broad competency areas, not a guaranteed microtopic count, so this inventory cannot establish how many questions an exam form will contain.
Key concepts
- ARDS and difficult-to-correct hypoxemia
Recognize: Severe oxygenation impairment that persists despite expected support, together with a serious diffuse lung process and worsening respiratory status, signals a high-risk gas-exchange problem.
Decide: Reassess the patient and response to prescribed support, identify deterioration promptly, and escalate concerns through the appropriate clinical chain.
Avoid: Assuming that a single saturation value explains severity or that increasing oxygen alone resolves the underlying problem. - Acute respiratory failure
Recognize: Abnormal gas exchange, increased work of breathing, altered mental status, or fatigue may indicate that the patient cannot maintain adequate oxygenation or ventilation.
Decide: Identify the most urgent assessment finding, support ordered therapy, trend the response, and communicate worsening promptly.
Avoid: Waiting for a textbook ABG pattern when the patient is visibly deteriorating, or treating an ABG number without assessing the patient. - Pulmonary embolism and obstructive shock
Recognize: An abrupt respiratory or circulatory change is especially concerning when hypoxemia occurs with hypotension, poor perfusion, or signs of right-sided strain.
Decide: Prioritize urgent assessment, hemodynamic monitoring, escalation, and preparation for prescribed treatment.
Avoid: Dismissing sudden findings as anxiety or postoperative discomfort, or delaying action while waiting for one confirmatory symptom. - Pulmonary hypertension and cor pulmonale
Recognize: Pulmonary hypertension creates a chronic pressure load in the pulmonary circulation and may lead to right-ventricular enlargement or failure.
Decide: Assess systemic perfusion, venous congestion, activity tolerance, oxygenation, and fluid balance as connected findings.
Avoid: Labeling every edema or neck-vein change as left-sided heart failure without considering the pulmonary disease context and right-sided consequences. - Ventilator complications
Recognize: Sudden desaturation, new hypotension, unequal chest movement or breath sounds, changing airway pressures, and alarm patterns are patient-safety cues.
Decide: Assess the patient first, verify connections and prescribed settings according to policy, and escalate a possible complication promptly.
Avoid: Silencing an alarm, changing settings independently, or troubleshooting the machine before checking the patient. - ABG and clinical synthesis
Recognize: ABG data may point toward an oxygenation problem, ventilatory failure, or an acid-base disturbance, but the interpretation must be compared with mental status, work of breathing, perfusion, and trends.
Decide: Choose the nursing priority that addresses the active threat and provides a way to evaluate response.
Avoid: Selecting a diagnosis from pH, carbon dioxide, or bicarbonate alone when the result does not fit the clinical picture.
What to expect on the PNLE
The live set uses clinical vignettes that ask you to connect respiratory findings with a priority action or interpretation. Its scope supports questions about difficult-to-correct hypoxemia in ARDS, acute postoperative deterioration, sudden hypotension with suspected pulmonary embolism, chronic pulmonary vascular effects, ABG-based nursing judgment, and ventilator complication cues. Items may ask for the best assessment, immediate response, likely explanation, or evaluation of whether an intervention is working.
Six of the 10 questions are labeled hard and four medium. The Bloom distribution is applying 4, remembering 1, evaluating 1, and analyzing 4, so the inventory mainly supports using cues in context, separating competing explanations, and judging the next safe step; one item emphasizes recall and one emphasizes evaluation. These figures describe the supplied practice inventory, not a forecast of exam difficulty or content.
Exact topic distribution varies by exam form. Use this page to practice the reasoning process across the canonical scope rather than memorizing a fixed allocation. For a challenging item, ask what changed, what threat is most immediate, which finding carries the greatest safety significance, and what reassessment would show improvement or deterioration.
Study tips
- Run diagnostic practice first. Answer all 10 live questions without notes. For each item, record the cue that drove your answer, the action you chose, and whether your uncertainty came from knowledge, prioritization, or reading the stem.
- Use focused retrieval for the weak distinction. Make short prompts such as ARDS versus pulmonary embolism, pulmonary hypertension versus cor pulmonale, and ventilator complication versus worsening disease. Draw a comparison table with these columns: condition, dominant problem, highest-value cues, first nursing priority, and reassessment finding.
- Review the rationale and your error. Write one sentence explaining why the correct option is safer and why your choice was less appropriate. Tie every correction to a cue such as abrupt hypotension, persistent hypoxemia, right-sided strain, an ABG pattern, or a ventilator alarm.
- Retry with spacing. Return to missed questions on later study sessions without looking at the answer first. Reconstruct the decision pathway, then check whether your explanation now includes the patient’s trend and the need for escalation.
- Finish with mixed timed practice. Combine these questions with relevant NP4 medical-surgical items, then review accuracy, time use, and rationale quality. Keep a final list of recurring errors involving gas exchange, perfusion, ABG interpretation, and ventilator safety.
