Correct Answer: A

Rationale: Administering oxygen is the best intervention for a patient experiencing respiratory distress because it helps improve oxygenation and alleviate respiratory distress. Oxygen therapy is crucial in ensuring that the patient receives an adequate supply of oxygen to meet the body's demands. Administering bronchodilators (Choice B) may be beneficial in specific respiratory conditions like asthma or COPD but may not be the primary intervention in all cases of respiratory distress. Administering IV fluids (Choice C) may be necessary in cases of dehydration or shock but would not directly address respiratory distress. Providing chest physiotherapy (Choice D) can help mobilize secretions in conditions like cystic fibrosis but is not the first-line intervention for respiratory distress.

Correct Answer: B

Rationale: Muscle weakness is a common finding in clients with hypokalemia, as potassium is essential for proper muscle function. Diarrhea (choice A) is more commonly associated with hyperkalemia rather than hypokalemia. Hypertension (choice C) is not typically a direct result of low potassium levels. Bradycardia (choice D) is more commonly associated with hyperkalemia, not hypokalemia.

Correct Answer: A

Rationale: The correct answer is to place the client in a negative pressure room. This action is necessary to prevent the spread of tuberculosis, as it is transmitted via airborne particles. Placing the client in droplet isolation (choice C) is not sufficient for tuberculosis, as it requires airborne precautions. Wearing a surgical mask (choice B) when entering the client's room may not provide adequate protection against airborne transmission. Placing a surgical mask on the client when transporting them (choice D) does not address the need for environmental controls to contain infectious particles.

Correct Answer: C

Rationale: The correct intervention for a client with deep vein thrombosis (DVT) is to apply cold packs to the affected extremity. Cold packs help reduce swelling and pain by causing vasoconstriction. Massaging the affected extremity could dislodge a clot, leading to serious complications. Encouraging bed rest may increase the risk of clot propagation, while frequent ambulation is contraindicated as it can dislodge clots.

Correct Answer: A

Rationale: The correct answer is to administer anticoagulants. Anticoagulants help prevent further clot formation in patients with suspected DVT. Encouraging ambulation can be beneficial in preventing DVT but is not the immediate intervention for a suspected case. Compression stockings are more for DVT prevention rather than treatment. Monitoring oxygen saturation is important in assessing respiratory function but is not the primary intervention for suspected DVT.