CCRN Critical Care Nursing

Answer: D - The neurotransmitter that is found to be in low levels in patients with Alzheimer's disease is Acetylcholine. Alzheimer's disease changes the brain in many ways. One of the changes results in a decrease in the levels of acetylcholine, a chemical messenger that's believed to be important for alertness, memory, thought and judgment. Cholinesterase inhibitors are a type of drug that improves the effectiveness of acetylcholine either by increasing the amount of it in the brain or by enhancing nerve cells' response to it.