Correct Answer: A

Rationale: The correct answer is 0.9% sodium chloride. Normal saline is 0.9% sodium chloride, which has the same osmolarity as blood and does not cause cell lysis. Choices 2 and 3, 5% dextrose in water solution and sterile water, are hypotonic solutions that can lead to cell lysis. Choice 4, Heparin sodium, is an anticoagulant and is not routinely used to flush an IV device before and after the administration of blood.

Correct Answer: B

Rationale: When assessing a client for signs of impending death, the nurse should observe for Cheyne-Stokes respiration. This pattern involves rhythmic waxing and waning of respirations from very deep breathing to very shallow breathing with periods of temporary apnea. It is often associated with cardiac failure and can be a significant indicator of impending death. Elevated blood pressure and pulse rate are not typical signs of impending death; in fact, they may indicate other conditions. A decreased temperature is also not a common sign of impending death, as temperature changes can vary among individuals and may not always correlate with the dying process.

Correct Answer: D

Rationale: A licensed practical nurse should not initiate a blood transfusion. LPNs can assist with transfusions and verify ID numbers but should not be assigned to initiate the procedure. Inserting Foley catheters, discontinuing nasogastric tubes, and obtaining sputum specimens are within the scope of practice for LPNs. Therefore, options A, B, and C are tasks that LPNs can perform, making them incorrect choices.

Correct Answer: B

Rationale: The correct answer is Protamine sulfate. Protamine sulfate is the antidote for heparin, as it reverses its effects. Cyanocobalamin is a form of Vitamin B12 and is not used to reverse heparin effects. Streptokinase is a thrombolytic agent that is used to dissolve blood clots, not to reverse heparin effects. Sodium warfarin is an anticoagulant, but it is not the antidote for heparin. Therefore, answers A, C, and D are incorrect as they do not reverse the effects of heparin.

Correct Answer: B

Rationale: When addressing suspected abuse, it is crucial to ask direct questions to determine the cause of injuries. Choice B is the most appropriate as it directly inquires about the possibility of someone grabbing the client's arms, which could indicate abuse. This question can help uncover potential abuse and provide necessary intervention. Choices A, C, and D are less direct and may not elicit the critical information needed to address abuse effectively. Clients often hesitate to report abuse due to feelings of shame and fear of retaliation, making a direct approach essential in such situations.