Correct Answer: A

Rationale: The correct answer is to administer fluids. In a patient experiencing shock, the priority is to address inadequate perfusion by restoring circulating blood volume. Administering fluids helps improve perfusion and oxygen delivery to vital organs. Monitoring blood pressure, providing oxygen, and calling for assistance are important steps but administering fluids is the initial and most critical intervention in the management of shock.

Correct Answer: D

Rationale: During a 12-lead ECG, the client needs to remain still to obtain accurate readings. Therefore, instructing the client to remain still is essential. Choices A, B, and C are incorrect because fasting is not necessary for an ECG, providing a warm blanket is not a standard procedure, and applying cold compresses may interfere with the ECG results.

Correct Answer: A

Rationale: The correct answer is A, dry mouth, and B, increased thirst are early indicators of dehydration. Dry mouth occurs when the body is dehydrated, and increased thirst is the body's way of trying to increase fluid intake to combat dehydration. Choices C and D, decreased urine output and dizziness, can be signs of severe dehydration but are not typically considered early indicators.

Correct Answer: B

Rationale: The absence of adventitious breath sounds indicates that furosemide is effective in managing heart failure. Adventitious breath sounds such as crackles indicate fluid accumulation in the lungs, a common complication of heart failure. Therefore, the absence of these abnormal sounds suggests that furosemide is effectively reducing fluid overload. Elevated blood pressure (choice A) is not a desired outcome in heart failure management. Weight gain (choice C) and decreased urine output (choice D) are signs of fluid retention and ineffective diuresis, indicating that furosemide is not working effectively.

Correct Answer: D

Rationale: Immunocompromised clients have weakened immune systems, making them more susceptible to infections. The pneumococcal polysaccharide vaccine is recommended for these individuals to help prevent pneumococcal infections, which can be severe and life-threatening. Varicella, Influenza, and Hepatitis B vaccines are not specifically indicated for immunocompromised clients. Varicella contains a live virus that can cause infections in immunocompromised individuals. Influenza is generally recommended for all individuals over 6 months of age but does not have the same priority as the pneumococcal vaccine for immunocompromised clients. Hepatitis B vaccine is crucial for preventing Hepatitis B infection but is not directly related to the increased infection risk faced by immunocompromised clients.