Correct Answer: B

Rationale: The correct answer is B: Purplish discoloration of hands and feet. Hand-foot syndrome in sickle cell anemia is characterized by pain, swelling, and purplish discoloration of the hands and feet due to vaso-occlusive crisis. Unequal growth of fingers and toes (A), webbing between fingers and toes (C), and deformities of wrists and ankles (D) are not typical findings associated with hand-foot syndrome in sickle cell anemia.

Correct Answer: C

Rationale: The correct answer is C: Non-mobile mass with irregular edges delineated. This finding strongly suggests cancer as non-mobile masses with irregular edges are characteristic of malignant tumors. Cancerous lumps tend to be fixed in place due to involvement of surrounding tissues. Irregular edges indicate potential invasive growth. Choices A and B describe characteristics more commonly associated with benign masses. Eversion of the nipple is concerning for cancer but not specific enough to strongly suggest malignancy. Choice D indicates absence of lymph node involvement, which is not directly related to the characteristics of the breast lump.

Correct Answer: A

Rationale: The correct answer is A: Norepinephrine. Norepinephrine is the primary neurotransmitter that mediates the sympathetic response. It is released by sympathetic nerve endings and acts on adrenergic receptors in various target organs to initiate the "fight or flight" response. Prostaglandin, acetylcholine, and serotonin do not directly mediate the sympathetic response and are involved in different physiological processes.

Correct Answer: B

Rationale: The correct answer is B: Turn on the affected side. This position helps to promote the closure of the puncture site in the lung, reducing the risk of fluid leakage and pneumothorax. Placing the client flat in bed (A) may not allow gravity to assist in the closure of the puncture site. Turning on the unaffected side (C) may not effectively prevent fluid leakage from the puncture site. Bed rest (D) is a general instruction and does not specifically address the prevention of fluid leakage after thoracentesis.

Correct Answer: B

Rationale: The correct answer is B: Focused assessment. In this scenario, the nurse is continuously monitoring specific aspects such as vital signs, pupils, and orientation at regular intervals, which is characteristic of a focused assessment. This type of assessment allows the nurse to gather specific data related to the client's condition and respond promptly to any changes. A: Initial assessment is conducted upon admission to establish baseline data. C: Time-lapsed reassessment involves comparing current data to previous assessments over a longer period. D: Emergency assessment is performed in urgent situations to quickly identify life-threatening issues. By systematically assessing the client's vital signs, pupils, and orientation at frequent intervals, the nurse can provide timely and appropriate care in the intensive care unit setting.