Pharmaceutical calculations

How many grams of a 10% preparation must be mixed with a 0.5% preparation to make 500 g of a 4% preparation? Round to one decimal place if needed.

How many grams of a 10% preparation must be mixed with a 2% preparation to make 500 g of a 4% preparation? Round to one decimal place if needed.

How many grams of a 10% preparation must be mixed with a 0.5% preparation to make 454 g of a 2% preparation? Round to one decimal place if needed.

How many grams of a 2.5% preparation must be mixed with a 1% preparation to make 45 g of a 1.5% preparation? Round to one decimal place if needed.

How many grams of a 10% preparation must be mixed with a 2% preparation to make 500 g of a 8% preparation? Round to one decimal place if needed.

How many grams of a 10% preparation must be mixed with a 2% preparation to make 30 g of a 8% preparation? Round to one decimal place if needed.

How many grams of a 5% preparation must be mixed with a 0.5% preparation to make 240 g of a 2% preparation? Round to one decimal place if needed.

How many grams of a 20% preparation must be mixed with a 1% preparation to make 500 g of a 12.5% preparation? Round to one decimal place if needed.

How many mL of a 70% stock solution are needed to prepare 200 mL of a 12.5% solution?

How many mL of a 70% stock solution are needed to prepare 200 mL of a 10% solution?

How many mL of a 95% stock solution are needed to prepare 100 mL of a 5% solution?

How many mL of a 25% stock solution are needed to prepare 1000 mL of a 2% solution?

How many mL of a 20% stock solution are needed to prepare 120 mL of a 1% solution?

How many mL of a 20% stock solution are needed to prepare 100 mL of a 2.5% solution?

How many mL of a 95% stock solution are needed to prepare 1000 mL of a 12.5% solution?

How many grams of pure drug powder must be added to 60 g of a 2.5% ointment to make it 10%? Round to two decimal places.

How many grams of pure drug powder must be added to 45 g of a 2.5% ointment to make it 10%? Round to two decimal places.

How many grams of pure drug powder must be added to 120 g of a 2.5% ointment to make it 5%? Round to two decimal places.

How many grams of pure drug powder must be added to 60 g of a 2% ointment to make it 10%? Round to two decimal places.

How many grams of pure drug powder must be added to 120 g of a 2% ointment to make it 10%? Round to two decimal places.

How many grams of pure drug powder must be added to 90 g of a 2.5% ointment to make it 5%? Round to two decimal places.

How many milliequivalents are in 3 g of sodium chloride (MW 58.5; valence 1)? Round to one decimal place.

How many milliequivalents are in 1.5 g of magnesium sulfate (MW 246, as the heptahydrate; valence 2)? Round to one decimal place.

How many milliequivalents are in 1 g of sodium chloride (MW 58.5; valence 1)? Round to one decimal place.

How many milliequivalents are in 10 g of potassium chloride (MW 74.5; valence 1)? Round to one decimal place.

How many milliequivalents are in 5 g of calcium chloride (MW 147, as the dihydrate; valence 2)? Round to one decimal place.

How many milliequivalents are in 3 g of calcium chloride (MW 147, as the dihydrate; valence 2)? Round to one decimal place.

How many milliequivalents are in 1 g of potassium chloride (MW 74.5; valence 1)? Round to one decimal place.

Calculate the ideal osmolarity, in mOsmol/L, of a 5% w/v potassium chloride solution (MW 74.5; it dissociates into 2 particles). Round to the nearest whole number.

Calculate the ideal osmolarity, in mOsmol/L, of a 0.9% w/v sodium chloride solution (MW 58.5; it dissociates into 2 particles). Round to the nearest whole number.

Calculate the ideal osmolarity, in mOsmol/L, of a 5% w/v calcium chloride solution (MW 111; it dissociates into 3 particles). Round to the nearest whole number.

Calculate the ideal osmolarity, in mOsmol/L, of a 0.45% w/v sodium chloride solution (MW 58.5; it dissociates into 2 particles). Round to the nearest whole number.

Calculate the ideal osmolarity, in mOsmol/L, of a 0.9% w/v potassium chloride solution (MW 74.5; it dissociates into 2 particles). Round to the nearest whole number.

Calculate the ideal osmolarity, in mOsmol/L, of a 10% w/v sodium chloride solution (MW 58.5; it dissociates into 2 particles). Round to the nearest whole number.

How many mg of drug are in 30 mL of a 1% w/v solution?

How many mg of drug are in 20 mL of a 0.5% w/v solution?

How many mg of drug are in 100 mL of a 0.9% w/v solution?

How many mg of drug are in 30 mL of a 0.9% w/v solution?

How many mg of drug are in 100 mL of a 0.5% w/v solution?

How many mg of drug are in 10 mL of a 0.45% w/v solution?

How many mg of drug are in 30 mL of a 1:200 w/v solution?

How many mg of drug are in 30 mL of a 1:2,000 w/v solution?

How many mg of drug are in 0.5 mL of a 1:10,000 w/v solution?

How many mg of drug are in 60 mL of a 1:10,000 w/v solution?

How many mg of drug are in 0.3 mL of a 1:400 w/v solution?

How many mg of drug are in 30 mL of a 1:5,000 w/v solution?

