Complex sentence: There is also the possibility that the cannula will not reach the pleural cavity due to a thick chest wall, especially in overweight individuals.ATLS states that needle decompression should be accomplished via a 4.5cm (2) to 5cm catheter.
Split into simpler sentences: There is also the possibility that the cannula will not reach the pleural cavity due to a thick chest wall, especially in overweight individuals. Traditionally needle decompression has been attempted using a 4.5cm (2) to 5cm catheter.