Correct Answer: B

Rationale: The correct answer is asking, "Did someone grab you by your arms?"? This question is direct and addresses the possibility of abuse, which is crucial when dealing with suspected abuse cases. It is important to ask direct questions in a sensitive and non-accusatory manner to gather information. Choice A is too general and may not prompt a disclosure of abuse. Choice C assumes falling as the cause without addressing abuse directly. Choice D is vague and does not specifically inquire about potential abuse, making it less effective in identifying abuse cases compared to the correct choice.

Correct Answer: B

Rationale: The correct answer is 'the child being shaken.' Children who are shaken are frequently grasped by both upper arms, leading to bruises in that area. The presentation of a difficult-to-awaken child with bruises on the upper arms is highly concerning for non-accidental trauma, such as abusive shaking. Symptoms of brain injury associated with shaking include a decreased level of consciousness. Choices A, C, and D are less likely because the combination of a child being difficult to awaken and bruises on both upper arms is highly suggestive of non-accidental trauma rather than benign causes like ill-fitting clothing, falling while learning to walk, or parents trying to awaken the child.

Correct Answer: D

Rationale: The correct answer is the use of coping skills and verbalization for anger management. Social support systems involve external sources of support from others or the community. Call-in help lines, emotional assistance provided by others, and community support groups all represent social support systems where individuals can seek help and assistance from outside sources. On the other hand, the use of coping skills and verbalization for anger management refers to individual strategies rather than external social support.

Correct Answer: A

Rationale: Alkylating agents, such as nitrogen mustards, are effective chemotherapeutic agents because they cross-link DNA strands with covalent bonds between alkyl groups on the drug and guanine bases on DNA. This cross-linking interferes with DNA replication and transcription, leading to cell death. Choice B is incorrect because alkylating agents have numerous side effects, including alopecia, nausea, vomiting, and myelosuppression. Choice C is incorrect because while nitrogen mustards are used to treat multiple types of cancer like chronic lymphocytic leukemia, non-Hodgkin's lymphoma, and breast and ovarian cancer, their effectiveness is primarily due to DNA cross-linkage. Choice D is incorrect because alkylating agents are non-cell-cycle-specific agents, meaning they can act on cells in any phase of the cell cycle, not just on cells that are actively dividing.

Correct Answer: A

Rationale: The correct statement is that fat emulsions have a high energy-to-fluid-volume ratio. Fat emulsions are formulated in 10%, 20%, and 30% solutions and supply 1.1, 2, and 3 kilocalories, respectively, for each milliliter. In comparison, a milliliter of 5% dextrose only supplies 0.17 kilocalories. Choices B, C, and D are incorrect. Choice B is false because fat emulsions are essentially pH neutral and isotonic, not hypertonic. Choice C is incorrect because fat emulsions are not basic solutions; they are essentially pH neutral. Choice D is incorrect as fat emulsions are not alkaline; they are pH neutral, making them compatible with most medications.