NCLEX Respiratory Nursing Review: Assessment, Conditions & Priority Actions

Respiratory content shows up on almost every NCLEX-RN exam, and there is a structural reason why: airway and breathing sit at the top of the ABC hierarchy, which makes respiratory problems the natural material for priority questions. When a test writer wants to know whether you can identify the client to see first, a patient who is not moving air is the cleanest way to ask. That means this content pays you twice — once on the straight knowledge items, and again on the prioritization and delegation questions where a respiratory finding is the tiebreaker. This review walks through the assessment findings that matter, the conditions tested most often, the interventions that consistently show up as correct answers, and the question patterns that trip students up.

Start with what a normal assessment looks like

You cannot recognize a subtle abnormal finding if the normal is fuzzy. Anchor these first, then everything else becomes a comparison.

• Respiratory rate: roughly 12–20 breaths per minute in a resting adult. Pediatric rates are considerably faster and drop with age — an infant breathing 40 times a minute is not in distress; an adult is.
• Oxygen saturation: generally 95–100% on room air for a healthy adult. Know that a client with chronic CO₂ retention may have a lower acceptable baseline, and that the provider or facility protocol defines the target.
• Breath sounds: clear and equal bilaterally, with no adventitious sounds.
• Work of breathing: quiet, effortless, no accessory muscle use, no nasal flaring, no retractions, able to speak in full sentences.

Learn the adventitious sounds by what they imply, not just by their name. Crackles suggest fluid or collapsed alveoli popping open. Wheezes suggest narrowed airways. Stridor is a high-pitched sound over the upper airway and is an emergency — it means the airway itself is obstructing. Absent or diminished sounds on one side mean air is not getting to that lung, which points toward pneumothorax, a mucus plug, or a displaced endotracheal tube.

The findings that mean 'act now'

NCLEX loves to hand you four stable-sounding clients and one who is quietly decompensating. These are the findings that should pull your attention immediately:

• Stridor — upper airway obstruction until proven otherwise.
• A previously wheezing asthma client whose chest has gone silent. This is the classic trap. Silence is not improvement; it can mean airflow has dropped too low to generate sound.
• New confusion, restlessness, or agitation. Early hypoxia often presents as a behavior change before it presents as a number. Do not dismiss it as anxiety.
• Inability to speak in full sentences, tripod positioning, or accessory muscle use.
• Sudden sharp chest pain with dyspnea — think pulmonary embolism or pneumothorax.
• Tracheal deviation with respiratory distress — a hallmark of tension pneumothorax and a true emergency.

Late signs like cyanosis and bradycardia are exactly that — late. If a question offers you an early sign and a late sign, the early sign is usually the more valuable answer, because the exam is testing whether you would have caught it in time.

COPD vs. asthma: the distinction the exam keeps testing

Both cause wheezing and dyspnea, so questions hinge on the differences.

• Asthma is characterized by reversible airway narrowing, typically triggered by allergens, exercise, cold air, or irritants. Between attacks the client may be entirely well.
• COPD involves chronic, largely irreversible airflow limitation. Expect a barrel chest, prolonged expiration, chronic cough, and a client who has adapted to a lower baseline.

Medication questions turn on one idea: rescue versus maintenance. A short-acting beta-2 agonist such as albuterol is the rescue inhaler used during acute symptoms. Inhaled corticosteroids and long-acting bronchodilators are maintenance drugs that do nothing for an attack in progress. If a client reports using their rescue inhaler more and more often, that is worsening control and needs to be reported — not reassurance.

Two teaching points come up repeatedly: when both are ordered, the bronchodilator is used first so the airway opens before the steroid is delivered, and after an inhaled corticosteroid the client should rinse the mouth to reduce the risk of oral candidiasis. Pursed-lip breathing is a COPD staple — it keeps airways open longer during exhalation and helps the client empty trapped air.

Pneumonia, tuberculosis, and pulmonary embolism

Pneumonia questions usually reward mobility and airway clearance: encourage fluids unless contraindicated, get the client up and moving, use incentive spirometry, and reposition frequently. Older adults may present atypically — new confusion or a fall can be the first sign rather than a fever.

Tuberculosis is largely an infection-control question. TB requires airborne precautions: a negative-pressure room, and an N95 respirator for staff. Classic symptoms include a persistent cough, night sweats, and unintended weight loss. The teaching point graders look for is completing the entire multi-drug regimen even after the client feels better, because stopping early drives resistance. Know that rifampin can turn body fluids orange — expected and harmless — while isoniazid carries a risk of liver injury, so new jaundice, dark urine, or right upper quadrant pain must be reported.

Pulmonary embolism shows up as sudden dyspnea, pleuritic chest pain, tachycardia, and anxiety, often in a client with a risk factor such as immobility, recent surgery, or a known DVT. The tested priorities are recognizing it fast, staying with the client, raising the head of the bed, applying oxygen, and notifying the provider immediately.

Positioning, oxygen delivery, and chest tubes

Positioning is one of the highest-yield intervention categories on the entire exam, because it is a nursing action you can take without an order:

• Any client in respiratory distress: high-Fowler’s or sitting upright, which lets the diaphragm drop and the lungs expand.
• Unilateral lung disease: the general principle is good lung down, positioning the healthier lung dependent to improve perfusion where gas exchange is still working.
• Post-thoracic-surgery and post-procedure positioning is often specified by the surgeon — when a question gives you a specific order, follow it over the general rule.

Oxygen delivery questions ask you to match device to need. A nasal cannula is comfortable and appropriate for low-flow needs; a simple mask delivers more; a non-rebreather with a reservoir bag is the high-concentration option for acute distress; and a Venturi mask is the choice when a precise, controlled concentration matters, which is why it is associated with COPD. Safety content is reliably tested too: oxygen supports combustion, so no smoking or open flame, and humidify higher flow rates to protect the mucosa.

Chest tube items reward calm, principled reasoning. Keep the drainage system below chest level. Never routinely clamp a chest tube, since trapped air can build into a tension pneumothorax. Continuous bubbling in the water-seal chamber signals an air leak and should be investigated, while gentle tidaling with respiration is expected. If the tube is accidentally pulled out, cover the site per facility protocol and get help immediately.

How to answer respiratory questions correctly

Content knowledge gets you to a shortlist. These habits get you to the right option.

1. Run the ABCs, but do not stop at the letter A. Airway wins — but only if the airway is actually threatened. A client with a patent airway and a saturation of 84% is a breathing problem, and that is the one to treat.
2. Assess before you intervene, unless the client is unstable. If someone is in acute distress, the exam wants action — reposition, apply oxygen, stay with them — not another round of data gathering.
3. Prefer the independent nursing action when the options are mixed. Raising the head of the bed requires no order and is frequently the best available first step.
4. Watch for the trend, not the isolated number. A rate climbing from 18 to 26 over two hours is more alarming than a single reading of 24.
5. Beware the reassuring-sounding distractor. Options that promise the client everything is fine, or that delay escalation, are almost never correct when a warning sign is on the table.

The most efficient way to build this instinct is repetition with rationales. Work respiratory question sets, and for every item you miss, write one sentence explaining why the correct answer outranked the one you chose. That single habit converts scattered facts into the ranking skill the exam is actually measuring.