Express a 1:2,000 w/v ratio strength as a percentage strength.

Express a 1:500 w/v ratio strength as a percentage strength.

Express a 1:1,000 w/v ratio strength as a percentage strength.

Express a 1:400 w/v ratio strength as a percentage strength.

A formula for 454 g of a cream contains 5 g of menthol. How many grams of menthol are needed to prepare 90 g? Round to two decimal places.

A formula for 500 g of a cream contains 2 g of lidocaine powder. How many grams of lidocaine powder are needed to prepare 30 g? Round to two decimal places.

A formula for 200 g of a cream contains 5 g of hydrocortisone powder. How many grams of hydrocortisone powder are needed to prepare 60 g? Round to two decimal places.

A formula for 100 g of a cream contains 3 g of salicylic acid. How many grams of salicylic acid are needed to prepare 45 g? Round to two decimal places.

A chemotherapy regimen calls for 1,000 mg/m². The patient is 171 cm tall and weighs 60 kg. Using the Mosteller BSA rounded to two decimal places, what dose, in mg rounded to the nearest whole number, should be prepared?

A chemotherapy regimen calls for 400 mg/m². The patient is 180 cm tall and weighs 55 kg. Using the Mosteller BSA rounded to two decimal places, what dose, in mg rounded to the nearest whole number, should be prepared?

A chemotherapy regimen calls for 75 mg/m². The patient is 162 cm tall and weighs 92 kg. Using the Mosteller BSA rounded to two decimal places, what dose, in mg rounded to the nearest whole number, should be prepared?

A chemotherapy regimen calls for 75 mg/m². The patient is 165 cm tall and weighs 77 kg. Using the Mosteller BSA rounded to two decimal places, what dose, in mg rounded to the nearest whole number, should be prepared?

A chemotherapy regimen calls for 75 mg/m². The patient is 166 cm tall and weighs 88 kg. Using the Mosteller BSA rounded to two decimal places, what dose, in mg rounded to the nearest whole number, should be prepared?

A chemotherapy regimen calls for 75 mg/m². The patient is 183 cm tall and weighs 84 kg. Using the Mosteller BSA rounded to two decimal places, what dose, in mg rounded to the nearest whole number, should be prepared?

A patient instills 2 drops in both eyes three times daily. The bottle holds 10 mL, and the dropper delivers 20 drops/mL. How many full days will the bottle last?

A patient instills 2 drops in both eyes twice daily. The bottle holds 15 mL, and the dropper delivers 20 drops/mL. How many full days will the bottle last?

A patient instills 1 drop in both eyes four times daily. The bottle holds 10 mL, and the dropper delivers 20 drops/mL. How many full days will the bottle last?

A patient instills 2 drops in both eyes once daily. The bottle holds 5 mL, and the dropper delivers 20 drops/mL. How many full days will the bottle last?

A patient instills 2 drops in both eyes twice daily. The bottle holds 5 mL, and the dropper delivers 20 drops/mL. How many full days will the bottle last?

A patient injects 12 units of U-100 insulin twice daily and primes the pen with 2 units before every injection. How many full days will one 3 mL pen last?

A patient injects 8 units of U-100 insulin twice daily and primes the pen with 2 units before every injection. How many full days will one 3 mL pen last?

A patient injects 16 units of U-100 insulin twice daily and primes the pen with 2 units before every injection. How many full days will a box of five 3 mL pens last?

A patient injects 24 units of U-100 insulin twice daily and primes the pen with 2 units before every injection. How many full days will a box of five 3 mL pens last?

A patient injects 14 units of U-100 insulin twice daily and primes the pen with 2 units before every injection. How many full days will a box of five 3 mL pens last?

A patient injects 8 units of U-100 insulin twice daily and primes the pen with 2 units before every injection. How many full days will a box of five 3 mL pens last?

A preparation must deliver 250 mg of a drug base (MW 285.3). Only its hydrochloride salt (MW 321.8) is available. How many mg of the salt are needed, rounded to the nearest mg?

A preparation must deliver 500 mg of a drug base (MW 180.2). Only its sulfate salt (MW 229.2) is available. How many mg of the salt are needed, rounded to the nearest mg?

A preparation must deliver 250 mg of a drug base (MW 349.4). Only its mesylate salt (MW 445.5) is available. How many mg of the salt are needed, rounded to the nearest mg?

A preparation must deliver 100 mg of a drug base (MW 180.2). Only its sulfate salt (MW 229.2) is available. How many mg of the salt are needed, rounded to the nearest mg?

A preparation must deliver 200 mg of a drug base (MW 230.3). Only its sodium salt (MW 252.3) is available. How many mg of the salt are needed, rounded to the nearest mg?

A patient taking prednisone 50 mg daily by mouth is switched to methylprednisolone. Using the standard glucocorticoid equivalents (hydrocortisone 20 mg = prednisone 5 mg = methylprednisolone 4 mg = dexamethasone 0.75 mg), what daily methylprednisolone dose is equivalent?

A patient taking hydrocortisone 240 mg daily by mouth is switched to methylprednisolone. Using the standard glucocorticoid equivalents (hydrocortisone 20 mg = prednisone 5 mg = methylprednisolone 4 mg = dexamethasone 0.75 mg), what daily methylprednisolone dose is equivalent?

