The nurse notes that the fall might also cause a possible head injury. The patient will be observed for signs of increased intracranial pressure which include:

Correct Answer: C

Rationale: Periorbital edema is a sign of increased intracranial pressure. It is caused by fluid accumulation around the eyes due to compromised drainage. Narrowing of the pulse pressure is more indicative of shock than increased intracranial pressure. While vomiting can be a sign of increased intracranial pressure, it is not as specific as periorbital edema. A positive Kernig's sign is associated with meningitis, not increased intracranial pressure.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Being in contact with reality and the environment is a function of the ego. The ego is responsible for mediating between the id's basic desires, the superego's idealistic standards, and the real world. The conscience (not listed as a choice) is related to feelings of guilt or moral responsibility. The id represents primal instincts, and the superego represents the internalized ideals and moral standards.

Correct Answer: A

Rationale: The correct answer is A: Red. In the medical field, tanks containing nitrous oxide (laughing gas) are typically color-coded with a specific color for easy identification. Nitrous oxide tanks are commonly labeled with a red color code. This color-coding system helps healthcare providers quickly and accurately identify the contents of the tanks, reducing the risk of errors in administering gases to patients. Choices B, C, and D are incorrect because the universally-accepted color for nitrous oxide tanks is red, not blue, green, or orange.