Correct Answer: A

Rationale: Administering aspirin is the most appropriate intervention for a client experiencing a heart attack. Aspirin helps prevent blood clot formation, which is crucial in reducing further damage to the heart during a heart attack. It inhibits platelets from clumping together, improving blood flow to the heart muscle. Thrombolytics are used to dissolve existing blood clots, but aspirin is more preventive. Monitoring for arrhythmias is important but not the initial intervention. Administering morphine can be considered for pain relief but is not as crucial as administering aspirin to prevent further clot formation.

Correct Answer: B

Rationale: The correct answer is B: Encourage fluid intake. Adequate hydration helps in pain management by promoting circulation and reducing inflammation. Opioids (choice A) should only be used if non-pharmacological interventions fail. Administering oxygen (choice C) is not typically indicated for pain management. Monitoring electrolyte levels (choice D) is important but not the most immediate intervention for acute pain post-surgery.

Correct Answer: A

Rationale: The correct answer is A: Administer nitroglycerin. This is the priority intervention because nitroglycerin helps dilate blood vessels, reducing chest pain in clients with heart disease. It improves blood flow to the heart, relieving ischemia. Morphine (B) can mask symptoms and should be used if pain persists after nitroglycerin. Beta blockers (C) are beneficial in chronic management but not for immediate relief. Aspirin (D) helps prevent clot formation but is not the priority in acute chest pain.

Correct Answer: B

Rationale: The correct answer is B: Administer thrombolytics. Thrombolytics help dissolve blood clots, which may be causing the stroke. Administering thrombolytics promptly can improve blood flow to the brain, potentially reducing the severity of the stroke and its effects, including difficulty speaking. Calling for help (A) is important, but administering thrombolytics should be a priority. Performing a CT scan (C) may help confirm the type of stroke but may delay immediate treatment. Administering bronchodilators (D) is not indicated for difficulty speaking related to stroke.

Correct Answer: A

Rationale: The correct answer is A: Administer aspirin. Aspirin helps prevent further clot formation by inhibiting platelet aggregation, reducing the risk of additional heart damage. It is a standard treatment in acute myocardial infarction. Administering morphine (B) may be considered for pain relief but is not the primary intervention. Monitoring vital signs (C) is important, but not the primary intervention. Administering fibrinolytics (D) is indicated in certain cases but is not the primary intervention and requires specific criteria and caution.