HSRT Quantitative Reasoning and Numeracy 2

Question 1

A patient needs 2.5 mg of a drug per kg of body weight. The patient weighs 88 kg. The drug is available as a 50 mg/mL solution. How many mL should be administered?

Accepted Answer

4.4 mL

Answer

3.5 mL

Answer

5.0 mL

Answer

2.2 mL

Question 2

A clinical trial reports a risk ratio (RR) of 1.45 for myocardial infarction in patients on Drug X vs. placebo. Which numerical statement BEST interprets this finding?

Accepted Answer

Patients on Drug X have a 45% higher risk of MI relative to patients on placebo

Answer

45% of patients on Drug X will have an MI

Answer

Drug X increases the absolute probability of MI by 1.45

Answer

Drug X reduces MI risk by 45% compared to placebo

Question 3

A nurse needs to infuse 1 liter of normal saline over 8 hours using a standard IV drip set (20 drops/mL). What is the drip rate in drops per minute?

Accepted Answer

42 drops/min

Answer

25 drops/min

Answer

83 drops/min

Answer

20 drops/min

Question 4

A study shows Disease Y has an incidence of 12 per 100,000 per year in the general population. A clinician sees 2,000 patients per year. How many new cases of Disease Y would be expected in her practice per year?

Accepted Answer

0.24 cases per year (approximately 1 case every 4 years)

Answer

12 cases per year

Answer

2.4 cases per year

Answer

0.012 cases per year

Question 5

A patient's creatinine clearance is 45 mL/min. A drug's recommended dose adjustment states: 'Reduce dose by 50% if CrCl is between 30–59 mL/min.' The standard dose is 400 mg twice daily. What is the adjusted regimen?

Accepted Answer

200 mg twice daily

Answer

400 mg once daily

Answer

200 mg once daily

Answer

100 mg twice daily

Question 6

A patient's hemoglobin dropped from 12.4 g/dL to 9.8 g/dL over 2 weeks. The percent decline is approximately:

Accepted Answer

21% decline

Answer

26% decline

Answer

12% decline

Answer

79% decline