A patient taking dexamethasone 7.5 mg daily by mouth is switched to methylprednisolone. Using the standard glucocorticoid equivalents (hydrocortisone 20 mg = prednisone 5 mg = methylprednisolone 4 mg = dexamethasone 0.75 mg), what daily methylprednisolone dose is equivalent?

A patient taking hydrocortisone 40 mg daily by mouth is switched to methylprednisolone. Using the standard glucocorticoid equivalents (hydrocortisone 20 mg = prednisone 5 mg = methylprednisolone 4 mg = dexamethasone 0.75 mg), what daily methylprednisolone dose is equivalent?

A patient taking methylprednisolone 48 mg daily by mouth is switched to prednisone. Using the standard glucocorticoid equivalents (hydrocortisone 20 mg = prednisone 5 mg = methylprednisolone 4 mg = dexamethasone 0.75 mg), what daily prednisone dose is equivalent?

A patient taking prednisone 30 mg daily by mouth is switched to methylprednisolone. Using the standard glucocorticoid equivalents (hydrocortisone 20 mg = prednisone 5 mg = methylprednisolone 4 mg = dexamethasone 0.75 mg), what daily methylprednisolone dose is equivalent?

An order reads 250 mg by mouth twice daily for 10 days. The suspension is 100 mg/5 mL. What is the total volume, in mL, needed for the full course?

An order reads 500 mg by mouth twice daily for 10 days. The suspension is 250 mg/5 mL. What is the total volume, in mL, needed for the full course?

An order reads 150 mg by mouth twice daily for 10 days. The suspension is 100 mg/5 mL. What is the total volume, in mL, needed for the full course?

An order reads 300 mg by mouth three times daily for 7 days. The suspension is 125 mg/5 mL. What is the total volume, in mL, needed for the full course?

An order reads 500 mg by mouth twice daily for 7 days. The suspension is 200 mg/5 mL. What is the total volume, in mL, needed for the full course?

An order reads 100 mg by mouth three times daily for 10 days. The suspension is 100 mg/5 mL. What is the total volume, in mL, needed for the full course?

An order reads 250 mg by mouth three times daily for 7 days. The suspension is 250 mg/5 mL. What is the total volume, in mL, needed for the full course?

A prescription reads 2.5 mg by mouth three times daily for 90 days. The pharmacy stocks 5 mg tablets, which may be split if scored. How many tablets should be dispensed?

A prescription reads 12.5 mg by mouth twice daily for 90 days. The pharmacy stocks 25 mg tablets, which may be split if scored. How many tablets should be dispensed?

A prescription reads 30 mg by mouth three times daily for 90 days. The pharmacy stocks 20 mg tablets, which may be split if scored. How many tablets should be dispensed?

A prescription reads 75 mg by mouth once daily for 14 days. The pharmacy stocks 50 mg tablets, which may be split if scored. How many tablets should be dispensed?

A prescription reads 50 mg by mouth three times daily for 30 days. The pharmacy stocks 25 mg tablets, which may be split if scored. How many tablets should be dispensed?

A child who weighs 34 lb is prescribed cephalexin oral suspension 50 mg/kg/day divided every 12 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A child who weighs 47 lb is prescribed amoxicillin oral suspension 90 mg/kg/day divided every 12 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A child who weighs 62 lb is prescribed ibuprofen oral suspension 40 mg/kg/day divided every 6 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A child who weighs 30 lb is prescribed cephalexin oral suspension 25 mg/kg/day divided every 6 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A child who weighs 40 lb is prescribed ibuprofen oral suspension 40 mg/kg/day divided every 6 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A child who weighs 51 lb is prescribed cephalexin oral suspension 25 mg/kg/day divided every 6 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A child who weighs 64 lb is prescribed ibuprofen oral suspension 30 mg/kg/day divided every 6 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A child who weighs 60 lb is prescribed amoxicillin oral suspension 80 mg/kg/day divided every 12 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A child who weighs 47 lb is prescribed cephalexin oral suspension 25 mg/kg/day divided every 12 hours. How many mg should the child receive per dose, rounded to the nearest mg?

A man is 5 feet 4 inches tall and weighs 112 kg. Calculate the adjusted body weight in kg, using the Devine ideal body weight and a correction factor of 0.4. Round to one decimal place.

A man is 5 feet 9 inches tall and weighs 104 kg. Calculate the adjusted body weight in kg, using the Devine ideal body weight and a correction factor of 0.4. Round to one decimal place.

A man is 5 feet 11 inches tall and weighs 121 kg. Calculate the adjusted body weight in kg, using the Devine ideal body weight and a correction factor of 0.4. Round to one decimal place.

A man is 5 feet 5 inches tall and weighs 87 kg. Calculate the adjusted body weight in kg, using the Devine ideal body weight and a correction factor of 0.4. Round to one decimal place.

A woman is 6 feet 2 inches tall and weighs 114 kg. Calculate the adjusted body weight in kg, using the Devine ideal body weight and a correction factor of 0.4. Round to one decimal place.

A patient's white blood cell count is 3.1 x 10³ cells/mm³, with 30% segmented neutrophils and 6% bands. What is the absolute neutrophil count in cells/mm³?

