The physician orders a Lidocaine drip to infuse at 5 mcg/min. The drug is available as 750 mg in 500 mL of fluid. The client weighs 220 pounds. Calculate mcg/min, mcg/hr, and mL/hr.
The Correct Answer is ["0.2"]
Step-by-Step Calculation:
Step 1: Convert the client's weight from pounds to kilograms.
220 lbs ÷ 2.2 = 100 kg
Result = 100 kg
Step 2: Calculate the concentration of Lidocaine in mcg/mL.
750 mg × 1000 = 750,000 mcg
Result = 750,000 mcg
750,000 mcg ÷ 500 mL = 1500 mcg/mL
Result = 1500 mcg/mL
Step 3: Calculate the infusion rate in mcg/min.
5 mcg/min (prescribed dose)
Result = 5 mcg/min
Step 4: Calculate the infusion rate in mcg/hr.
5 mcg/min × 60 min/hr = 300 mcg/hr
Result = 300 mcg/hr
Step 5: Calculate the infusion rate in mL/hr.
300 mcg/hr ÷ 1500 mcg/mL = 0.2 mL/hr
Result = 0.2 mL/hr
Final Results:
- Infusion rate: 5 mcg/min
- Infusion rate: 300 mcg/hr
- Infusion rate: 0.2 mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A: Palpitations
Palpitations, or the sensation of a rapid or irregular heartbeat, can occur in various heart conditions, including left heart failure. However, they are not the most common or specific symptom of left heart failure. Palpitations can be caused by arrhythmias, anxiety, or other cardiac issues. In the context of left heart failure, the heart's inability to pump blood effectively leads to fluid buildup in the lungs, causing shortness of breath, which is a more direct and common manifestation.
Choice B: Peripheral edema
Peripheral edema, or swelling in the legs and ankles, is more commonly associated with right-sided heart failure. In right-sided heart failure, the heart's right ventricle fails to pump blood efficiently, leading to fluid accumulation in the body's extremities. While peripheral edema can occur in left heart failure, it is not as common as shortness of breath. Left heart failure primarily affects the lungs, leading to pulmonary congestion and shortness of breath.
Choice C: Shortness of breath
Shortness of breath, or dyspnea, is the hallmark symptom of left heart failure. When the left side of the heart fails to pump blood effectively, blood backs up into the pulmonary veins, causing fluid to leak into the lungs. This results in pulmonary congestion and difficulty breathing. Patients with left heart failure often experience shortness of breath during physical activity, while lying down (orthopnea), or waking up at night (paroxysmal nocturnal dyspnea). This symptom is a direct consequence of the heart's reduced ability to manage blood flow and is a key indicator of left heart failure.
Choice D: Chest pain
Chest pain can be a symptom of various cardiac conditions, including coronary artery disease, myocardial infarction (heart attack), and angina. While chest pain can occur in heart failure, it is not the most common manifestation of left heart failure. The primary issue in left heart failure is the heart's inability to pump blood effectively, leading to fluid buildup in the lungs and shortness of breath. Chest pain is more typically associated with ischemic heart conditions rather than heart failure itself.
Correct Answer is A
Explanation
Choice A Reason:
Maintaining the cervical collar in place is crucial for a client with a spinal cord injury at the level of C3-4. This action prevents further damage to the spinal cord by immobilizing the neck and maintaining proper alignment. Any movement could exacerbate the injury, potentially leading to more severe neurological deficits or even paralysis.
Choice B Reason:
Asking the client if they remember any events around the time of the injury is not the priority in this situation. While obtaining a history is important, it should not take precedence over stabilizing the spinal cord to prevent further injury. The primary focus should be on ensuring the client's safety and preventing additional harm.
Choice C Reason:
Explaining to the client that they will never be able to walk again is inappropriate and premature. The prognosis for spinal cord injuries can vary widely, and it is essential to provide accurate information based on a thorough assessment and consultation with specialists. Additionally, delivering such news requires sensitivity and should be done in a supportive manner.
Choice D Reason:
Notifying the client's parents that they are in the ED is important for family communication and support. However, it is not the immediate priority. The primary focus should be on stabilizing the client's condition and preventing further injury. Once the client is stabilized, the nurse can then inform the family.
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