Correct Answer: B

Rationale: The correct answer is 'pharmacodynamic.' Pharmacodynamics pertain to the effect of a drug on receptors, explaining how drugs affect tissues. Pharmaceutical reactions refer to chemical reactions between drugs before administration or absorption, not their effect on tissues. Pharmacokinetic reactions involve how the body affects the drug, not the tissue. Drug incompatibilities are essentially pharmaceutical reactions, not the specific effects on tissues seen in pharmacodynamic reactions.

Correct Answer: B

Rationale: Crying is a regressive behavior. The ego returned to an earlier, comforting, and less-mature way of behaving in the face of disappointment. Regression involves reverting to an earlier stage of development to cope with stress or conflict. In this scenario, the nurse regressed to a childlike state by crying when faced with the disappointment of not getting the promotion, demonstrating regression as a defense mechanism. Conversion involves transforming anxiety into a physical symptom. Introjection involves unconsciously identifying intensely with another person. Rationalization involves unconsciously creating acceptable explanations to justify unacceptable ideas, actions, or feelings. Therefore, the correct answer is regression as it aligns with the nurse's behavior of regressing to a childlike state by crying due to the disappointment of not receiving the promotion.

Correct Answer: D

Rationale: A complication of a tonsillectomy is bleeding, and constant swallowing may indicate bleeding. Decreased appetite is expected after a tonsillectomy, as is a low-grade fever; thus, answers A and B are incorrect. Chest congestion, as mentioned in answer C, is not typical of tonsillectomy complications, making it an incorrect choice.

Correct Answer: B

Rationale: The correct answer is 'individuals with psychiatric disorders' increased susceptibility to substance abuse.' It is crucial to inquire about substance abuse during admission to an acute-care psychiatric unit because individuals with psychiatric disorders are more prone to experiencing substance abuse issues. Addressing substance abuse is vital for effective treatment and to prevent relapse in psychiatric disorders. Option A is incorrect as it focuses on the prevalence of psychiatric illness in addicted populations rather than the relationship between psychiatric disorders and substance abuse. Option C is incorrect as it exaggerates the ease of detecting and diagnosing substance disorders in acute-care psychiatric settings. Option D is incorrect as undetected substance problems can indeed significantly impact the treatment of psychiatric disorders, but the main reason for inquiring about substance abuse is the increased susceptibility of individuals with psychiatric disorders to such issues.

Correct Answer: D

Rationale: The correct answer is to inform the patient that they will have to lie down on their back during the MRI. This positioning is necessary for the scan to obtain accurate images of the brain. Choice A is incorrect because the decision on the positioning during the MRI is typically determined by the imaging protocol and not subject to negotiation during the test. Choice B is incorrect as the reverse Trendelenburg position is not commonly used during MRI scans. Choice C is incorrect because the radiologist does not usually make decisions on patient positioning during the MRI; it is predetermined by the imaging requirements.