A patient's white blood cell count is 3.4 x 10³ cells/mm³, with 40% segmented neutrophils and 10% bands. What is the absolute neutrophil count in cells/mm³?

A patient's white blood cell count is 2.6 x 10³ cells/mm³, with 36% segmented neutrophils and 3% bands. What is the absolute neutrophil count in cells/mm³?

A patient's white blood cell count is 4.0 x 10³ cells/mm³, with 38% segmented neutrophils and 6% bands. What is the absolute neutrophil count in cells/mm³?

A patient's white blood cell count is 3.4 x 10³ cells/mm³, with 55% segmented neutrophils and 8% bands. What is the absolute neutrophil count in cells/mm³?

A patient is 185 cm tall and weighs 56 kg. What is the body mass index in kg/m², rounded to one decimal place?

A patient is 187 cm tall and weighs 51 kg. What is the body mass index in kg/m², rounded to one decimal place?

A patient is 172 cm tall and weighs 50 kg. What is the body mass index in kg/m², rounded to one decimal place?

A patient is 183 cm tall and weighs 52 kg. What is the body mass index in kg/m², rounded to one decimal place?

A patient is 184 cm tall and weighs 58 kg. By the Mosteller formula, what is the body surface area in m², rounded to two decimal places?

A patient is 160 cm tall and weighs 79 kg. By the Mosteller formula, what is the body surface area in m², rounded to two decimal places?

A patient is 167 cm tall and weighs 88 kg. By the Mosteller formula, what is the body surface area in m², rounded to two decimal places?

A patient is 184 cm tall and weighs 75 kg. By the Mosteller formula, what is the body surface area in m², rounded to two decimal places?

A patient is 153 cm tall and weighs 93 kg. By the Mosteller formula, what is the body surface area in m², rounded to two decimal places?

A patient's serum calcium is 8.4 mg/dL and serum albumin is 2.6 g/dL. Using a normal albumin of 4 g/dL, what is the corrected calcium in mg/dL, rounded to one decimal place?

A patient's serum calcium is 8.0 mg/dL and serum albumin is 1.8 g/dL. Using a normal albumin of 4 g/dL, what is the corrected calcium in mg/dL, rounded to one decimal place?

A patient's serum calcium is 8.0 mg/dL and serum albumin is 1.6 g/dL. Using a normal albumin of 4 g/dL, what is the corrected calcium in mg/dL, rounded to one decimal place?

A patient's serum calcium is 7.0 mg/dL and serum albumin is 1.8 g/dL. Using a normal albumin of 4 g/dL, what is the corrected calcium in mg/dL, rounded to one decimal place?

A patient's serum calcium is 8.0 mg/dL and serum albumin is 2.6 g/dL. Using a normal albumin of 4 g/dL, what is the corrected calcium in mg/dL, rounded to one decimal place?

A 49-year-old man weighs 71 kg and has a serum creatinine of 1.4 mg/dL. Using the Cockcroft-Gault equation with actual body weight, what is the estimated creatinine clearance, in mL/min, rounded to the nearest whole number?

An 85-year-old man weighs 79 kg and has a serum creatinine of 1.6 mg/dL. Using the Cockcroft-Gault equation with actual body weight, what is the estimated creatinine clearance, in mL/min, rounded to the nearest whole number?

A 63-year-old man weighs 63 kg and has a serum creatinine of 1.2 mg/dL. Using the Cockcroft-Gault equation with actual body weight, what is the estimated creatinine clearance, in mL/min, rounded to the nearest whole number?

A 46-year-old man weighs 56 kg and has a serum creatinine of 2.1 mg/dL. Using the Cockcroft-Gault equation with actual body weight, what is the estimated creatinine clearance, in mL/min, rounded to the nearest whole number?

A 52-year-old man weighs 74 kg and has a serum creatinine of 2.1 mg/dL. Using the Cockcroft-Gault equation with actual body weight, what is the estimated creatinine clearance, in mL/min, rounded to the nearest whole number?

A 59-year-old woman weighs 70 kg and has a serum creatinine of 1.2 mg/dL. Using the Cockcroft-Gault equation with actual body weight, what is the estimated creatinine clearance, in mL/min, rounded to the nearest whole number?

A 47-year-old man weighs 68 kg and has a serum creatinine of 0.8 mg/dL. Using the Cockcroft-Gault equation with actual body weight, what is the estimated creatinine clearance, in mL/min, rounded to the nearest whole number?

A 62-year-old man weighs 64 kg and has a serum creatinine of 0.8 mg/dL. Using the Cockcroft-Gault equation with actual body weight, what is the estimated creatinine clearance, in mL/min, rounded to the nearest whole number?

By the Devine formula, what is the ideal body weight, in kg, of a man who is 6 feet 1 inches tall? Round to one decimal place.

By the Devine formula, what is the ideal body weight, in kg, of a man who is 5 feet 10 inches tall? Round to one decimal place.

By the Devine formula, what is the ideal body weight, in kg, of a woman who is 5 feet 9 inches tall? Round to one decimal place.

By the Devine formula, what is the ideal body weight, in kg, of a man who is 5 feet 9 inches tall? Round to one decimal place.