Common mistakes to avoid
- Treating all hypoxemia as the same problem.
A low oxygen reading does not by itself distinguish ARDS, acute respiratory failure, pulmonary embolism, or a ventilator complication. Correct the error by examining onset, associated perfusion changes, lung findings, and the response to prescribed support. - Choosing an answer from one ABG value.
pH, carbon dioxide, or bicarbonate may identify part of the problem but cannot replace assessment of mental status, work of breathing, perfusion, and trends. The safer decision is the one that fits the complete clinical picture. - Missing pulmonary embolism when the presentation is sudden.
Hypotension, poor perfusion, and signs of right-sided strain raise the urgency even when a classic symptom is absent. Treat abrupt respiratory and circulatory change as a priority cue and escalate promptly. - Confusing pulmonary hypertension with left-sided heart failure.
Review the disease context and ask whether chronic pulmonary vascular pressure has produced right-ventricular enlargement or failure. This prevents edema or neck-vein findings from being interpreted without their pulmonary connection. - Responding to a ventilator alarm by focusing on the machine first.
New desaturation, hypotension, altered breath sounds, or pressure changes may signal a patient complication. Check the patient, verify connections and prescribed settings according to policy, and escalate rather than simply silencing the alarm.
Try a question
A real Respiratory Failure and Pulmonary Vascular Disease question from our bank. Give it a shot.
A client with obstructive sleep apnea has recurrent nocturnal hypoxemia. Which long-term vascular consequence may develop?
Clients with obstructive sleep apnea (OSA) experience repetitive upper airway obstruction during sleep, resulting in intermittent hypoxemia (decreased oxygen levels). This hypoxemia stimulates a series of physiological changes—among the most clinically significant is pulmonary vasoconstriction.
Why Pulmonary Hypertension Develops: When the lungs are repeatedly exposed to low oxygen, the pulmonary arteries constrict in response (a process called hypoxic pulmonary vasoconstriction). Over time, this increased resistance raises the pressure within pulmonary circulation, leading to pulmonary hypertension. This can eventually strain the right side of the heart, creating the risk for right-sided heart failure (cor pulmonale), a well-known long-term complication of chronic OSA. This pathophysiology is emphasized in Udan's Nursing Review Book (Green Book) and is a classic board concept.
| Option | Analysis |
|---|---|
| A. Reduced sympathetic activity | Incorrect. OSA causes increased, not reduced, sympathetic activity due to frequent hypoxic episodes and sleep fragmentation. This surge in catecholamines contributes to systemic hypertension and arrhythmias, not to the development of pulmonary hypertension. |
| B. Pulmonary hypertension from hypoxic vasoconstriction | Correct. Chronic hypoxemia repeatedly triggers pulmonary vasoconstriction, increasing pulmonary artery pressures over time and predisposing to pulmonary hypertension—an evidence-based complication of OSA. |
| C. Left-to-right intracardiac shunting | Incorrect. Left-to-right shunting involves structural cardiac defects such as atrial or ventricular septal defects and is not a consequence of OSA or nocturnal hypoxemia. |
| D. Systemic hypotension from permanent vasodilation | Incorrect. OSA leads to episodic increases in sympathetic tone, causing elevated systemic blood pressure, not chronic hypotension. Vasodilation and hypotension are not expected sequelae in OSA. |
Clinical Pearls and Memory Aids:
- Remember: Chronic hypoxemia → vasoconstriction in the lungs → pulmonary hypertension.
- OSA = "Obstruction Stops Air," causes hypoxia that stresses the pulmonary vasculature, not systemic vasodilation.
- Association: Pulmonary hypertension is a "pressure complication" following repeated "pressure" (constriction) from hypoxic events.
Nursing Concepts and Priorities:
- Early identification of symptoms (snoring, daytime somnolence, witnessed apneas) and ensuring adherence to CPAP therapy helps reduce the risk of developing pulmonary vascular disease.
- Monitor for right-sided heart failure symptoms (edema, JVD) in clients with long-standing OSA.
Understanding the hemodynamic effects of chronic hypoxemia is essential in managing clients with sleep-disordered breathing and anticipating complications.
- 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
More Respiratory Failure and Pulmonary Vascular Disease questions
10 questions available. Sign up to practice all of them.
A client with tension pneumothorax becomes hypotensive and has distended neck veins. Why does blood pressure fall?
A client with acute respiratory distress syndrome has severe hypoxemia that responds poorly to oxygen. Which mechanism best explains the refractory hypoxemia?
A patient is 2 days post operative. The vital signs are: BP 120/70, HR 110, RR 26, and Temperature 100.4 degrees Fahrenheit (38 degrees Celsius). The patient suddenly becomes profoundly short of breath, skin color is gray. Which evaluation would have alerted the nurse first to the patient’s change in condition?
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.