The healthcare provider prescribes trimethobenzamide 100 mg IM every 6 hours for a client with postoperative vomiting. "Each 2 mL single-dose vial contains 200 mg of trimethobenzamide. How many mL should the nurse administer to the client for each dose? (Enter numeric value only.)
The Correct Answer is ["1"]
Given:
Ordered dose of trimethobenzamide: 100 mg IM every 6 hours
Concentration of trimethobenzamide: 200 mg/2 mL vial
Step 1: Set up the proportion:
Desired dose (mg) / Volume to administer (mL) = Concentration (mg/mL)
Step 2: Substitute the values:
100 mg / Volume = 200 mg/2 mL
Step 3: Solve for the unknown volume:
Volume = 100 mg / (200 mg/2 mL)
Volume = 100 mg x (2 mL / 200 mg)
Volume = 1 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.5"]
Explanation
Given:
Ordered loading dose of Heparin: 80 units/kg
Patient weight: 95 kg
Concentration of Heparin: 5,000 units/mL
Step 1: Calculate the total loading dose of Heparin:
Total loading dose (units) = Ordered dose (units/kg) x Patient weight (kg)
Total loading dose (units) = 80 units/kg x 95 kg
Total loading dose (units) = 7600 units
Step 2: Calculate the volume to be administered:
Volume (mL) = Total loading dose (units) / Concentration (units/mL)
Volume (mL) = 7600 units / 5000 units/mL
Volume (mL) = 1.52 mL
Step 3: Round to the nearest tenth:
Volume (mL) ≈ 1.5 mL
Correct Answer is ["1.3"]
Explanation
Given:
Ordered dose of amoxicillin: 25 mg/kg/day
Child's weight: 18 pounds
Concentration of amoxicillin suspension: 400 mg/5 mL
Step 1: Convert child's weight from pounds to kilograms:
1 pound (lb) = 0.453592 kilograms (kg)
Child's weight in kg = 18 lbs x 0.453592 kg/lb = 8.164656 kg
Step 2: Calculate the total daily dose of amoxicillin:
Total daily dose (mg) = Ordered dose (mg/kg/day) x Child's weight (kg)
Total daily dose (mg) = 25 mg/kg/day x 8.164656 kg
Total daily dose (mg) = 204.1164 mg/day
Step 3: Calculate the dose per administration:
Since the medication is given every 12 hours, there are 2 administrations per day.
Dose per administration (mg) = Total daily dose (mg) / Number of administrations per day
Dose per administration (mg) = 204.1164 mg/day / 2 administrations/day
Dose per administration (mg) = 102.0582 mg
Step 4: Calculate the volume to be administered per dose:
Volume (mL) = Dose per administration (mg) / Concentration (mg/mL)
Volume (mL) = 102.0582 mg / (400 mg/5 mL)
Volume (mL) = 102.0582 mg x (5 mL / 400 mg)
Volume (mL) = 1.2757275 mL
Step 5: Round to the nearest tenth:
Volume (mL) ≈ 1.3 mL
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