The nurse is assessing a patient who has been diagnosed with multiple sclerosis (MS).

Which of the following findings is most consistent with this condition?

The correct answer is D.

Delirium.

The nurse should monitor the client for delirium, which is a state of acute mental confusion that can be caused by fever, infection, dehydration, or medications.

Delirium can affect the client’s cognition, attention, orientation, memory, and behavior.It can also increase the risk of falls, complications, and mortality.

Choice A is wrong because dehydration is not a complication of fever, but rather a possible cause of fever.

Dehydration occurs when the body loses more fluid than it takes in, and it can impair the body’s ability to regulate its temperature.Dehydration is more common and dangerous in older adults because they have a lower volume of water in their bodies, a weaker thirst response, and may have conditions or medications that increase fluid loss.

Choice B is wrong because hypothermia is not a complication of fever, but rather a condition of abnormally low body temperature.

Hypothermia can occur when the body loses heat faster than it can produce it, such as in cold weather or water exposure.Hypothermia can affect the brain, heart, and other organs, and can lead to death if not treated promptly.

Choice C is wrong because seizures are not a common complication of fever in older adults.

Seizures are sudden episodes of abnormal electrical activity in the brain that can cause changes in movement, sensation, behavior, or consciousness.

Seizures can have various causes, such as head injury, stroke, infection, or epilepsy.

Fever-induced seizures are more likely to occur in young children than in older adults.

The correct answer is A.

Adverse drug reactions.

Polypharmacy, which refers to the effects of taking multiple medications concurrently to manage coexisting health problems, is common among older adults.

It is defined as the regular use of at least five medications.

Polypharmacy can lead to an increase in geriatric syndromes, decrease in functional outcomes, and increased mortality.

One of the major risks of polypharmacy is adverse drug reactions, which are harmful or unintended effects of a medication that occur at normal doses.

Adverse drug reactions can result from drug-drug interactions, drug-disease interactions, drug-age interactions, or inappropriate prescribing.

Adverse drug reactions can cause symptoms such as confusion, dizziness, falls, bleeding, or organ damage.

They can also lead to hospitalizations, increased health care costs, and reduced quality of life.

Choice B is wrong because medication adherence, which is the extent to which patients take medications as prescribed by their health care providers, can actually decrease with polypharmacy.

This is because taking multiple medications can be complex, costly, and burdensome for older adults, especially if they have cognitive impairment or low health literacy.

Medication adherence can also be influenced by patients’ beliefs, preferences, and expectations about their medications.

Choice C is wrong because drug-drug interactions are not a risk of polypharmacy per se, but rather a cause of adverse drug reactions.

Drug-drug interactions occur when two or more drugs affect each other’s pharmacokinetics (absorption, distribution, metabolism, excretion) or pharmacodynamics (mechanism of action, efficacy, toxicity).

Drug-drug interactions can alter the therapeutic effects or safety of a medication.

Choice D is wrong because therapeutic effects are the intended or desired effects of a medication that benefit the patient’s health condition.

Therapeutic effects can decrease with polypharmacy due to drug-drug interactions that reduce the efficacy of a medication.

Therapeutic effects can also be diminished by prescribing cascade, which is a phenomenon where a new medication is prescribed to treat a symptom that is actually an adverse drug reaction of another medication.

Normal ranges for blood pressure are.

≤120/80.

mmHg for normal,.

120−129/80.

mmHg for elevated,.

130−139/80−89.

mmHg for stage 1 hypertension, and.

≥140/90.

mmHg for stage 2 hypertension.