By the Devine formula, what is the ideal body weight, in kg, of a man who is 6 feet 3 inches tall? Round to one decimal place.

A 77-year-old man weighing 67 kg has a serum creatinine of 1.1 mg/dL. A prescriber orders an antibiotic whose labeled renal dosing is: CrCl 50 mL/min or more: 500 mg every 12 hours; CrCl 30 to 49 mL/min: 500 mg every 24 hours; CrCl below 30 mL/min: 250 mg every 24 hours. Using Cockcroft-Gault with actual body weight, which regimen is appropriate?

A 63-year-old woman weighing 73 kg has a serum creatinine of 2.6 mg/dL. A prescriber orders an antibiotic whose labeled renal dosing is: CrCl 50 mL/min or more: 500 mg every 12 hours; CrCl 30 to 49 mL/min: 500 mg every 24 hours; CrCl below 30 mL/min: 250 mg every 24 hours. Using Cockcroft-Gault with actual body weight, which regimen is appropriate?

A 62-year-old man weighing 74 kg has a serum creatinine of 1.5 mg/dL. A prescriber orders an anticoagulant whose labeled renal dosing is: CrCl 50 mL/min or more: 75 mg once daily; CrCl 30 to 49 mL/min: 50 mg once daily; CrCl below 30 mL/min: 25 mg once daily. Using Cockcroft-Gault with actual body weight, which regimen is appropriate?

A 62-year-old woman weighing 66 kg has a serum creatinine of 1.3 mg/dL. A prescriber orders an anticoagulant whose labeled renal dosing is: CrCl 50 mL/min or more: 75 mg once daily; CrCl 30 to 49 mL/min: 50 mg once daily; CrCl below 30 mL/min: 25 mg once daily. Using Cockcroft-Gault with actual body weight, which regimen is appropriate?

A 75-year-old man weighing 68 kg has a serum creatinine of 1.1 mg/dL. A prescriber orders an anticoagulant whose labeled renal dosing is: CrCl 50 mL/min or more: 75 mg once daily; CrCl 30 to 49 mL/min: 50 mg once daily; CrCl below 30 mL/min: 25 mg once daily. Using Cockcroft-Gault with actual body weight, which regimen is appropriate?

An 81-year-old man weighing 77 kg has a serum creatinine of 1.9 mg/dL. A prescriber orders an anticoagulant whose labeled renal dosing is: CrCl 50 mL/min or more: 75 mg once daily; CrCl 30 to 49 mL/min: 50 mg once daily; CrCl below 30 mL/min: 25 mg once daily. Using Cockcroft-Gault with actual body weight, which regimen is appropriate?

An 86-year-old man weighing 77 kg has a serum creatinine of 1.7 mg/dL. A prescriber orders an anticoagulant whose labeled renal dosing is: CrCl 50 mL/min or more: 75 mg once daily; CrCl 30 to 49 mL/min: 50 mg once daily; CrCl below 30 mL/min: 25 mg once daily. Using Cockcroft-Gault with actual body weight, which regimen is appropriate?

How many kilocalories does 250 mL of dextrose 10% in water provide? Use 3.4 kcal/g for hydrated dextrose and round to the nearest whole number.

How many kilocalories does 500 mL of dextrose 10% in water provide? Use 3.4 kcal/g for hydrated dextrose and round to the nearest whole number.

How many kilocalories does 1000 mL of dextrose 70% in water provide? Use 3.4 kcal/g for hydrated dextrose and round to the nearest whole number.

How many kilocalories does 350 mL of dextrose 50% in water provide? Use 3.4 kcal/g for hydrated dextrose and round to the nearest whole number.

How many kilocalories does 300 mL of dextrose 5% in water provide? Use 3.4 kcal/g for hydrated dextrose and round to the nearest whole number.

How many kilocalories does 400 mL of dextrose 10% in water provide? Use 3.4 kcal/g for hydrated dextrose and round to the nearest whole number.

A screening test was given to patients whose disease status was confirmed: 60 true positives, 53 false positives, 24 false negatives and 220 true negatives. What is the test's specificity, as a percent rounded to one decimal place?

A screening test was given to patients whose disease status was confirmed: 59 true positives, 38 false positives, 24 false negatives and 369 true negatives. What is the test's sensitivity, as a percent rounded to one decimal place?

A screening test was given to patients whose disease status was confirmed: 66 true positives, 34 false positives, 27 false negatives and 117 true negatives. What is the test's specificity, as a percent rounded to one decimal place?

A screening test was given to patients whose disease status was confirmed: 46 true positives, 48 false positives, 19 false negatives and 310 true negatives. What is the test's negative predictive value, as a percent rounded to one decimal place?

A screening test was given to patients whose disease status was confirmed: 89 true positives, 48 false positives, 30 false negatives and 168 true negatives. What is the test's sensitivity, as a percent rounded to one decimal place?

A screening test was given to patients whose disease status was confirmed: 57 true positives, 51 false positives, 30 false negatives and 176 true negatives. What is the test's sensitivity, as a percent rounded to one decimal place?

A screening test was given to patients whose disease status was confirmed: 57 true positives, 47 false positives, 29 false negatives and 260 true negatives. What is the test's positive predictive value, as a percent rounded to one decimal place?

