A nurse is preparing to administer lidocaine 50 mg IV bolus. Available is lidocaine 200 mg/mL. How many mL should the nurse administer (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.3"]
Calculating the Lidocaine Dose
Problem: Administer 50 mg of lidocaine IV bolus. The available concentration is 200 mg/mL.
Steps:
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (50 mg) and the concentration of the medication (200 mg/mL).
Proportion:
x mL / 50 mg = 1 mL / 200 mg
Cross-multiply:
200x = 50
Solve for x:
x = 50 / 200
x = 0.25
Answer: The nurse should administer 0.3 mL of lidocaine per dose(rounded to the nearest tenth).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.3"]
Explanation
Calculating the Lidocaine Dose
Problem: Administer 50 mg of lidocaine IV bolus. The available concentration is 200 mg/mL.
Steps:
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (50 mg) and the concentration of the medication (200 mg/mL).
Proportion:
x mL / 50 mg = 1 mL / 200 mg
Cross-multiply:
200x = 50
Solve for x:
x = 50 / 200
x = 0.25
Answer: The nurse should administer 0.3 mL of lidocaine per dose(rounded to the nearest tenth).
Correct Answer is B
Explanation
A) Platelets 190,000/mm³:
A platelet count of 190,000/mm³ is within the normal range (typically 150,000 to 450,000/mm³). This result does not indicate a need for immediate concern in the context of warfarin therapy.
B) PT 45 seconds:
A prothrombin time (PT) of 45 seconds is significantly elevated. This indicates that the blood's clotting ability is excessively prolonged, which could increase the risk of bleeding complications in a client taking warfarin. Immediate notification to the provider is necessary to potentially adjust the dosage or investigate further.
C) Hgb 16 g/dL:
A hemoglobin level of 16 g/dL is within the normal range for adults (typically 13.8 to 17.2 g/dL for males and 12.1 to 15.1 g/dL for females). This result does not warrant concern in relation to warfarin therapy.
D) Hct 44%:
A hematocrit level of 44% is within the normal range (generally 40% to 50% for males and 36% to 48% for females). This result does not indicate an issue related to warfarin therapy.
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