Final answer:
The signs and symptoms of hypermagnesemia toxicity include hypotension, facial flushing, muscle weakness, absent deep tendon reflexes, and shallow respirations.
Step-by-step explanation:
The signs and symptoms of hypermagnesemia toxicity include:
 
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- Hypotension: low blood pressure
 
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- Facial flushing: redness of the face
 
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- Muscle weakness: decreased strength in muscles
 
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- Absent deep tendon reflexes: no response to tapping on the tendons with a reflex hammer
 
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- Shallow respirations: breathing that is not deep