Order: Magnesium Sulfate 1 gram in 100mLs 0.09% NaCl over 2 hours. IV tubing has a drop factor of 30 gtt/mL. How many drops per minute will you give?
25 gtt/min
1500 gtt/min
50 gtt/min
83 gtt/min
The Correct Answer is C
A. 25 gtt/min: Calculating the correct rate reveals that this is not the correct answer.
B. 1500 gtt/min: This rate is too high; the calculation does not support this answer.
C. 50 gtt/min: To calculate: (100 mL / 120 min) × 30 gtt/mL = 50 gtt/min.
D. 83 gtt/min: This is too high based on the calculation.
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Correct Answer is B
Explanation
A. Obtain a blood sample. Although obtaining a blood sample is essential for cardiac enzyme levels, it is not the highest priority. Addressing oxygenation takes precedence to relieve hypoxia.
B. Initiate oxygen therapy. Oxygen is the first priority to improve oxygenation in a client showing signs of hypoxia (cyanosis, dyspnea), which can prevent further ischemic damage to the heart.
C. Attach the leads for a 12-lead ECG. While obtaining an ECG is essential for diagnosing myocardial ischemia, ensuring oxygenation is more critical in this moment.
D. Insert the IV catheter. An IV line is necessary to administer fluids and medications, but oxygenation should be prioritized first to stabilize the client.
Correct Answer is C
Explanation
A. Advise the client to come into the office. The client needs immediate emergency intervention, not a routine office visit.
B. Advise the client to take an antacid. Chest pain unrelieved by nitroglycerin may indicate myocardial infarction; an antacid would not help.
C. Instruct the client to call 911. Persistent chest pain unrelieved by nitroglycerin warrants emergency attention due to potential heart attack.
D. Tell the client to take another nitroglycerin tablet in 15 min. The protocol allows taking an additional dose in 5 minutes, but emergency services should be called for unrelieved chest pain.