Correct Answer: A

Rationale: A heart rate below 60 beats per minute is a contraindication for administering digoxin, as it can lead to bradycardia. Bradycardia is a common adverse effect associated with digoxin toxicity. Blood pressure of 140/90 mmHg, respiratory rate of 20 breaths per minute, and blood glucose level of 150 mg/dL are within normal limits and would not warrant withholding the medication or contacting the healthcare provider in this context. Therefore, a heart rate of 55 beats per minute would prompt the nurse to withhold digoxin and notify the healthcare provider.

Correct Answer: A

Rationale: In this scenario, the nurse should stand to the side of the patient's eye and observe the cornea. This action is crucial in assessing whether the patient wears contact lenses, especially in unresponsive patients. Observing the cornea can provide valuable information about the patient's eye health and potential use of contact lenses. Choices B, C, and D are incorrect. Concluding that the glasses were lost during the accident is premature without proper assessment. Notifying ambulance personnel about the missing glasses may not be the immediate priority, and asking the unresponsive patient about the glasses would not yield useful information in this situation.

Correct Answer: C

Rationale: The correct response is C: "At this age, children tend to become modest and value their privacy." During the developmental stage around 10 years old, children often start to value their privacy more and exhibit behaviors like closing doors when showering or dressing. It is a normal part of growing up and developing a sense of modesty. Choice A is incorrect as it suggests prying into the child's privacy, which may be counterproductive and invasive. Choice B is not the best response as it focuses on safety but fails to address the child's developmental stage and need for privacy. Choice D is also incorrect as it advocates for discipline without recognizing the normal developmental behavior of children at this age.

Correct Answer: B

Rationale: Passive ROM exercises should begin as soon as the patient loses the ability to move the extremity or joint. Initiating passive ROM early helps prevent contractures and maintain joint function. Choice A is incorrect because delaying passive ROM until after the acute phase may lead to irreversible contractures. Choice C is not the best option as waiting until the patient enters the rehab unit delays crucial preventive measures. Choice D is incorrect as passive ROM should not be based on patient requests but on clinical indications and best practices.

Correct Answer: D

Rationale: The correct answer is 'Upper arm circumference.' Upper arm circumference is a better indicator of total muscle mass in adolescents compared to height, weight, or triceps skinfold thickness. Triceps skinfold thickness primarily reflects subcutaneous fat, while weight and height are not specific to muscle mass. Upper arm circumference directly measures the muscle mass in the upper arm and can provide a more accurate assessment in this context. Therefore, choices A, B, and C are incorrect because they do not directly reflect total muscle mass in adolescents.