Tension Pneumothorax Management

Recognition and Diagnosis

Tension pneumothorax occurs when intrapleural pressure exceeds atmospheric pressure throughout the respiratory cycle, creating a one-way valve effect that draws air into the pleural space during inspiration but prevents its escape during expiration 1, 2
Clinical presentation includes rapid, labored respiration, cyanosis, sweating, tachycardia, progressive respiratory distress, and hypoxemia 1, 2, 3
The American Thoracic Society recommends suspecting tension pneumothorax in patients on mechanical ventilation or non-invasive ventilation who suddenly deteriorate or develop pulseless electrical activity (PEA) 1

The British Medical Journal recommends immediate needle decompression with a cannula of adequate length (at least 4.5 cm) inserted into the second intercostal space in the mid-clavicular line, followed by chest tube placement 4, 1
The British Medical Journal suggests preparing equipment, including a cannula of adequate length (at least 4.5 cm long, minimum 14-gauge) and identifying the insertion site, which is typically the second anterior intercostal space in the mid-clavicular line 1, 3
The American College of Chest Physicians recommends performing needle decompression by inserting the cannula perpendicular to the chest wall and advancing it fully to the hub, then holding the needle/catheter unit in place for 5-10 seconds before removing the needle 1, 2
The British Medical Journal recommends leaving the decompression cannula in place until bubbling is confirmed in the underwater seal system, confirming proper function of the intercostal tube 1, 3
The British Medical Journal suggests connecting the chest tube to an underwater seal drainage system 5, 1

The British Medical Journal recommends obtaining a chest radiograph to confirm tube position and lung re-expansion 5, 6
The British Medical Journal suggests providing adequate analgesia and monitoring vital signs and respiratory status 5, 6
The American Thoracic Society recommends assessing for persistent air leak or complications 5, 6

The American College of Chest Physicians recommends avoiding delay in treatment while waiting for radiographic confirmation, as tension pneumothorax is a clinical diagnosis requiring immediate intervention 1, 3
The British Medical Journal suggests avoiding the use of needles that are too short, as chest wall thickness often exceeds 3 cm, making standard needles ineffective 1
The American Thoracic Society recommends avoiding removal of the decompression cannula before a functioning chest tube is in place 1, 3

Tension pneumothorax occurs when intrapleural pressure exceeds atmospheric pressure throughout the respiratory cycle, creating a one-way valve effect that traps air in the pleural space, and should be particularly suspected in patients on mechanical ventilation or non-invasive ventilation who suddenly deteriorate 7

Insert a cannula of adequate length (minimum 4.5 cm, preferably 7 cm) into the second intercostal space in the mid-clavicular line to reduce failure rates by approximately 7.76% per cm of additional length, as recommended by the American Thoracic Society 7, 8
Recent meta-analysis data suggests a 7 cm needle may be more appropriate as it reduces failure rates, and chest wall thickness often exceeds 3 cm in 57% of patients, making standard shorter needles ineffective 8
Leave the decompression cannula in place until a chest tube is inserted and functioning properly, with proper function confirmed by observing bubbling in the underwater seal system 7

The 5th intercostal space along the midaxillary line (5MAL) may be considered for right-sided tension pneumothorax, and for left-sided cases, the 2nd intercostal space along the midclavicular line (2MCL) is safer due to potential risk of cardiac injury with lateral approaches, as suggested by the European Respiratory Society 8

Patients on positive pressure ventilation who develop pneumothorax should always receive tube thoracostomy as positive pressure maintains the air leak, according to the American College of Chest Physicians 7

Attenuated or absent breath sounds on the affected side are a key diagnostic feature of tension pneumothorax, according to the Military Medical Research guidelines 9

The Military Medical Research guidelines recommend using a 7-8 cm needle (minimum 4.5 cm, 14-gauge) for immediate needle decompression, inserted at the 2nd intercostal space in the midclavicular line 9
The American Thoracic Society, as published in Chest, suggests using a small-bore catheter (≤14F) or 16-22F chest tube for most patients, and a 24-28F tube only if large bronchopleural fistula or positive-pressure ventilation is required 10
The British Medical Journal recommends providing adequate analgesia post-insertion, as part of the standard care for patients undergoing chest tube insertion 11

The Military Medical Research guidelines recommend repeat needle decompression or proceeding to tube thoracostomy if tension physiology recurs, with close monitoring for recurrence as 32% of patients require subsequent intervention after initial needle decompression 9