Correct Answer: A

Rationale: The correct answer is A: Muscle rigidity and spasms. Ketamine can cause muscle rigidity and spasms as a side effect, especially at higher doses. This is a known adverse reaction to Ketamine administration. Monitoring for muscle rigidity and spasms is important to ensure the safety of the client during and after surgery. Incorrect choices: B: Hiccups - Hiccups are not a common side effect of Ketamine administration. C: Extrapyramidal reactions - Ketamine is not known to cause extrapyramidal reactions. D: Respiratory depression - Ketamine typically does not cause respiratory depression, which is more commonly associated with other anesthetics like opioids. Therefore, choice A is the correct answer as it aligns with the known side effects of Ketamine.

Correct Answer: A

Rationale: The correct answer is A: Epinephrine. In anaphylaxis, epinephrine is the medication of choice due to its rapid onset of action and ability to reverse severe allergic reactions. It acts by constricting blood vessels, increasing heart rate, and opening airways. This helps counteract the dangerous drop in blood pressure and airway constriction seen in anaphylaxis. Digoxin, theophylline, and furosemide are not appropriate for anaphylaxis as they do not address the immediate life-threatening symptoms of anaphylaxis.

Correct Answer: B

Rationale: The correct answer is B because optimum sleep helps regulate breathing patterns during an EEG. Waking the client at midnight allows them to have a full night's rest, ensuring they are well-rested and their breathing is stable for accurate EEG results. Choice A is incorrect as excess sleep does not affect nervousness. Choice C is incorrect as waking the client does not help them fall asleep naturally during the EEG. Choice D is incorrect as headache prevention is not directly related to waking the client at midnight.

Correct Answer: A

Rationale: Step-by-step rationale for why answer A is correct: 1. Positive reinforcement helps enhance communication skills in individuals with expressive aphasia. 2. Providing positive feedback when Mr. Reyea uses words correctly encourages him to continue trying to communicate. 3. It boosts his confidence and motivation, leading to improved verbal communication over time. Summary of why other choices are incorrect: B. Waiting indefinitely for Mr. Reyea to verbally state his needs may lead to frustration and hinder effective communication. C. Suggesting permanent help at home assumes Mr. Reyea's condition cannot improve, which is not necessarily true for expressive aphasia. D. Helping the family accept Mr. Reyea's communication challenges does not actively support his communication improvement and may limit his progress.

Correct Answer: B

Rationale: The correct answer is B: 2.0mEq/L. Severe vomiting can lead to hypokalemia, characterized by flat T waves and ST segment depression on ECG. This is due to decreased potassium levels affecting cardiac repolarization. A potassium level of 2.0mEq/L is dangerously low and consistent with the ECG findings in this scenario. Choices A, C, and D have potassium levels that are not reflective of severe hypokalemia, therefore they are incorrect. Option A (4.0mEq/L) is within the normal range, option C (8.0mEq/L) is elevated, and option D (2.6mEq/L) is higher than the correct value of 2.0mEq/L.