Correct Answer: A

Rationale: AST, choice A, would be the least effective in diagnosing a myocardial infarction as it is not specific for this condition. Troponin, CK-MB, and myoglobin (choices B, C, and D) are more specific markers for myocardial infarction. Troponin is considered the gold standard due to its cardiac specificity. CK-MB is also specific to the heart, and its isoenzyme levels elevate post-heart damage. Myoglobin, although elevated in myocardial infarction, is not as specific as troponin and CK-MB and can also increase in conditions like burns and muscle trauma. Therefore, AST is the least effective choice for diagnosing a myocardial infarction.

Correct Answer: C

Rationale: The correct answer is 'severe anxiety.' In severe anxiety, a person focuses on small or scattered details and is unable to solve problems. The client's symptoms of rapid speech, trembling hands, tachypnea, tachycardia, elevated blood pressure, feeling nervous, and having trouble sleeping indicate severe anxiety. Mild anxiety enhances the ability to learn and solve problems, while moderate anxiety narrows the perceptual field but allows the client to notice things brought to their attention. During a panic attack, a person is disorganized, hyperactive, or unable to speak or act, which is not the case in this scenario.

Correct Answer: A

Rationale: The correct answer is 'Fraud.' Identifying oneself as a nurse without a license defrauds the public and can lead to prosecution. A tort is a wrongful act in breach of a legal duty imposed by law; malpractice is the failure to act appropriately as a nurse or acting in a way that harm comes to the client; and negligence is failing to perform care. In this scenario, the key issue is the misrepresentation of licensure status, which constitutes fraud. Therefore, choices B, C, and D are incorrect.

Correct Answer: C

Rationale: Covering both eyes with paper cups is the correct action as it helps prevent consensual movement of the affected eye. Attempting to remove the object with a magnet might cause trauma, making choice A incorrect. While rinsing the eye with saline may be necessary, it should be ordered by a doctor and is not the initial action for the nurse, making choice B incorrect. Administering eye drops immediately, as in choice D, is not appropriate in this scenario and does not address the primary concern of preventing further damage by limiting eye movement.

Correct Answer: C

Rationale: A sitz bath is an effective method for managing discomfort associated with an episiotomy after discharge. It helps reduce swelling and promotes healing in the perineal area. Ice packs (option D) are typically used immediately after delivery to provide pain relief. Promethazine (option A) and aspirin (option B) are not indicated for managing discomfort associated with an episiotomy. Promethazine is an antihistamine, and aspirin is a nonsteroidal anti-inflammatory drug, both of which are not commonly used for this purpose.