Correct Answer: C

Rationale: The correct answer is C: Neutropenia. Chemotherapy can suppress bone marrow function, leading to a decrease in neutrophils (a type of white blood cell), causing neutropenia. This increases the risk of infection. Monitoring for signs of infection is crucial in patients receiving chemotherapy to prevent serious complications. Anemia (A) is a common side effect of chemotherapy but is not directly related to infection risk. Hyperkalemia (B) and hypocalcemia (D) are less likely to be immediate complications of chemotherapy compared to neutropenia.

Correct Answer: A

Rationale: The correct technique to determine the presence of crepitus during a physical examination is palpation. Crepitus is a crackling or grating sensation that is felt when there is air trapped in the subcutaneous tissue. Palpation involves using the hands to feel for abnormalities such as crepitus. Percussion involves tapping on the body to produce sounds that can help assess underlying structures, not to determine the presence of crepitus. Auscultation is listening to sounds within the body using a stethoscope, which is not relevant for detecting crepitus.

Correct Answer: A

Rationale: The correct answer is A: Encouraging early ambulation to prevent deep vein thrombosis. Early ambulation helps prevent blood clot formation in the legs, reducing the risk of deep vein thrombosis post-surgery. It also promotes circulation and aids in preventing complications like pneumonia. Administering pain medication (B) is important, but preventing complications should take priority. Providing wound care (C) is essential but not the top priority. Encouraging a high-protein diet (D) is beneficial for healing, but immediate post-operative mobility is crucial for preventing complications.

Correct Answer: A

Rationale: The correct answer is A: Administer antibiotics. Antibiotics are crucial in treating sepsis as they help to fight the underlying infection causing the condition. Administering antibiotics promptly can prevent the infection from spreading and worsening. Fluids (choices B and C) are important for treating sepsis to maintain blood pressure and support organ function, but antibiotics are the primary intervention to target the infection. Administering oxygen (choice D) may be necessary to support respiratory function in septic patients, but it is not the most effective action to address the underlying infection.

Correct Answer: A

Rationale: The correct answer is A because tolerance is a physiological phenomenon where the body adapts to a drug, requiring higher doses for the same effect. This is a common occurrence with opioids in chronic pain management. Choice B is incorrect as it refers to drug-seeking behavior, not tolerance. Choice C is incorrect because addiction and physical dependence are different concepts. Choice D is incorrect as it relates to a specific scenario of substance abuse alongside chronic pain, not the mechanism behind the need for increased opioid doses in chronic pain management.