Correct Answer: C

Rationale: Septal involvement is a characteristic feature of hypertrophic cardiomyopathy, where the septal wall of the heart thickens. This thickening can obstruct blood flow out of the heart, leading to complications such as arrhythmias and heart failure. This differentiates it from other types of cardiomyopathy. In congestive cardiomyopathy (choice A), the heart's chambers become enlarged and weakened, but there is no specific mention of septal involvement. Dilated cardiomyopathy (choice B) involves dilation and impaired contraction of the heart chambers, not specifically septal thickening. Restrictive cardiomyopathy (choice D) is characterized by stiffening of the heart muscle, affecting its ability to fill properly, without direct involvement of the septum.

Correct Answer: C

Rationale: Left calf pain could indicate deep vein thrombosis (DVT), a serious side effect of oral contraceptives. Reporting this finding to the healthcare provider is critical for further evaluation and treatment. Breast tenderness and change in menstrual flow are common side effects of oral contraceptives and may not be as urgent as left calf pain. Weight gain of 5 pounds, while noteworthy, is not as concerning as a possible indication of DVT.

Correct Answer: A

Rationale: The correct answer is A: Clubbed nails. Clubbed nails are a significant finding often associated with chronic hypoxia or lung disease. The presence of clubbed nails should be documented for further evaluation. Splinter hemorrhages (Choice B) are tiny areas of bleeding under the nails and are associated with conditions like endocarditis. Longitudinal ridges (Choice C) are common and often a normal finding in older adults. Koilonychia or spoon nails (Choice D) refer to nails that are concave or scooped out, often seen in conditions like iron deficiency anemia or hemochromatosis. These conditions are not typically associated with chronic hypoxia or lung disease, making them less likely findings in this situation.

Correct Answer: A

Rationale: A low-grade fever on post-operative day three can be a sign of atelectasis, a common post-operative complication. Encouraging deep breathing and the use of the incentive spirometer can help prevent and treat this condition. Atelectasis is often due to shallow breathing, so option A is the best initial action to promote lung expansion. Administering antipyretic medication (option B) may help reduce the fever but does not directly address the underlying cause. Notifying the healthcare provider immediately (option C) is not necessary at this point unless other concerning symptoms are present. Increasing the client's fluid intake (option D) is important for overall recovery but is not the priority in this scenario.

Correct Answer: C

Rationale: Encouraging family presence is the most appropriate intervention for managing delirium in elderly patients. This intervention provides orientation, reassurance, and comfort, which can help reduce confusion and anxiety, thus aiding in managing delirium. Keeping the room brightly lit (Choice A) may worsen delirium as it can disrupt the patient's sleep-wake cycle. Administering sedatives (Choice B) should be avoided unless absolutely necessary due to the risk of worsening delirium. Restricting fluids (Choice D) is not a recommended intervention for managing delirium, as hydration is important for overall patient well-being.