Correct Answer: A

Rationale: To calculate the rate needed to deliver 4 mg/minute of Lidocaine, first, convert 2 grams to milligrams: 2 grams = 2000 mg. Then, set up a ratio between the total amount of Lidocaine (2000 mg) and the total volume of IV solution (500 mL): 2000 mg / 500 mL = 4 mg / x mL. Solving for x, x = 1 mL. Since the infusion pump delivers 60 microdrops per mL, multiplying by 60 microdrops/mL gives the correct rate of 60 microdrops/minute. This rate ensures the desired 4 mg of Lidocaine is delivered per minute. Choices B, C, and D are incorrect as they do not align with the accurate calculation based on the provided information.

Correct Answer: A

Rationale: To calculate the rate needed to deliver 4 mg/minute of Lidocaine, first, convert 2 grams to milligrams: 2 grams = 2000 mg. Then, set up a ratio between the total amount of Lidocaine (2000 mg) and the total volume of IV solution (500 mL): 2000 mg / 500 mL = 4 mg / x mL. Solving for x, x = 1 mL. Since the infusion pump delivers 60 microdrops per mL, multiplying by 60 microdrops/mL gives the correct rate of 60 microdrops/minute. This rate ensures the desired 4 mg of Lidocaine is delivered per minute. Choices B, C, and D are incorrect as they do not align with the accurate calculation based on the provided information.

Correct Answer: D

Rationale: The correct answer is to start an IV in the other arm. In this scenario, the patient is showing signs of Acute Compartment Syndrome, a serious condition that occurs due to increased pressure within a muscle compartment, leading to decreased blood flow and potential tissue damage. Starting an IV is crucial as the patient may require emergency surgery, such as a fasciotomy, to relieve the pressure and prevent further complications. Placing the patient in a supine position, asking about pain levels, or wrapping the fractured area, though important, are not the priority interventions in this critical situation where immediate medical intervention is necessary to prevent irreversible damage or loss of limb.

Correct Answer: B

Rationale: Encouraging range of motion and ambulation is an effective preventive measure for deep vein thrombosis in post-surgical clients. Mobility helps improve blood circulation, reducing the risk of clot formation. Elastic stockings help prevent blood pooling and clotting in the legs by providing external pressure to support venous return. Massaging the legs twice daily may help with circulation but is not as effective as promoting movement and ambulation. Placing pillows under the knees is a comfort measure and does not directly address the prevention of deep vein thrombosis.

Correct Answer: D

Rationale: The correct answer is 'The infant received mechanical ventilation for 2 weeks.' Bronchopulmonary dysplasia is a condition primarily caused by therapies like positive-pressure ventilation used in the treatment of lung disease. This leads to lung damage and subsequent respiratory problems. Choices A, B, and C are not consistent with the diagnosis of bronchopulmonary dysplasia. Gestational age assessment suggesting growth retardation is more indicative of intrauterine growth restriction, clearing meconium from the airway at delivery is related to potential respiratory issues at birth, and phototherapy for Rh incompatibility is unrelated to bronchopulmonary dysplasia.