Pneumothorax
A collapsed lung: when air where it shouldn’t be becomes a surgical emergency
What Happens in a Pneumothorax?
Types of Pneumothorax
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Principal Spontaneous Pneumothorax (PSP). Develops in healthy living persons without chronic lung disease. Usually is usually seen in young men who are tall and thin (1535) because of rupture of subpleural blebs (small air pockets) in the apex of the lungs. Large recurrence percentage, up to 50% following the first episode. |
Traumatic Pneumothorax Due to chest trauma, blunt, rib fracture, penetrating wounds, or iatrogenic (post-operative, mechanical ventilation). Frequently accompanied by haemothorax (blood in the pleural space). |
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Secondary Spontaneous Pneumothorax (SSP). Presents with background lung disease, COPD, emphysema, tuberculosis, asthma, cystic fibrosis, interstitial lung disease, or Langerhans cell histiocytosis. More severe due to reduced lung capacity. Needs to be handled more vigorously. |
Tension Pneumothorax A medical emergency. The accumulating air leads to compression of the heart and great vessels, which results in cardiovascular collapse. Decompression of the needle and a subsequent insertion of a chest tube are life-saving. |
Symptoms
The typical picture is the abrupt ipsilateral chest pain (sharp, pleuritic) and dyspnoea. Symptoms in primary spontaneous pneumothorax in young healthy patients are sometimes surprisingly mild. A small pneumothorax leads to severe respiratory distress in the case of secondary pneumothorax, where underlying lung disease is present due to damage to the remaining lung functioning capacity. Tension pneumothorax is associated with acutely developing breathlessness, hypotension, cyanosis, distended neck veins, tracheal deviation, a real emergency.
Diagnosis and Initial Management
The typical finding with chest X-ray is the lack of lung markings past the visceral pleural line, and a collapsed lung edge is present. CT chest gives accurate information about the size and underlying lung pathology (blebs, bullae, emphysema). The first management is based on the severity: observation in patients with small pneumothorax in a stable condition, needle removal or intercostal drainage in larger collapses, and emergency surgery in tension pneumothorax.
When is Surgery Needed?
Surgical Treatment: VATS Surgery
Pneumothorax can be treated using VATS surgery, which is easily tolerated, involves few small incisions, and the patient, in most cases, goes home in 2-3 days. VATS surgery has recurrence rates of less than 35% as opposed to more than 30% in simple drain-only surgery. Open thoracotomy is used after failed VATS, in cases of adhesions of various complexities, or both.
Special Situations
Recurrent Collapsed Lung?
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