CAT Exam Practice Test

Correct Answer: A

Rationale: By calculating the infusion rate based on the given chart information, the correct value is 42 ml/hr. This rate ensures proper fluid administration to the laboring client. Choices B (38), C (48), and D (50) are incorrect as they do not align with the calculated infusion rate needed for the client's condition, as per the chart data provided.

Correct Answer: B

Rationale: Assessing whether the client has a plan to act on the voices is critical for evaluating the risk of harm. Asking if the client is planning to obey the voices helps determine the immediate safety concerns. While understanding when the voices began could provide insight into the situation, assessing the intent to act on them is more urgent. Asking about hallucinogen use may be relevant but does not address the immediate safety issue. Inquiring about the client's belief in the reality of the voices is important but does not address the immediate risk of harm.

Correct Answer: A

Rationale: To calculate the volume to administer, use the formula: Desired dose (220,000 units) / Dose on hand (600,000 units) x Volume of the available dose (1 ml). This results in 0.4 ml to be administered. Choice A is correct. Choice B, C, and D are incorrect as they are not provided.

Correct Answer: A

Rationale: The correct answer is A: Fenestra vestibuli. The stapes footplate is placed into the fenestra vestibuli of the bony labyrinth. This structure is also known as the oval window and is located at the junction of the middle ear and inner ear. Choice B, Fenestra cochleae, is incorrect as this opening is also known as the round window and is located near the base of the cochlea. Choice C, Tympanic membrane, is incorrect as it is also known as the eardrum and separates the external ear from the middle ear. Choice D, Round window, is incorrect as it is the opening covered by the secondary tympanic membrane and is important for the dissipation of sound waves in the cochlea.

Correct Answer: B

Rationale: The correct answer is B: 'Impaired skin integrity related to altered circulation and pressure.' This nursing diagnosis is the most appropriate as it directly addresses the Stage II pressure ulcer on the left hip, which is caused by altered circulation and pressure due to the client's left-side paralysis. Choice A is incorrect because it focuses on the risk for impaired tissue integrity rather than the current issue of impaired skin integrity. Choice C is incorrect as ineffective tissue perfusion is not the primary issue in this scenario. Choice D is incorrect as it only addresses the left-side paralysis and not the pressure ulcer or altered circulation.