Registered Practical Nurse (RPN) Practice Test

What is an identified risk factor for delirium?

1. Electrolyte imbalance

2. Age over 65

3. Chronic illness

4. Recent surgery

The correct answer is: Electrolyte imbalance

An identified risk factor for delirium that stands out is electrolyte imbalance. This condition can significantly affect brain function, leading to confusion and altered mental status, which are characteristic symptoms of delirium. Electrolyte imbalances may occur due to various reasons such as dehydration, kidney dysfunction, or medical treatments, and they can disrupt normal neuronal signaling in the brain. Consequently, monitoring and correcting electrolyte levels is crucial in preventing or managing delirium, especially in vulnerable populations. While age over 65, chronic illness, and recent surgery are also important factors that can contribute to the risk of developing delirium, electrolyte imbalances specifically have a direct and immediate impact on cognitive function, making them a critical consideration in assessment and care.