The healthcare provider (HCP) prescribes dopamine 2 mcg/kg/min IV for client who weighs 60 kg. The IV bag contains "Dopamine 400 mg in dextrose 5% in water (DW) 500 mL." The nurse should program the infusion pump to deliver how many mL/hour? (Enter numerical value only.)
The Correct Answer is ["9"]
Calculation:
Calculate the dopamine dose in mcg/min:
Dose = 2 mcg/kg/min
Weight = 60 kg
Dose per minute = 2 mcg/kg/min × 60 kg
= 120 mcg/min
Calculate the dopamine dose in mcg/hour:
Dose per hour = 120 mcg/min × 60 min/hour
= 7200 mcg/hour
Convert mcg to mg:
Dose per hour = 7200 mcg/hour / 1000 mcg/mg
= 7.2 mg/hour
Calculate the concentration of dopamine in the IV bag:
Dopamine: 400 mg
Solution: 500 mL
Concentration = 400 mg / 500 mL
= 0.8 mg/mL
Calculate the infusion rate in mL/hour:
Dose per hour: 7.2 mg/hour
Concentration: 0.8 mg/mL
Infusion rate = 7.2 mg/hour / 0.8 mg/mL
= 9 mL/hour
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Obtain a chest x-ray to verify endotracheal tube location. A chest x-ray is the gold standard for confirming ETT placement, but it is not the first step. Immediate bedside assessment is needed to ensure the tube is correctly positioned before relying on imaging. If the tube is misplaced in the esophagus, waiting for an x-ray could delay necessary corrections.
B. Call the respiratory therapist (RT) to verify tube placement. The nurse should first perform a rapid bedside assessment before consulting the RT. While RTs assist in confirming placement, the nurse is responsible for the initial verification of breath sounds, chest rise, and end-tidal CO₂ (ETCO₂) readings. Any concerns should be addressed immediately.
C. Instill normal saline into the endotracheal tube for suctioning. Instilling saline before suctioning is not recommended, as it can promote aspiration, decrease oxygenation, and increase infection risk. The priority is confirming that the tube is properly placed before performing any interventions such as suctioning.
D. Auscultate for breath sounds bilaterally in all lung fields. The first action after ETT placement is to auscultate bilateral breath sounds to confirm proper tube positioning. If the tube is misplaced in the esophagus, breath sounds will be absent or diminished bilaterally. If placed too deep, breath sounds may be absent on one side, indicating mainstem bronchus intubation. This immediate assessment helps identify misplacement before obtaining a chest x-ray.
Correct Answer is A
Explanation
A. Apply high-flow oxygen by face mask. The client is in respiratory distress with absent breath sounds over the left lung field, which is highly suggestive of a pneumothorax or hemothorax. High-flow oxygen helps improve oxygenation while preparing for definitive intervention. In cases of tension pneumothorax, oxygen can help reduce hypoxia until a chest tube or needle decompression is performed.
B. Obtain a chest tube insertion kit. Absent breath sounds on one side following chest trauma strongly suggest a pneumothorax or hemothorax, requiring immediate chest tube placement to re-expand the lung and restore normal ventilation. The nurse should ensure that the equipment for thoracostomy (chest tube insertion) is readily available for the healthcare provider.
C. Withhold narcotic pain medication. Pain control is important in trauma patients, as uncontrolled pain can lead to shallow breathing, atelectasis, and respiratory complications. Narcotics should be used cautiously in clients with respiratory distress, but they are not contraindicated if given at appropriate doses with close monitoring.
D. Elevate the head of the bed 45 degrees. Clients with respiratory distress should be positioned with the head of the bed elevated to improve lung expansion. However, in a suspected pneumothorax, the priority is oxygenation and chest tube insertion. If there is hemodynamic instability, the client may require a flat or semi-Fowler’s position instead.
E. Place client in Trendelenburg position. The Trendelenburg position (head down, feet up) is not appropriate in chest trauma patients. This position can increase intra-abdominal pressure, worsen breathing difficulty, and impair lung expansion. It is typically avoided in clients with respiratory distress or suspected pneumothorax.
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