Final answer:
The number one danger in both Myasthenic and Cholinergic crisis is respiratory failure, caused by muscle weakness that can lead to paralysis of the respiratory muscles.
Step-by-step explanation:
The #1 danger in both Myasthenic and Cholinergic crisis is respiratory failure. These conditions are medical emergencies that arise from complications of the neuromuscular disorder myasthenia gravis. In a Myasthenic crisis there is an underactivity of the neurotransmitter acetylcholine while in a Cholinergic crisis there is an overactivity due to an excess of acetylcholine usually because of excessive medication. Both crises result in muscle weakness that can lead to respiratory failure due to paralysis of the respiratory muscles.