HomeCheat SheetsPhysiological Adaptation

Pneumothorax — NCLEX Cheat Sheet

Air in pleural space
🔖 Save
👤 By the CinnaRN Clinical Content Team 🕐 Updated 2026-08-23 🏷️ Physiological Adaptation 🔖 Free to read, print, and share

Also known as: collapsed lung · air in chest · tension pneumothorax · punctured lung

Pneumothorax: air in the pleural space collapsing the lung
Pneumothorax: air in the pleural space collapsing the lung. Illustration: BruceBlaus via Wikimedia Commons, CC BY 3.0.
💡

Use this quick-reference guide to spot, treat, and prevent Pneumothorax on the NCLEX. Keep it handy during review and on exam day!

🩺

📒 The 1-minute cheat sheet

🩺 Signs

  • Sudden sharp pain, dyspnea
  • ↓/absent breath sounds 1 side
  • ↓ chest movement, hyperresonance

🚩 Report

  • Tension: tracheal deviation
  • ↓ BP, JVD → emergency

✅ Do

  • Chest tube to re-expand lung
  • Tension: needle decompression
  • O₂, high Fowler's, monitor

⚠️ Causes

  • Trauma, central line, COPD

📚 Pneumothorax — full study notes

The cheat sheet above is your quick recall card. These notes go deeper — what it is, what to do first, what must be reported, and what to teach.

A pneumothorax is the accumulation of air in the pleural space, which causes loss of negative pressure and collapse of the lung on the affected side. It may be spontaneous, traumatic, or iatrogenic (after central line placement or thoracentesis). A tension pneumothorax is a life-threatening emergency in which trapped air shifts the mediastinum and compresses the heart and great vessels.
🔑

Key points

Understand these first

Nursing priorities

What to do, in order
🚩

Red flags — report now

Escalate immediately
🧪

Labs & values

Numbers to know
🗣️

Patient teaching

What patients must know

❓ Pneumothorax: NCLEX FAQs

What are the priority nursing interventions for Pneumothorax?

Administer high-flow oxygen and position the patient in high Fowler's. Prepare for emergency needle decompression for tension pneumothorax, followed by chest tube insertion. Assist with chest tube placement to re-expand the lung and restore negative pressure. Monitor respiratory status, breath sounds, oxygen saturation, and the chest drainage system.

What are the warning signs of Pneumothorax a nurse must report?

Tracheal deviation, severe hypotension, and distended neck veins indicate a tension pneumothorax requiring immediate needle decompression. Rapidly worsening dyspnea, absent breath sounds, and falling oxygen saturation are emergencies. Sudden onset after a procedure such as central line placement or thoracentesis must be reported at once.

What do I need to know about Pneumothorax for the NCLEX?

Sudden sharp pleuritic chest pain, dyspnea, and decreased or absent breath sounds on the affected side are classic. The affected side shows reduced chest movement and hyperresonance to percussion. Tachycardia, tachypnea, and hypoxemia accompany significant collapse. Tension pneumothorax produces tracheal deviation away from the affected side, jugular vein distention, and severe hypotension.

What patient teaching is important for Pneumothorax?

Avoid air travel, scuba diving, and high altitudes until cleared by the provider after a spontaneous pneumothorax. Stop smoking, which increases the risk of recurrence. Report sudden chest pain or shortness of breath immediately as it may signal recurrence.

Quick Tip

Sudden sharp pleuritic chest pain, dyspnea, and decreased or absent breath sounds on the affected side are classic.

Was this helpful? ✎ Suggest an edit

Master Pneumothorax with practice, not just reading

4,000+ NCLEX-style questions with rationales, 51 interactive NGN cases, and an AI tutor — free every day, no card needed.

Practice Physiological Adaptation questions free →

One account — your progress syncs across phone, tablet & laptop.

Related Physiological Adaptation cheat sheets

HypokalemiaK+ < 3.5 mEq/L HyperkalemiaK+ > 5.0 mEq/L HyponatremiaNa+ < 135 mEq/L Heart FailurePump fails → congestion Diabetic Ketoacidosis (DKA)Glucose > 250, pH < 7.35 HypoglycemiaGlucose < 70 mg/dL COPDChronic airflow obstruction Sepsis and Septic ShockInfection → organ failure

🔥 Most-searched NCLEX cheat sheets

HypokalemiaK+ < 3.5 mEq/L HyperkalemiaK+ > 5.0 mEq/L Digoxin ToxicityDig level > 2.0 ng/mL Heart FailurePump fails → congestion HydralazineDirect arteriolar vasodilator MontelukastLeukotriene blocker → PREVENTION only TheophyllineNarrow range: 10-20 mcg/mL Desmopressin (DDAVP)Synthetic ADH → water retention HemophiliaX-linked, ↓ clotting factor Polycythemia Vera↑↑ RBCs → thick blood Fluid Volume Deficit (dehydration)Fluid loss > intake PheochromocytomaAdrenal tumor → catecholamine surge Multiple MyelomaPlasma cell cancer → bone + Ca↑ Pain Assessment (PQRST)Pain is what the patient says it is