I too am a C5/6 incomplete quad that had pneumonia. I dove into our pool from the patio roof. The impact with the water snapped my neck. I sucked water all the way to the bottom. Had to be trached upon arrival at hospital and remained that way for all the time I was in ICU. When moved to Rehab, that was the first to go. I breathe just fine even though I only use the upper lobes. Good Luck, mark