Correct Answer: A

Rationale: The correct answer is A: Administer oxygen. Oxygen administration is the first intervention for shock as it helps improve oxygenation to vital organs. Lack of oxygen can worsen shock. Administering IV fluids (choice B) could be the second step to improve perfusion. Monitoring respiratory rate (choice C) is important but not the first intervention. Administering pain medication (choice D) is not a priority in managing shock.

Correct Answer: A

Rationale: The correct answer is A: Administer nitroglycerin. Nitroglycerin is the recommended initial medication for chest pain in a client with a history of myocardial infarction. It helps dilate blood vessels, improving blood flow to the heart, and reducing chest pain. Aspirin (choice B) is also usually given to reduce blood clot formation, but nitroglycerin is the priority for immediate relief. Morphine (choice C) may be used if nitroglycerin is ineffective, and beta blockers (choice D) are typically used for long-term management of heart conditions, not for immediate relief of chest pain.

Correct Answer: A

Rationale: The correct answer is A because tolerance is a physiological phenomenon where the body adapts to a drug, requiring higher doses for the same effect. This is a common occurrence with opioids in chronic pain management. Choice B is incorrect as it refers to drug-seeking behavior, not tolerance. Choice C is incorrect because addiction and physical dependence are different concepts. Choice D is incorrect as it relates to a specific scenario of substance abuse alongside chronic pain, not the mechanism behind the need for increased opioid doses in chronic pain management.

Correct Answer: A

Rationale: The correct answer is A: Administer antibiotics. Peritonitis is an inflammation of the peritoneum often caused by infection. Administering antibiotics is crucial to combat the infection. It is important to treat the underlying cause first before focusing on symptom management. Administering analgesics (B) may provide temporary relief but won't address the infection. Applying an ice pack (C) is not appropriate for peritonitis as it won't treat the infection. Performing a laparotomy (D) is a surgical procedure that may be necessary in severe cases but is not the initial nursing action.

Correct Answer: D

Rationale: The correct answer is D: Level of consciousness and cognitive abilities. In this scenario, the individual is experiencing delirium due to fluid and electrolyte imbalance, which can affect his level of consciousness and cognitive abilities. Assessing these aspects is crucial in determining the severity of the condition and guiding appropriate interventions. Option A (Affect and mood) is incorrect as the primary concern is the individual's cognitive functioning. Option B (Memory and affect) is incorrect as it does not cover the assessment of consciousness. Option C (Thought processes and memory) is incorrect as it does not specifically address the evaluation of the individual's level of consciousness.