The physician recommends a carotid endarterectomy for a client with atherosclerosis and a history of transient ischemic attacks (TIAS). The nurse explains that this procedure involves:

A. Using a cold compress is typically employed for reducing swelling or discomfort, but it does not address the visual deficits associated with homonymous hemianopia. This intervention would not assist the client in compensating for their visual field loss.
B. Teaching scanning techniques involves training the client to actively search for visual information from their affected side. This can include turning their head and using their eyes to scan to the left (for right homonymous hemianopia) or to the right (for left homonymous hemianopia). This compensatory strategy is crucial for helping the client navigate their environment safely and effectively during rehabilitation.
C. Applying an eye patch is not appropriate for homonymous hemianopia, as it may further limit visual input. In fact, patching could exacerbate difficulties by reducing overall vision and is generally more relevant for conditions like amblyopia or for treating diplopia (double vision), rather than compensating for a visual field deficit.
D. Using eye drops is typically for treating dry eyes, redness, or other ocular conditions, and does not directly address the issues related to homonymous hemianopia. This intervention would not help the client learn to compensate for their visual field loss.

A. This statement is not advisable. While it is essential to avoid strenuous activity initially, gentle arm exercises and range-of-motion activities are generally encouraged as soon as possible to promote circulation and help prevent lymphedema. Immobilization can actually increase the risk of lymphedema.
B. This intervention is not recommended for preventing lymphedema. Sleeping on the side of the surgery (in this case, the left side) can put pressure on the affected arm and may not promote proper lymphatic drainage. Clients are often advised to sleep on their back or to position themselves in a way that does not compress the affected arm.
C. This intervention can provide temporary relief if there is swelling or discomfort, but it does not effectively prevent lymphedema. While cool compresses might help reduce inflammation, they are not a primary measure for lymphedema prevention.
D. This is the most effective intervention for preventing lymphedema. Elevating the affected arm helps facilitate lymphatic drainage and reduces the risk of fluid accumulation. Keeping the arm elevated above heart level encourages proper circulation and helps manage swelling.