A drug follows first-order elimination. A level drawn after distribution is 36 mg/L, and a level 10 hours later is 10.3 mg/L, with no dose between. What is the elimination half-life in hours, rounded to one decimal place?

A drug follows first-order elimination. A level drawn after distribution is 30 mg/L, and a level 6 hours later is 15.7 mg/L, with no dose between. What is the elimination half-life in hours, rounded to one decimal place?

A drug follows first-order elimination. A level drawn after distribution is 30 mg/L, and a level 8 hours later is 8.7 mg/L, with no dose between. What is the elimination half-life in hours, rounded to one decimal place?

A drug follows first-order elimination. A level drawn after distribution is 40 mg/L, and a level 10 hours later is 10.6 mg/L, with no dose between. What is the elimination half-life in hours, rounded to one decimal place?

A drug follows first-order elimination. A level drawn after distribution is 36 mg/L, and a level 6 hours later is 10.9 mg/L, with no dose between. What is the elimination half-life in hours, rounded to one decimal place?

A drug follows first-order elimination. A level drawn after distribution is 24 mg/L, and a level 4 hours later is 8.7 mg/L, with no dose between. What is the elimination half-life in hours, rounded to one decimal place?

A drug follows first-order elimination. A level drawn after distribution is 36 mg/L, and a level 6 hours later is 23.1 mg/L, with no dose between. What is the elimination half-life in hours, rounded to one decimal place?

A drug follows first-order elimination. A level drawn after distribution is 36 mg/L, and a level 6 hours later is 15.5 mg/L, with no dose between. What is the elimination half-life in hours, rounded to one decimal place?

A new therapy costs $42,000 and yields 4.6 QALYs per patient; standard therapy costs $12,000 and yields 4.2 QALYs. What is the incremental cost-effectiveness ratio, in dollars per QALY gained, rounded to the nearest dollar?

A new therapy costs $36,000 and yields 6.9 QALYs per patient; standard therapy costs $12,000 and yields 6.1 QALYs. What is the incremental cost-effectiveness ratio, in dollars per QALY gained, rounded to the nearest dollar?

A new therapy costs $54,000 and yields 5.3 QALYs per patient; standard therapy costs $30,000 and yields 5 QALYs. What is the incremental cost-effectiveness ratio, in dollars per QALY gained, rounded to the nearest dollar?

A new therapy costs $14,000 and yields 8.2 QALYs per patient; standard therapy costs $8,000 and yields 8 QALYs. What is the incremental cost-effectiveness ratio, in dollars per QALY gained, rounded to the nearest dollar?

A new therapy costs $29,000 and yields 4.7 QALYs per patient; standard therapy costs $20,000 and yields 4.2 QALYs. What is the incremental cost-effectiveness ratio, in dollars per QALY gained, rounded to the nearest dollar?

How many kilocalories does 300 mL of a 20% intravenous lipid emulsion provide, using 2 kcal/mL?

How many kilocalories does 150 mL of a 20% intravenous lipid emulsion provide, using 2 kcal/mL?

How many kilocalories does 250 mL of a 20% intravenous lipid emulsion provide, using 2 kcal/mL?

How many kilocalories does 500 mL of a 20% intravenous lipid emulsion provide, using 2 kcal/mL?

A target peak of 20 mg/L is wanted in an 87 kg patient. The drug's volume of distribution is 0.8 L/kg, and it is given intravenously (F = 1). The product's salt factor is 0.8. What loading dose of the salt, in mg rounded to the nearest whole number, is needed?

A target peak of 20 mg/L is wanted in an 83 kg patient. The drug's volume of distribution is 0.6 L/kg, and it is given intravenously (F = 1). The product's salt factor is 0.8. What loading dose of the salt, in mg rounded to the nearest whole number, is needed?

A target peak of 10 mg/L is wanted in an 83 kg patient. The drug's volume of distribution is 0.5 L/kg, and it is given intravenously (F = 1). What loading dose, in mg rounded to the nearest whole number, is needed?

A target peak of 10 mg/L is wanted in a 92 kg patient. The drug's volume of distribution is 0.7 L/kg, and it is given intravenously (F = 1). What loading dose, in mg rounded to the nearest whole number, is needed?

A target peak of 10 mg/L is wanted in an 86 kg patient. The drug's volume of distribution is 0.6 L/kg, and it is given intravenously (F = 1). The product's salt factor is 0.92. What loading dose of the salt, in mg rounded to the nearest whole number, is needed?

A target peak of 12 mg/L is wanted in a 76 kg patient. The drug's volume of distribution is 0.8 L/kg, and it is given intravenously (F = 1). The product's salt factor is 0.92. What loading dose of the salt, in mg rounded to the nearest whole number, is needed?

A target peak of 20 mg/L is wanted in a 71 kg patient. The drug's volume of distribution is 0.5 L/kg, and it is given intravenously (F = 1). What loading dose, in mg rounded to the nearest whole number, is needed?

A target peak of 12 mg/L is wanted in an 83 kg patient. The drug's volume of distribution is 0.7 L/kg, and it is given intravenously (F = 1). The product's salt factor is 0.92. What loading dose of the salt, in mg rounded to the nearest whole number, is needed?

