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NCLEX-RN cheat sheet · Respiratory

Pneumonia, TB and chest tubes

Pneumonia, TB skin tests, drugs and isolation, flu, pneumothorax, the drainage system, chest tube emergencies

AI-checkedChecked by AI against current guidelines, with spot-checks by a registered nurse.

Spot lung infections early and stop them from spreading. With a chest tube, know what each bubble means.

At a glance

Pneumonia

  • An acute infection that fills the air sacs with fluid or pus, from bacteria, viruses or fungi.
  • Types: community, hospital, ventilator, aspiration. Aspiration risks: trouble swallowing, an impaired gag reflex, oversedation, heavy alcohol or drug use.
  • Cough, sometimes with purulent sputum; breathlessness; chest pain on breathing; fast breathing; fine crackles; falling saturation; fast pulse; fever with shaking chills; new confusion.
  • Chest X-ray shows consolidation; white cells rise; a sputum culture names the organism.

Pneumonia care

  • Treat the cause: antibiotics for bacteria, adjusted by the culture, or antivirals or antifungals.
  • Oxygen to keep the saturation in range, usually above 92%; fever medicine as ordered.
  • Coach coughing, deep breathing and the incentive spirometer; use infection control.
  • Teach clients to finish the antibiotic course.
  • Adult pneumococcal vaccine: routine from age 50, risk-based if younger, timed by prior vaccines.

TB: latent or active

Latent (inactive) TBActive TB disease
SymptomsNo symptomsWarning signs: a cough of 3 weeks or more, chest pain, bloody sputum, weight loss, fever, night sweats
SpreadIsn't contagiousAirborne, when someone with active TB of the lungs or throat coughs, speaks or sings; germs can stay in the air for hours
In hospitalAirborne precautions: a private negative-pressure room, door closed; staff wear a fit-tested N95 or higher-level respirator; the client wears a surgical mask to leave the room

Evaluate sooner: A cough of 3 weeks or more is a warning symptom, not a required duration: evaluate sooner when risk or symptoms warrant. Risks: close contact with TB, HIV or weak immunity, substance misuse, a high-TB region, homelessness, crowded settings like prisons.

Reading the TB skin test

IndurationPositive for
5 mm or moreHIV, recent contacts of TB, weakened immunity
10 mm or morePeople from high-TB countries, group settings, labs
15 mm or moreNo known risk

Skin test: 0.1 mL of PPD given intradermally in the inner forearm. A trained reader reads it at 48 to 72 hours; a missed window means repeating it. Measure the induration in mm, not the redness.

After a positive test

  • Positive means TB germs are present, not that the disease is active: a chest X-ray and sputum tests decide that.
  • After the BCG vaccine, a blood test is preferred; the vaccine can make the skin test positive.
  • A sputum smear is fast; a sputum culture confirms active TB, but takes weeks. TB is reported to public health.
  • Close contacts are tested; teach cough etiquette and tissue disposal.

TB drugs

What to know
RegimenFour drugs (isoniazid, rifampin, ethambutol, pyrazinamide) is one regimen for drug-susceptible active TB; selected clients can take a 4-month rifapentine-moxifloxacin regimen
The courseFinish the course, even when well: stopping early risks relapse and resistance. Directly observed therapy supports that
IsoniazidCan damage the liver: report nausea, dark urine or yellow skin
RifampinTurns body fluids orange: an expected effect
EthambutolCan affect vision, so vision is checked

Influenza and other viruses

  • Flu: fever, fatigue, body aches, cough, sore throat, headache. RSV: cough and wheezing, hardest on infants. Rhinovirus: the common cold.
  • Influenza needs droplet precautions: a mask on entering the room, and a private room when available.
  • Antivirals like oseltamivir work best started within 1 to 2 days of symptoms, and are recommended promptly for hospitalized and high-risk clients, even after 2 days (pregnancy, asthma, chronic lung disease, diabetes, heart disease). They're not antibiotics.

