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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A pneumothorax occurs when air collects in the pleural space, the area between the lung and the chest wall. Normally, this space has negative pressure that keeps the lung expanded. If air enters, the pressure changes, causing the lung to pull away from the chest wall and collapse. This reduces lung volume and impairs gas exchange. The impact depends on the amount of air present, any existing lung disease, and the pressure in the pleural space. At Liv Hospital, we see pneumothorax as a range from minor, symptom-free cases to severe, life-threatening emergencies that need immediate treatment.
To accurately define a pneumothorax, one must understand the delicate balance of pressures within the thoracic cavity. The pleural space typically contains a microscopic amount of fluid that lubricates the pleural surfaces.
The entry of air into this space implies a breach in either the visceral pleura (allowing air from the alveoli to leak out) or the parietal pleura (allowing atmospheric air to enter through a chest wall defect). This air effectively occupies the space that the lung parenchyma should occupy. As air accumulates, the lung is compressed. If the communication between the air source and the pleural space remains open, the lung will continue to collapse until the pressures equalize. If a one-way valve mechanism develops, air enters during inspiration but cannot escape during expiration, leading to a dangerous buildup of pressure known as tension pneumothorax.
Doctors classify pneumothorax into different types based on the cause, which helps decide how to treat it.
This type happens in people who do not have obvious lung disease. It is most common in tall, thin young men and is usually caused by the rupture of small air sacs (blebs or bullae) at the top of the lungs. These sacs can burst from pressure changes or on their own, letting air leak into the pleural space.
This type occurs as a result of existing lung disease. Conditions like COPD, cystic fibrosis, tuberculosis, lung cancer, or interstitial lung disease weaken the lungs and make air leaks more likely. Secondary spontaneous pneumothorax is usually more serious than the primary type because the patient already has less breathing capacity.
This type is caused by a direct injury to the chest. It can be from penetrating trauma, like stab or gunshot wounds, which create an open pneumothorax or ‘sucking chest wound.’ It can also result from blunt trauma, such as rib fractures in car accidents, which can tear the lung surface.
This form of traumatic pneumothorax happens during medical procedures. Procedures like central line placement, thoracentesis, lung biopsy, or mechanical ventilation can accidentally puncture the lung or pleura, causing air to leak.
Tension pneumothorax is the most dangerous type and is a medical emergency that needs immediate treatment to release the trapped air.
Pneumothorax is a global health concern, and its frequency depends on the type. Primary spontaneous pneumothorax happens in about 7-18 out of 100,000 men and 1-6 out of 100,000 women each year, mostly affecting people in their 20s. Secondary spontaneous pneumothorax is more common in older adults with lung diseases like COPD, especially those with a history of smoking. Traumatic pneumothorax rates reflect how often injuries and medical procedures occur. Knowing these patterns helps doctors at Liv Hospital assess risk and make accurate diagnoses.
Catamenial pneumothorax is a rare type that affects women.
Pneumothorax often comes back. After a first episode, the risk of having another is much higher than average—recurrence rates are between 30% and 50%, especially if the cause is not treated. This high risk affects whether doctors recommend surgery or a more conservative approach.
Send us all your questions or requests, and our expert team will assist you.
A pneumothorax is defined as the presence of air in the pleural cavity, the space between the lung and the chest wall, which can cause the lung to collapse due to loss of negative pressure.
Yes, the terms are often used interchangeably; pneumothorax is the medical term for the presence of air that results in the physical collapse of lung tissue.
Tension pneumothorax is a severe, life-threatening condition where air enters the chest cavity but cannot escape, building up pressure that compresses the heart and the opposite lung, leading to shock.
Yes, a small, simple pneumothorax might cause very mild or no symptoms, and it may only be discovered incidentally on a chest X-ray taken for another reason.
Primary spontaneous pneumothorax is often caused by rupture of small air blisters (blebs) at the top of the lungs, most often in tall, thin people without prior lung disease.
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