Correct Answer: C

Rationale: The correct instruction for the nurse to provide is to shake the inhaler before each use. Shaking the inhaler ensures proper mixing of the medication before administration, which is crucial for its effectiveness. Choice A is incorrect because albuterol inhalers are often used as a preventive measure, not just during asthma attacks. Choice B is a good practice to prevent oral fungal infections associated with inhaled corticosteroids, not typically with albuterol. Choice D is important for proper inhaler technique, but the primary step before inhaling is shaking the inhaler to ensure the medication is well mixed.

Correct Answer: C

Rationale: The correct answer is C: 'Gradual onset of dyspnea.' While pulmonary embolism can present with various symptoms, the most common include sudden onset of dyspnea, chest pain (often pleuritic in nature), tachypnea, and tachycardia. Bilateral leg swelling is more commonly associated with conditions like deep vein thrombosis, not pulmonary embolism. Decreased breath sounds on auscultation may be seen in conditions like pneumothorax, not typically in pulmonary embolism. Therefore, the gradual onset of dyspnea is the most indicative symptom of pulmonary embolism in this scenario.

Correct Answer: D

Rationale: A glucose level of 50 mg/dL is indicative of hypoglycemia, which requires immediate intervention to prevent further complications. Hypoglycemia can lead to serious consequences such as altered mental status, seizures, and even coma if not promptly addressed. The other options do not present immediate life-threatening conditions that require urgent intervention. Shortness of breath with a hemoglobin of 8 grams may indicate anemia but does not require immediate intervention. Bleeding from a finger stick with a prothrombin time of 30 seconds may suggest clotting issues, which are important but not as immediately critical as hypoglycemia. Being febrile with an elevated WBC count could indicate infection, which is concerning but not as urgently critical as hypoglycemia.

Correct Answer: B

Rationale: Encouraging increased fluid intake is the appropriate intervention to assist the client with pneumonia who is having difficulty expectorating thick secretions. Adequate hydration helps to thin the secretions, making them easier to cough up. Administering antibiotics (Choice A) is important for treating the infection itself but does not directly address the thick secretions. Chest physiotherapy (Choice C) may be beneficial in some cases but is not the initial intervention for thick secretions. Providing humidified oxygen (Choice D) can help with oxygenation but does not directly address the problem of thick secretions.

Correct Answer: C

Rationale: The correct answer is C: Positive urine ketones. In diabetic ketoacidosis (DKA), the body breaks down fat for energy due to a lack of insulin, leading to ketone production. Positive urine ketones are a hallmark laboratory finding in DKA as they directly reflect the presence of ketosis. Choice A, serum glucose of 180 mg/dL, may be elevated in DKA, but it is not specific to this condition. Choice B, blood pH of 7.30, often shows acidosis in DKA, but urine ketones are more specific to the presence of ketosis. Choice D, serum bicarbonate of 25 mEq/L, would typically be low in DKA due to acidosis rather than elevated.