Correct Answer: A

Rationale: The correct answer is A: Administer oxygen. In hypovolemic shock, the body lacks adequate circulating blood volume leading to decreased tissue perfusion and oxygen delivery. Administering oxygen helps increase oxygen saturation levels and improve tissue oxygenation. This is the priority nursing action to ensure the client's vital organs receive sufficient oxygen. Administering pain relief (B) may be necessary but is not the priority in hypovolemic shock. Administering beta blockers (C) can further decrease blood pressure and worsen the condition. Monitoring for bleeding (D) is important, but administering oxygen takes precedence to address the immediate oxygenation needs of the client.

Correct Answer: A

Rationale: The nurse should first administer aspirin to a client with chest pain as it helps prevent blood clot formation during a possible heart attack. Aspirin inhibits platelet aggregation, reducing the risk of further blockage in the coronary arteries. Administering aspirin promptly can improve the client's outcomes. Performing an ECG, monitoring vital signs, or providing a meal plan are important but should come after administering aspirin in the initial management of chest pain to prioritize the client's safety and well-being.

Correct Answer: B

Rationale: The correct answer is B: Vitamin B12. Strict vegetarians, especially those who exclude all animal products, are at risk of Vitamin B12 deficiency as it is primarily found in animal products. Vitamin C (A) deficiency is more common in those with poor fruit and vegetable intake. Vitamin E (C) deficiency is rare and usually seen in individuals with specific medical conditions. Magnesium (D) deficiency can occur in individuals with poor dietary intake or certain medical conditions, but it is not the primary concern for strict vegetarians.

Correct Answer: A

Rationale: The correct answer is A: coma. High ammonia levels can lead to hepatic encephalopathy, causing impaired brain function and potentially leading to coma. Edema (B) is typically associated with fluid retention, not high ammonia levels. Hypoxia (C) is a condition of low oxygen levels, not directly related to high ammonia levels. Polyuria (D) is excessive urination, which is not a common sign of high ammonia levels.

Correct Answer: A

Rationale: The correct answer is A: Administer bronchodilators. During an acute asthma attack, the priority intervention is to immediately open the airways to improve breathing. Bronchodilators, such as albuterol, work rapidly to dilate the bronchioles and relieve bronchospasms, making it the most effective initial treatment. Corticosteroids (B) are used for long-term control, not immediate relief. Applying oxygen and administering albuterol (C) is close, but bronchodilators should be given first for quicker relief. Applying a cold compress (D) is not appropriate for managing an asthma attack.