Pneumothorax

  • Air around the lung is a pneumothorax; blood is a hemothorax. Part or all of the lung collapses.
  • Spontaneous: no known cause, or lung disease like COPD. Traumatic: a chest wound, rib fracture or procedure.
  • Sudden sharp chest or shoulder pain, worse with a breath or cough; short of breath; decreased or absent breath sounds on that side.
  • Tension pneumothorax is an emergency: blood can't return to the heart, and the pressure drops. The trachea may shift only late: escalate at once so decompression isn't delayed.

Routine chest tube care

  • Shift start: check the orders and suction level; baseline vital signs, saturation, lung sounds, breathing effort, trachea position.
  • Dressing dry and intact. Crepitus, a crackling under the skin, means air has leaked into the tissue.
  • Keep the tubing free of kinks and tape the connections; never strip it.
  • Don't clamp routinely: it can cause a tension pneumothorax. For transport, don't clamp; disconnect the suction.

The drainage system

ChamberWhat it doesWhat you should see
CollectionHolds the drainageMeasure it; mark the level with the date and time
Water sealLets air out but not back in. Wet units commonly use sterile water to 2 cm; dry and digital ones differTidaling (water rising and falling with breathing): the tube is open. Continuous bubbling: an air leak. No tidaling: a kink, a blockage, or the lung has re-expanded
Suction controlRuns only when ordered, at the ordered level, like -20 cm H2OA wet system bubbles gently and continuously

Keep it: Upright and below the chest, on a stable surface or hung on the bed. A trained operator chooses a safe insertion site, usually the triangle of safety.

Problems and emergencies

  • Report drainage that is cloudy, stops in the first day, or passes the ordered limit (rule of thumb: over 200 mL an hour). In trauma, report an initial output over 1,500 mL.
  • Emergency help for sudden worse breathlessness, a saturation under 90%, or a shifted trachea. A fast pulse with low pressure can mean a tension pneumothorax.
  • Tube comes out: stay, send for help, assess. Cover the site at once with a sterile occlusive dressing, follow the local pleural-drain protocol, and never reinsert the old tube.
  • Disconnected tubing or a cracked unit: follow the current local and device procedure. Unit tipped over: set it upright, check the water seal.
  • Removal: prescribed pain medicine about 30 minutes before; no clamping first; breathe in deeply and hold as it comes out.

Priority and safety calls

  • ★ Suspected active TB: airborne isolation first, a negative-pressure room and fit-tested N95 or higher-level respirators for staff.
  • ★ The chest tube comes out as he turns in bed: cover the site at once with a sterile occlusive dressing, stay, get help, follow the protocol.
  • Stab wound, fast pulse, falling pressure, shifted trachea: tension pneumothorax.
  • Chest tube for a hemothorax draining 250 mL each hour: notify the provider. It is past the ordered limit (rule of thumb: over 200 mL an hour).

How the NCLEX tests it

  • TB: latent isn't contagious; active is airborne.
  • Skin test: read at 48 to 72 hours, measure induration, and use 5, 10 or 15 mm by risk.
  • Traps: measuring redness, calling a positive test active disease, stopping TB drugs early.
  • Tidaling is good; constant water-seal bubbling is a leak.
  • Traps: clamping for transport, stripping the tube, raising the unit above the chest, reinserting a dislodged tube.

Practice it next

This sheet comes from Pneumonia, tuberculosis and respiratory infections and Chest trauma, pneumothorax and chest tubes in our NCLEX-RN course. Try free practice questions, or see the lessons it was written from.

Free NCLEX practice questionsThe NCLEX-RN course

Quick self-quiz

  1. Read a TB skin test at 48 to ___ hours.
    Show answer72
  2. With no known risk, the skin test is positive at ___ mm or more.
    Show answer15
  3. Rifampin turns body fluids ___.
    Show answerorange
  4. Continuous bubbling in the water seal suggests an air ___.
    Show answerleak
  5. Rule of thumb: report drainage over ___ mL an hour.
    Show answer200

Sources

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Educational use only. This sheet is a study aid for the NCLEX-RN, not a substitute for clinical judgment, your facility’s policy or the provider’s orders. Where practice varies, follow facility policy and state law. NCLEX® and NCLEX-RN® are registered trademarks of NCSBN, which does not endorse these materials.