By the 100-50-20 method (Holliday-Segar), what is the daily maintenance fluid requirement, in mL/day, for a 41 kg child?

By the 100-50-20 method (Holliday-Segar), what is the daily maintenance fluid requirement, in mL/day, for a 14 kg child?

By the 100-50-20 method (Holliday-Segar), what is the daily maintenance fluid requirement, in mL/day, for a 15 kg child?

By the 100-50-20 method (Holliday-Segar), what is the daily maintenance fluid requirement, in mL/day, for a 30 kg child?

By the 100-50-20 method (Holliday-Segar), what is the daily maintenance fluid requirement, in mL/day, for a 25 kg child?

By the 100-50-20 method (Holliday-Segar), what is the daily maintenance fluid requirement, in mL/day, for a 27 kg child?

How many grams of nitrogen are in 500 mL of a 8.5% amino acid solution? Use 6.25 g protein per g nitrogen and round to one decimal place.

How many grams of nitrogen are in 500 mL of a 5% amino acid solution? Use 6.25 g protein per g nitrogen and round to one decimal place.

How many grams of nitrogen are in 800 mL of a 5% amino acid solution? Use 6.25 g protein per g nitrogen and round to one decimal place.

How many grams of nitrogen are in 1000 mL of a 15% amino acid solution? Use 6.25 g protein per g nitrogen and round to one decimal place.

How many grams of nitrogen are in 750 mL of a 8.5% amino acid solution? Use 6.25 g protein per g nitrogen and round to one decimal place.

In a trial, the outcome occurred in 20% of the placebo group and 17% of the treatment group over 3 years. How many patients must be treated for 3 years to prevent one outcome (NNT), rounded up to a whole patient as is conventional?

In a trial, the outcome occurred in 18% of the placebo group and 12.6% of the treatment group over 3 years. How many patients must be treated for 3 years to prevent one outcome (NNT), rounded up to a whole patient as is conventional?

In a trial, the outcome occurred in 18% of the placebo group and 7.8% of the treatment group over 3 years. How many patients must be treated for 3 years to prevent one outcome (NNT), rounded up to a whole patient as is conventional?

In a trial, the outcome occurred in 4% of the placebo group and 2.5% of the treatment group over 3 years. How many patients must be treated for 3 years to prevent one outcome (NNT), rounded up to a whole patient as is conventional?

In a trial, the outcome occurred in 18% of the placebo group and 11.2% of the treatment group over 3 years. How many patients must be treated for 3 years to prevent one outcome (NNT), rounded up to a whole patient as is conventional?

In a trial, the outcome occurred in 4% of the placebo group and 2.3% of the treatment group over 3 years. How many patients must be treated for 3 years to prevent one outcome (NNT), rounded up to a whole patient as is conventional?

In a trial, the outcome occurred in 12% of the placebo group and 8.2% of the treatment group over 3 years. How many patients must be treated for 3 years to prevent one outcome (NNT), rounded up to a whole patient as is conventional?

In a trial, the outcome occurred in 6% of the placebo group and 2.6% of the treatment group over 3 years. How many patients must be treated for 3 years to prevent one outcome (NNT), rounded up to a whole patient as is conventional?

A patient takes a single 400 mg dose of a drug with a half-life of 6 hours. Assuming first-order elimination, how many mg remain in the body after 24 hours?

A patient takes a single 800 mg dose of a drug with a half-life of 6 hours. Assuming first-order elimination, how many mg remain in the body after 24 hours?

A patient takes a single 1000 mg dose of a drug with a half-life of 8 hours. Assuming first-order elimination, how many mg remain in the body after 40 hours?

A patient takes a single 200 mg dose of a drug with a half-life of 12 hours. Assuming first-order elimination, how many mg remain in the body after 36 hours?

A patient takes a single 1000 mg dose of a drug with a half-life of 2 hours. Assuming first-order elimination, how many mg remain in the body after 8 hours?

An event occurred in 20% of patients given placebo and 4% of patients given a new drug. What is the relative risk reduction, as a percent rounded to the nearest whole number?

An event occurred in 15% of patients given placebo and 10% of patients given a new drug. What is the relative risk reduction, as a percent rounded to the nearest whole number?

An event occurred in 20% of patients given placebo and 18% of patients given a new drug. What is the relative risk reduction, as a percent rounded to the nearest whole number?

An event occurred in 40% of patients given placebo and 4% of patients given a new drug. What is the relative risk reduction, as a percent rounded to the nearest whole number?

An event occurred in 24% of patients given placebo and 5% of patients given a new drug. What is the relative risk reduction, as a percent rounded to the nearest whole number?

An event occurred in 20% of patients given placebo and 2% of patients given a new drug. What is the relative risk reduction, as a percent rounded to the nearest whole number?

An intravenous bolus of 1500 mg gives an extrapolated initial plasma concentration of 5 mg/L. What is the apparent volume of distribution in liters?

An intravenous bolus of 2000 mg gives an extrapolated initial plasma concentration of 10 mg/L. What is the apparent volume of distribution in liters?

An intravenous bolus of 1500 mg gives an extrapolated initial plasma concentration of 25 mg/L. What is the apparent volume of distribution in liters?

