17 lbs, 6 ounces =____kg (Round to the nearest tenth & fill in the blank with the numerical value only)
The Correct Answer is ["7.9"]
Convert the ounces to a fraction of a pound:
16 ounces = 1 pound.
6 ounces = 6/16 pound
= 0.375 pound
Total weight in pounds = 17 pounds + 0.375 pound = 17.375 pounds
1 kg= 2.2 pounds
Weight in kg = 17.375 pounds / 2.2 pounds/kg
=7.8977 kg
Round to the nearest tenth:
Rounded weight = 7.9 kg
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["10"]
Explanation
Desired dose = 20 mg
Available concentration = 10 mg per 5 mL
- Calculate the concentration in mg/mL:
Concentration (mg/mL) = Available dose / Available volume
= 10 mg / 5 mL
= 2 mg/mL
Volume to administer = Desired dose / Available concentration
= 20 mg / 2 mg/mL
= 10 mL
Correct Answer is D
Explanation
A. It increases the metabolism of drugs in the liver: Grapefruit juice actually inhibits, rather than increases, the activity of liver enzymes particularly CYP3A4 resulting in slower drug metabolism and higher plasma concentrations of certain medications.
B. It decreases the absorption of medications: Grapefruit juice does not generally reduce drug absorption. In fact, by inhibiting intestinal enzymes, it can increase the absorption and bioavailability of some drugs, potentially raising them to toxic levels.
C. It only affects medications taken in the morning: The interaction is not time-specific. Grapefruit juice can affect drug metabolism even when consumed hours apart from the medication, as enzyme inhibition can persist for up to 24–72 hours.
D. It blocks the action of enzymes, leading to increased drug levels in the blood: Grapefruit juice inhibits cytochrome P450 enzymes especially CYP3A4 in the intestinal wall. This results in decreased drug breakdown and higher systemic concentrations, increasing the risk of adverse effects and toxicity.
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