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Congrats Para! Good to see you!
Just wanted to add my .02cents to this very important conversation. According to TCCC (hence a tactical combat situation) you only need only two S/S to perform a needle decompression. 1. Mechanism of injury and 2. difficulty breathing are enough signs to initiate. Another S/S to look for is unilateral rise and fall of the chest if possible. In a combat situation it will be very difficult to determine increased tympani with percussion or decreased breath sounds with auscultation. And, as stated before tracheal deviation and JVD are late signs which may indicate a progression to deadly Vetricular Rhythms and cardiac collapse from cardiac compression.
Phil
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