Correct Answer: D

Rationale: The correct answer is to instruct the client to monitor for signs of dehydration when taking Losartan. Losartan can lead to dehydration, so it is crucial for the client to watch out for symptoms like dry mouth, increased thirst, and reduced urine output. Monitoring for these signs can help prevent complications associated with dehydration while taking this medication.

Correct Answer: D

Rationale: The correct instruction for a client prescribed Losartan is to monitor for signs of dehydration. Losartan can lead to dehydration, so it is essential for the client to be vigilant for symptoms such as dry mouth, increased thirst, and decreased urine output. Providing this instruction ensures the client's safety and helps in early identification of any potential issues related to dehydration.

Correct Answer: D

Rationale: The correct answer is 'Orthostatic hypotension.' Amitriptyline can lead to orthostatic hypotension, a sudden drop in blood pressure when standing up, which can cause dizziness and increase the risk of falls. It is crucial for the nurse to monitor the client for signs of orthostatic hypotension, such as dizziness or lightheadedness when changing positions, and to educate the client to move slowly when transitioning from lying or sitting to standing.

Correct Answer: B

Rationale: The activated partial thromboplastin time (aPTT) is specifically used to monitor the effectiveness of heparin therapy. It should be maintained at 1.5 to 2 times the normal level. Monitoring aPTT helps ensure that the therapeutic range of heparin is achieved to prevent clot formation while minimizing the risk of bleeding complications.

Correct Answer: C

Rationale: The correct way to administer eye drops is by instructing the client to drop the prescribed amount of medication into the center of the conjunctival sac. This technique helps in proper distribution and absorption of the medication.