The diaphragm is the main inspiratory muscle, and diaphragmatic weakness can lead to respiratory failure. Diaphragmatic weakness or paralysis commonly presents in association with more generalised neuromuscular disorders. However, it can be caused by other pathologies, such as trauma, compression, infection and inflammation [1]. Isolated diaphragmatic palsy (DP) is well-described [2], but often missed in adults [3], especially in bilateral diaphragmatic palsy (BDP) where both domes of the diaphragm are elevated.

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