Correct Answer: A

Rationale: The correct answer is A. Standard precautions include wearing gloves when there is a potential for contact with blood or body fluids. Emptying a bedpan involves contact with bodily fluids, thus gloves are necessary to prevent exposure to pathogens. Choice B is incorrect because wearing a gown and protective eyewear is not necessary for obtaining a urine specimen via catheterization unless there is a risk of splashing or spraying of fluids. Choice C is incorrect as needles should always be disposed of in a proper sharps container with the cap secured to prevent accidental needlestick injuries. Choice D is incorrect because applying eyedrops does not involve contact with blood or body fluids, so wearing gloves is not necessary according to standard precautions.

Correct Answer: C

Rationale: The correct answer is C: Romberg’s test. Romberg’s test assesses a patient's ability to maintain balance with eyes closed, relying on proprioception from the lower limbs. A lumbar injury can affect proprioception, leading to impaired balance. Rhine’s test evaluates auditory function, not affected by a lumbar injury. Pupillary reaction assesses cranial nerve function, unrelated to a lumbar injury. The patellar reflex is a deep tendon reflex, primarily involving the spinal cord segments L2-L4, not directly affected by a lumbar injury.

Correct Answer: B

Rationale: The correct answer is B: heparin. Heparin is an anticoagulant used for immediate treatment of pulmonary embolism to prevent further clot formation. It acts quickly by inhibiting clotting factors. Warfarin (A) is used for long-term anticoagulation but has a slower onset. Dexamethasone (C) is a corticosteroid used for inflammation, not thrombosis. Protamine sulfate (D) is used to reverse the effects of heparin but is not indicated for initial treatment.

Correct Answer: C

Rationale: The correct answer is C: Eating. Chewing food can trigger trigeminal nerve pain due to the movement and pressure applied on the nerve. The other choices (A: Sleeping, B: Reading, D: Cooking) do not involve the same level of jaw movement and pressure on the trigeminal nerve, thus are less likely to aggravate the pain. Therefore, eating is the most likely action to worsen trigeminal neuralgia symptoms in this scenario.

Correct Answer: B

Rationale: The correct answer is B because the assessment findings of pericarditis, photosensitivity, polyarthralgia, and painful mucous membrane ulcers are classic manifestations of systemic lupus erythematosus (SLE). Pericarditis can present as chest pain aggravated by deep breathing or lying flat, photosensitivity refers to skin rashes triggered by sunlight exposure, polyarthralgia involves joint pain in multiple joints, and painful mucous membrane ulcers are common in the mouth or nose. These findings align with the diagnostic criteria for SLE. Choices A, C, and D are incorrect because they do not align with the typical presentation of SLE. Choice A includes facial erythema which is a common symptom, but the presence of profuse proteinuria, pleuritis, fever, and weight loss are not specific to SLE. Choices C and D include symptoms like weight gain, hypothermia, and edema which are not characteristic of SLE. In summary