Pulmonology focuses on diagnosing and treating lung and airway conditions such as asthma, COPD, and pneumonia, as well as overall respiratory health.

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The Spectrum of Clinical Presentation

Pneumothorax can show up in many ways, from no symptoms at all to life-threatening heart and lung problems. The severity of the symptoms depends on the size of the air leak, how quickly it develops, and the patient’s lung health. Young, healthy people with a small pneumothorax may have only mild pain, while those with severe COPD can have serious breathing trouble even with a small amount of air. At Liv Hospital, we remain vigilant for sudden chest symptoms to ensure we diagnose a pneumothorax promptly.

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Chest Pain: Pleuritic and Sudden

PULMONOLOGY

Most people with pneumothorax report chest pain as their main symptom.

  • Onset: The pain is typically sudden in onset and sharp in nature. It is often described as a stabbing sensation.
  • Pleuritic Nature: The pain worsens with deep inspiration, coughing, or movement. This occurs because the inflamed parietal pleura is stretched or irritated.
  • Localization: The pain is usually localized to the side of the collapsed lung. However, it can sometimes radiate to the shoulder, neck, or back, mimicking musculoskeletal strain or even cardiac ischemia.
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Dyspnea and Respiratory Distress

PULMONOLOGY

Shortness of breath is the other main symptom of pneumothorax.

  • Mechanism: The collapse of the lung reduces the vital capacity and surface area available for gas exchange. This leads to ventilation-perfusion mismatch and hypoxemia.
  • Severity Correlation: The degree of breathlessness generally correlates with the size of the pneumothorax. However, in patients with pre-existing lung disease (secondary pneumothorax), dyspnea can be disproportionately severe even with a small volume of air.
  • Rapid Shallow Breathing: Patients often adopt a pattern of rapid, shallow breathing (tachypnea) to minimize chest wall movement and pain while maintaining oxygenation.

Signs of Tension Pneumothorax

It is crucial to spot the signs of tension pneumothorax quickly, since it needs immediate treatment even before any imaging is done.

  • Severe Hypotension: As intrathoracic pressure rises, venous return to the heart is obstructed, leading to a drop in blood pressure and shock.
  • Tracheal Deviation: The high pressure pushes the mediastinum to the opposite side, causing the trachea to deviate away from the side of the pneumothorax. This is a late and grave sign.
  • Distended Neck Veins: Jugular venous distention (JVD) occurs when blood flow returning to the heart is impaired.
  • Profound Hypoxia: Cyanosis (blue discoloration of lips and skin) and altered mental status may develop rapidly due to severe oxygen deprivation.
PULMONOLOGY

Physical Examination Findings

A careful physical exam can give important clues that a pneumothorax is present.

  • Decreased Breath Sounds: Auscultation typically reveals diminished or absent breath sounds on the affected side because the lung tissue is pulled away from the chest wall, blocking sound transmission.
  • Hyperresonance: Percussion of the chest wall produces a hyperresonant, drum-like sound over the area of air accumulation, contrasting with the normal resonance of a healthy lung.
  • Decreased Tactile Fremitus: When the patient speaks, the vibrations felt on the chest wall are reduced on the affected side.
  • Asymmetrical Chest Expansion: The affected side of the chest may move less than the healthy side during respiration.

Risk Factor: Body Habitus and Demographics

Certain body types make people more likely to develop primary spontaneous pneumothorax.

  • Tall and Thin: There is a well-documented association with a tall, asthenic body build. It is hypothesized that the rapid growth of the chest relative to the lung parenchyma during adolescence increases the mechanical stress at the lung apices, promoting the formation of subpleural blebs.
  • Gender and Age: Men are significantly more likely to be affected than women. The peak incidence occurs in the 20s.

Risk Factor: Smoking and Vaping

Smoking is the biggest risk factor for pneumothorax that people can change.

  • Tobacco Smoke: Current smokers have a markedly increased risk compared to non-smokers. The risk increases in a dose-dependent manner with the number of cigarettes smoked per day. Smoking causes inflammation and bronchiolitis, which can lead to air trapping and bleb formation.
  • Cannabis: Smoking marijuana involves deep inhalation and breath-holding (Valsalva maneuver), which can increase intra-alveolar pressure and rupture blebs.
  • Vaping: Emerging evidence suggests that e-cigarettes and vaping can also cause lung injury and inflammation, potentially predisposing to pneumothorax.

Underlying Lung Diseases

Secondary spontaneous pneumothorax is driven by pre-existing lung pathology.

  • COPD and Emphysema: The destruction of alveolar walls and formation of large bullae in emphysema create weak points in the lung that are prone to rupture.
  • Cystic Fibrosis: Thick mucus and chronic infection lead to air trapping and structural damage.
  • Lung Cancer: Tumors can erode into the pleural space or cause obstruction, leading to distal air trapping.
  • Interstitial Lung Disease: Conditions such as idiopathic pulmonary fibrosis or lymphangioleiomyomatosis (LAM) can cause cystic changes in the lung architecture.
  • Infections: Pneumocystis jirovecii pneumonia (PCP) in HIV patients and necrotizing bacterial pneumonia (e.g., Staphylococcus aureus) are known causes.

Mechanical Ventilation and Barotrauma

People on mechanical ventilators can develop pneumothorax from pressure or volume injuries caused by the machine.

  • High Pressures: Positive pressure ventilation forces air into the lungs. If the pressure is too high, alveoli can rupture, allowing air to dissect into the pleural space.
  • ARDS: Patients with Acute Respiratory Distress Syndrome (ARDS) often require high ventilatory pressures and have stiff, non-compliant lungs, increasing the risk.

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Assoc. Prof. MD. Engin Aynacı Assoc. Prof. MD. Engin Aynacı Pulmonology Overview and Definition
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FREQUENTLY ASKED QUESTIONS

What does pneumothorax pain feel like?

The pain is usually sharp, stabbing, and sudden, located on one side of the chest, and typically gets worse when you breathe in deeply or cough.

Yes, smoking tobacco or cannabis is the single most significant risk factor for spontaneous pneumothorax; it causes inflammation and damage that leads to the formation of weak air blisters.

Tall, thin men are at higher risk because the top of their lungs is subjected to greater mechanical stress during growth spurts, leading to the formation of blebs that can burst.

Stress itself does not directly cause a pneumothorax, but intense physical exertion or straining (like heavy lifting) can sometimes trigger a rupture if blebs are present.

Signs include severe shortness of breath, rapid heart rate, low blood pressure, distended neck veins, and tracheal deviation; this is a medical emergency requiring immediate help.

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