Answer to Question 1
D
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Spinal anesthesia involves injecting the anesthetic agent into the cerebrospinal fluid, usually in the lumbar spine. It does not cause a significant decrease in level of consciousness.
Answer to Question 2
C
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Magnesium-based antacids are contraindicated in patients with renal failure. Magnesium-based antacids are not contraindicated with hypertension, regular heart rate, or stress ulcer.