Correct Answer: A

Rationale: The correct answer is A: Vision changes. Tamoxifen can cause serious ocular side effects like retinopathy and corneal changes. These adverse reactions can lead to vision impairment or loss, which is crucial to report immediately to prevent permanent damage. Headache (B), hearing loss (C), and anorexia (D) are not typically associated with tamoxifen use and do not pose immediate threats to the client's health compared to vision changes. It is important for the nurse to prioritize educating the client on recognizing and reporting vision changes promptly to ensure timely intervention and prevent irreversible consequences.

Correct Answer: C

Rationale: The correct answer is C: Hematuria. Bacillus Calmette-Guerin (BCG) is a type of immunotherapy used to treat bladder cancer by stimulating the immune system to attack cancer cells. One common side effect of BCG instillations is hematuria, which is the presence of blood in the urine. This occurs because BCG irritates the bladder lining, leading to inflammation and bleeding. It is important for the nurse to educate the client about this potential side effect so they are aware and can report any excessive bleeding to their healthcare provider promptly. Other choices are incorrect: A: Renal calculi - BCG therapy is not known to cause renal calculi. B: Delayed ejaculation - BCG therapy is not associated with delayed ejaculation. D: Impotence - BCG therapy is not linked to impotence.

Correct Answer: D

Rationale: The correct answer is D because Huntington's disease is a neurodegenerative disorder that presents with a triad of symptoms: abnormal involuntary movements (chorea), intellectual decline, and emotional disturbances. Abnormal involuntary movements are a hallmark feature, while cognitive decline and emotional disturbances are also commonly observed. Therefore, all three manifestations are typically present in individuals with Huntington's disease. Choices A, B, and C are incorrect because each of these symptoms alone does not encompass the full spectrum of clinical manifestations seen in Huntington's disease.

Correct Answer: C

Rationale: The correct answer is C: Axon. The axon is the part of the neuron that transmits impulses away from the cell body towards other neurons or target cells. It is coated with a myelin sheath, which helps speed up the transmission of impulses. Dendrites (A) receive signals from other neurons, the neurolemma (B) is the outermost layer of the myelin sheath, and the synapse (D) is the junction between two neurons where neurotransmitters are released. Therefore, the axon is the only part of the neuron specifically responsible for transmitting impulses away from the cell body.

Correct Answer: D

Rationale: The correct answer is D because systemic lupus erythematosus can lead to inflammation in the lungs, causing abnormal lung sounds. Dysphagia (choice A) is not typically associated with lupus. Dryness or itching of genitalia (choice B) is more characteristic of conditions like yeast infections or dermatitis. Decreased visual acuity or blindness (choice C) is not a common manifestation of lupus. Abnormal lung sounds (choice D) are commonly seen in lupus patients due to inflammation and possible lung involvement.