A client with bleeding esophageal varices receives vasopressin intravenously (IV). Which adverse effect should the nurse monitor for during the IV infusion of this medication?

Choice A rationale:

The combination of trimethoprim and sulfamethoxazole has a synergistic effect, which means that the two drugs work together to inhibit bacterial growth more effectively than either drug alone. This combination is commonly used to treat urinary tract infections (UTIs) caused by susceptible bacteria.

Choice B rationale:

The combination of trimethoprim and sulfamethoxazole does not have an additive effect that reduces the dosage and frequency of administration of each drug. Instead, it is prescribed as a fixed combination with specific dosages of each drug.

Choice C rationale:

The combination of trimethoprim and sulfamethoxazole does not have an antagonistic effect that prevents the development of resistance to either drug. In fact, the combination is chosen because it covers a broader spectrum of bacteria and reduces the likelihood of resistance development.

Choice D rationale:

The combination of trimethoprim and sulfamethoxazole does not have a selective effect that targets only the bacteria causing the UTI and spares the normal flora. It affects a wide range of bacteria, including both pathogenic and normal flora.

Choice A rationale:

An altered level of consciousness is not a typical finding in Alzheimer's disease. This condition is characterized by cognitive decline and memory impairment, but consciousness itself is not directly affected.

Choice B rationale:

Rapid mood swings can occur in individuals with Alzheimer's disease due to the changes in brain structure and function. These mood swings are a common behavioral symptom. However, the more distinctive hallmark of Alzheimer's disease is the cognitive decline rather than mood swings.

Choice C rationale:

Excessive motor activity is not a prominent feature of Alzheimer's disease. Instead, individuals with Alzheimer's disease often experience a decline in motor skills and coordination as the disease progresses.

Choice D rationale:

Failure to recognize familiar objects is a common symptom of Alzheimer's disease. This is referred to as agnosia, where individuals may struggle to recognize familiar people, objects, or places. It results from the progressive damage to brain regions responsible for memory and sensory processing.