Which disorder would the nurse suspect in a patient complaining of intense headaches, bloodshot eyes, and blurred vision? This is considered a medical emergency.

Choice A reason: Drinking large amounts of alcohol can relieve symptoms of essential tremor is false because essential tremor is a different neurological disorder from PD, and alcohol can worsen PD symptoms or interact with medications.

Choice B reason: Motor tremors and slow movement accompany severe cognitive impairment is false because not all people with PD develop cognitive impairment, and the severity of motor and cognitive symptoms may not correlate.

Choice C reason: It is advised to take levodopa-carbidopa on an empty stomach is true because food, especially protein, can interfere with the absorption of levodopa-carbidopa, which is the main medication for PD.

Choice D reason: Lewy body dementia (LBD) is the most common form of dementia is false because Alzheimer's disease is the most common form of dementia, and LBD is a related but distinct condition that can affect some people with PD.

Choice A reason: Constipation is the nurse's priority for preventive care, as it is a common and serious side effect of morphine and other opioids, which can slow down the bowel movements and cause hard, dry stools. The nurse would advise the older adult to increase their fiber and fluid intake, use stool softeners or laxatives as prescribed, and report any signs of bowel obstruction, such as abdominal pain, bloating, nausea, or vomiting.

Choice B reason: Poor liquid intake is not the nurse's priority for preventive care, as it is not directly related to the use of morphine, although it can contribute to constipation and dehydration. The nurse would advise the older adult to drink enough fluids, unless they have a fluid restriction, and to monitor their urine output, color, and specific gravity.

Choice C reason: Diarrhea is not the nurse's priority for preventive care, as it is not a common side effect of morphine, although it can occur in some cases due to an allergic reaction, intolerance, or overdose. The nurse would advise the older adult to report any episodes of diarrhea, as it can cause dehydration, electrolyte imbalance, or malabsorption.

Choice D reason: Poor solid food intake is not the nurse's priority for preventive care, as it is not directly related to the use of morphine, although it can affect the nutritional status and wound healing of the older adult. The nurse would advise the older adult to eat a balanced diet that meets their caloric and protein needs, and to avoid foods that can cause gas, indigestion, or constipation.