Patient with acute aspiration of bloody secretions.Prior to administering sedation and neuromuscular blockade i checked the mac 4 laryngoscope to confirm it was functional.When lifting in valecula with laryngoscope, light bulb would become too dim to see every time there was pressure on the blade.I had a second blade in the room, but it was not my preferred shape.Instead had someone hand me another mac 4 laryngoscope from the airway cart which was positioned at the door to the room.This one worked appropriately.As a result, patient desaturate to sat of 50s, instead of low 80s where we were when i was ready to intubate with the first laryngoscope.I suspect he also had greater volume aspirated into lungs.This is the second time i have experienced this malfunction with this device.
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