An intravenous bolus of 250 mg gives an extrapolated initial plasma concentration of 16 mg/L. What is the apparent volume of distribution in liters?

An intravenous bolus of 500 mg gives an extrapolated initial plasma concentration of 10 mg/L. What is the apparent volume of distribution in liters?

500 mL of fluid is to run over 6 hours through a set with a drop factor of 20 gtt/mL. What is the flow rate in drops per minute, rounded to the nearest whole drop?

250 mL of fluid is to run over 2 hours through a set with a drop factor of 15 gtt/mL. What is the flow rate in drops per minute, rounded to the nearest whole drop?

1000 mL of fluid is to run over 12 hours through a set with a drop factor of 60 gtt/mL. What is the flow rate in drops per minute, rounded to the nearest whole drop?

1000 mL of fluid is to run over 12 hours through a set with a drop factor of 15 gtt/mL. What is the flow rate in drops per minute, rounded to the nearest whole drop?

1000 mL of fluid is to run over 6 hours through a set with a drop factor of 60 gtt/mL. What is the flow rate in drops per minute, rounded to the nearest whole drop?

500 mL of fluid is to run over 2 hours through a set with a drop factor of 60 gtt/mL. What is the flow rate in drops per minute, rounded to the nearest whole drop?

A heparin infusion is ordered at 12 units/kg/hour for a 90 kg patient. The bag contains 25,000 units in 500 mL. What is the rate in mL/hour, rounded to one decimal place?

A heparin infusion is ordered at 18 units/kg/hour for an 85 kg patient. The bag contains 25,000 units in 250 mL. What is the rate in mL/hour, rounded to one decimal place?

A heparin infusion is ordered at 12 units/kg/hour for a 70 kg patient. The bag contains 25,000 units in 250 mL. What is the rate in mL/hour, rounded to one decimal place?

A heparin infusion is ordered at 12 units/kg/hour for a 62 kg patient. The bag contains 25,000 units in 500 mL. What is the rate in mL/hour, rounded to one decimal place?

A heparin infusion is ordered at 12 units/kg/hour for a 92 kg patient. The bag contains 25,000 units in 250 mL. What is the rate in mL/hour, rounded to one decimal place?

A heparin infusion is ordered at 18 units/kg/hour for an 85 kg patient. The bag contains 25,000 units in 500 mL. What is the rate in mL/hour, rounded to one decimal place?

A 1000 mL bag is infused at 100 mL/hour. How many minutes will the infusion take?

A 100 mL bag is infused at 50 mL/hour. How many minutes will the infusion take?

A 150 mL bag is infused at 25 mL/hour. How many minutes will the infusion take?

A 500 mL bag is infused at 25 mL/hour. How many minutes will the infusion take?

Dobutamine is ordered at 10 mcg/kg/minute for a 69 kg patient. The bag contains 250 mg in 250 mL. What is the infusion rate in mL/hour, rounded to one decimal place?

Dopamine is ordered at 8 mcg/kg/minute for a 104 kg patient. The bag contains 400 mg in 250 mL. What is the infusion rate in mL/hour, rounded to one decimal place?

Norepinephrine is ordered at 0.15 mcg/kg/minute for an 83 kg patient. The bag contains 4 mg in 250 mL. What is the infusion rate in mL/hour, rounded to one decimal place?

Norepinephrine is ordered at 0.08 mcg/kg/minute for an 85 kg patient. The bag contains 4 mg in 250 mL. What is the infusion rate in mL/hour, rounded to one decimal place?

Esmolol is ordered at 100 mcg/kg/minute for a 92 kg patient. The bag contains 2500 mg in 250 mL. What is the infusion rate in mL/hour, rounded to one decimal place?

Dopamine is ordered at 10 mcg/kg/minute for a 91 kg patient. The bag contains 400 mg in 250 mL. What is the infusion rate in mL/hour, rounded to one decimal place?

Esmolol is ordered at 50 mcg/kg/minute for a 100 kg patient. The bag contains 2500 mg in 250 mL. What is the infusion rate in mL/hour, rounded to one decimal place?

A continuous infusion is ordered at 25 mg/hour. The bag contains 40 mg in 100 mL. At what rate, in mL/hour, should the pump be set?

A continuous infusion is ordered at 30 mg/hour. The bag contains 125 mg in 250 mL. At what rate, in mL/hour, should the pump be set?

A continuous infusion is ordered at 25 mg/hour. The bag contains 500 mg in 250 mL. At what rate, in mL/hour, should the pump be set?

A continuous infusion is ordered at 15 mg/hour. The bag contains 500 mg in 250 mL. At what rate, in mL/hour, should the pump be set?

A continuous infusion is ordered at 25 mg/hour. The bag contains 125 mg in 250 mL. At what rate, in mL/hour, should the pump be set?

A continuous infusion is ordered at 15 mg/hour. The bag contains 40 mg in 100 mL. At what rate, in mL/hour, should the pump be set?

A continuous infusion is ordered at 15 mg/hour. The bag contains 1000 mg in 500 mL. At what rate, in mL/hour, should the pump be set?

A continuous infusion is ordered at 15 mg/hour. The bag contains 200 mg in 100 mL. At what rate, in mL/hour, should the pump be set?