Which of the following clients would the nurse question an order for labetalol 50 mg PO?
28 year old woman with pregnancy-induced hypertension
Pizza delivery driver with 5 year history of smoking
Client with a history of uncontrolled asthma
55 year old male who had a myocardial infarction 2 days ago
The Correct Answer is C
Choice A reason: This is incorrect because labetalol is a safe and effective medication for treating hypertension in pregnancy. Labetalol is a beta-blocker that lowers blood pressure by reducing the heart rate and the force of contraction. It does not affect the blood flow to the placenta or the fetus.
Choice B reason: This is incorrect because labetalol is not contraindicated for smokers. However, smoking is a risk factor for cardiovascular disease and should be discouraged by the nurse. Smoking can increase blood pressure, heart rate, and the risk of blood clots.
Choice C reason: This is correct because labetalol is contraindicated for clients with a history of uncontrolled asthma. Labetalol is a non-selective beta-blocker that can block the beta-2 receptors in the lungs and cause bronchoconstriction. This can worsen asthma symptoms and trigger an asthma attack.
Choice D reason: This is incorrect because labetalol is a suitable medication for clients who had a myocardial infarction. Labetalol can prevent further damage to the heart muscle by reducing the oxygen demand and the workload of the heart. It can also prevent arrhythmias and angina.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["83"]
Explanation
To calculate the IV flow rate in drops per minute, we can use the following formula:
IV flow rate (gtt/min) = (Volume to be infused in mL drop factor) / Time in minutes
Given:
Volume to be infused = 250 mL
Drop factor = 10 gtt/mL
Time = 30 minutes
Using the formula:
IV flow rate = (250 mL 10 gtt/mL) / 30 min
IV flow rate ≈ (2500 gtt) / 30 min
IV flow rate ≈ 83.33 gtt/min
Rounding to the nearest whole number, the nurse should set the manual IV flow rate to deliver 83 gtt/min.
Correct Answer is ["125"]
Explanation
To calculate the rate at which the nurse should set the IV pump to deliver dextrose 5% in 0.45% sodium chloride over 24 hours, we can use the following steps:
Given:
Total IV fluid volume: 3 L
Infusion duration: 24 hours
Step 1: Convert the total IV fluid volume from liters (L) to milliliters (mL)
Total volume = 3 L × 1000 mL/L
Total volume = 3000 mL
Step 2: Calculate the rate of infusion per hour
Rate = Total volume / Infusion duration
Rate = 3000 mL / 24 hr
Rate ≈ 125 mL/hr
Rounding to the nearest whole number:
Rate ≈ 125 mL/hr
Therefore, the nurse should set the IV pump to deliver approximately 125 mL/hr for the infusion of dextrose 5% in 0.45% sodium chloride over 24 hours.
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