A nurse is assessing a client with chronic obstructive pulmonary disease (COPD). Which of the following findings would indicate the need for immediate intervention?

Choice A rationale
Nausea and vomiting can be caused by various conditions, including gastrointestinal issues and brain injuries, but they are not specifically indicative of a diffuse brain stem injury.
Choice B rationale
Nuchal rigidity, or neck stiffness, is a classic sign of meningeal irritation, often due to meningeal edema in conditions like meningitis.
Choice C rationale
Bilateral fixed and dilated pupils are more commonly associated with severe brain injury or increased intracranial pressure, not specifically a cerebellar brain attack.
Choice D rationale
Brudzinski’s sign is a physical exam finding indicative of meningeal irritation, commonly seen in bacterial meningitis, not specifically viral meningitis.

Choice A rationale
Hypokalemia can cause muscle weakness and cramps, but it does not typically lead to severe muscle spasms causing exhaustion. The patient’s symptoms of lethargy and weakness are more likely related to electrolyte imbalances and dehydration rather than muscle spasms.
Choice B rationale
While low potassium levels can affect cellular metabolism, the primary issue here is not glycolysis. The patient’s symptoms are more consistent with dehydration and electrolyte imbalances rather than a metabolic shift to glycolysis.
Choice C rationale
Hypokalemia can cause cells to become hyperpolarized, leading to muscle weakness and decreased reflexes. However, the patient’s symptoms of lethargy and weakness are more likely due to dehydration and electrolyte imbalances rather than cellular hyperpolarization.
Choice D rationale
Hypernatremia, or high sodium levels, can cause cellular dehydration, leading to symptoms such as lethargy and weakness. The patient’s lab results and clinical presentation are consistent with hypernatremia-induced cellular dehydration, which explains his symptoms.