Correct Answer: A

Rationale: The correct first action for the nurse to implement is to cleanse the foot with soap and water and apply an antibiotic ointment to prevent infection. In cases of puncture wounds like stepping on a rusty nail, the immediate concern is to reduce the risk of infection. Providing teaching about the need for a tetanus booster within the next 72 hours is important as well, but it should come after the wound is cleansed. Checking the child's temperature and transferring to the emergency department for a gamma globulin injection are not the immediate priorities in this scenario.

Correct Answer: A

Rationale: In this scenario, the nurse should first evaluate the oxygen saturation. This action is crucial as it provides immediate information on the client's respiratory status. Assessing the oxygen saturation can help determine the adequacy of oxygenation and guide further interventions. Administering a bronchodilator (Choice B) may be necessary based on assessment findings, but it should not be the first action without knowing the oxygen saturation level. While assisting the client to sit upright (Choice C) is generally beneficial for respiratory function, in this case, assessing oxygen saturation takes precedence. Encouraging slow, deep breathing (Choice D) can be helpful, but it is secondary to evaluating the oxygen saturation in this situation.

Correct Answer: C

Rationale: The correct answer is C. Crackles in the lungs indicate fluid overload, a common issue in heart failure patients. Immediate intervention is necessary to prevent worsening heart failure symptoms and potential complications. A heart rate of 60 beats per minute and a blood pressure of 100/60 mmHg are within normal ranges for many individuals and do not typically require immediate intervention in this context. The presence of a new murmur may be important to monitor but is not the priority when crackles in the lungs suggest fluid overload.

Correct Answer: B

Rationale: The correct answer is B. Weight gain of 2 pounds in 24 hours is concerning in a client with rheumatoid arthritis on prednisone as it may indicate fluid retention or worsening heart failure. Increased joint pain, blood glucose level of 150 mg/dl, and fever of 100.4°F are important assessments but do not require immediate intervention compared to the potential severity of rapid weight gain.

Correct Answer: C

Rationale: The correct answer is C, 'Stroke secondary to hemorrhage.' Uncontrolled hypertension can lead to the weakening of blood vessels in the brain, increasing the risk of a stroke due to hemorrhage. This can result in serious neurological deficits or even death. Choices A, B, and D are incorrect because while hypertension can have various complications including vision changes, kidney damage, and heart problems, the most immediate and severe risk associated with uncontrolled hypertension is a stroke from cerebral hemorrhage.