CNSC EXAM QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
First-line therapy for hyperkalemia
✔✔ Calcium gluconate
Total Body Water Composition
✔✔ 2/3 intracellular fluid, 1/3 extracellular fluid
✔✔ (Extracellular fluid = 1/4 intravascular, 3/4 interstitial)
Percent body weight that is water
✔✔ 60% in males / 50% in females
Respiratory Quotient (RQ) definition
✔✔ Ratio of carbon dioxide (CO₂) production to oxygen (O₂) consumption
Hang time for blenderized/reconstituted formula
✔✔ 4 hours
How often should micronutrient assessment be completed in long-term PN
patients?
✔✔ Every 6 months
Closed system hang time -ANSWER ✔✔24-48 hrs
,Open System hang time (home vs hospital) -ANSWER ✔✔Home - 12 hours
Hospital - 8 hours
Max Daily Dose of ILE -ANSWER ✔✔2.5 g/kg/d
Minimum ILE to prevent EFAD in infants -ANSWER ✔✔0.5-1 g/kg/day
pH of dextrose solutions -ANSWER ✔✔acidic 3.5-6.5
What factors increase calcium-phosphorus precipitation? -ANSWER ✔✔Warmer
temperature
Lower amino acid amounts
Use of calcium chloride
Filter size for 2-in-1 forumlations -ANSWER ✔✔0.22 micro meter
What is the smallest pore size you can use for TNA? -ANSWER ✔✔1.22 micro
meter
What is the size of fat particles? -ANSWER ✔✔0.1-1 micro meter
What is Glycerol? -ANSWER ✔✔A sugar alcohol that provides 4.3 kcal/kg; a
component of one SCAPN for peripheral use
Amino acid to nitrogen conversion -ANSWER ✔✔6.25 g amino acid = 1 g
nitrogen
, Which two commercially available AA solutions contain phosphate? -ANSWER
✔✔FreeAmine III; Heptamine (10 mmoll/L)
Max infusion rate for ILE infusion -ANSWER ✔✔0.11 g/kg/h
Preferred forms of calcium and magnesium -ANSWER ✔✔calcium gluconate and
magnesium sulfate
ASPEN recommended changes to trace elements in TPN -ANSWER
✔✔Decreased Copper (0.3->0.5 mg/d)
Decrease manganese to 55 mcg/d
Increase selenium (60-100 mcg/d)
Eliminate chromium or max 1 mcg/d
Keep Copper contamination < 0.1 mg/d Cu and 40 mcg/d Mn
Carnitine -ANSWER ✔✔a nonessential, nonprotein amino acid made in the body
from lysine that helps transport fatty acids across the mitochondrial membrane
Iron recommendation for pre-term infants -ANSWER ✔✔2-4 mg/kg/d
Max Osmolality for Infant Formula -ANSWER ✔✔460 mOsm/kg
Max GIR for term infant -ANSWER ✔✔14-18 mg/kg/min
Cysteine dose for neonatal TPN -ANSWER ✔✔30-40 mg/g of AA
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
First-line therapy for hyperkalemia
✔✔ Calcium gluconate
Total Body Water Composition
✔✔ 2/3 intracellular fluid, 1/3 extracellular fluid
✔✔ (Extracellular fluid = 1/4 intravascular, 3/4 interstitial)
Percent body weight that is water
✔✔ 60% in males / 50% in females
Respiratory Quotient (RQ) definition
✔✔ Ratio of carbon dioxide (CO₂) production to oxygen (O₂) consumption
Hang time for blenderized/reconstituted formula
✔✔ 4 hours
How often should micronutrient assessment be completed in long-term PN
patients?
✔✔ Every 6 months
Closed system hang time -ANSWER ✔✔24-48 hrs
,Open System hang time (home vs hospital) -ANSWER ✔✔Home - 12 hours
Hospital - 8 hours
Max Daily Dose of ILE -ANSWER ✔✔2.5 g/kg/d
Minimum ILE to prevent EFAD in infants -ANSWER ✔✔0.5-1 g/kg/day
pH of dextrose solutions -ANSWER ✔✔acidic 3.5-6.5
What factors increase calcium-phosphorus precipitation? -ANSWER ✔✔Warmer
temperature
Lower amino acid amounts
Use of calcium chloride
Filter size for 2-in-1 forumlations -ANSWER ✔✔0.22 micro meter
What is the smallest pore size you can use for TNA? -ANSWER ✔✔1.22 micro
meter
What is the size of fat particles? -ANSWER ✔✔0.1-1 micro meter
What is Glycerol? -ANSWER ✔✔A sugar alcohol that provides 4.3 kcal/kg; a
component of one SCAPN for peripheral use
Amino acid to nitrogen conversion -ANSWER ✔✔6.25 g amino acid = 1 g
nitrogen
, Which two commercially available AA solutions contain phosphate? -ANSWER
✔✔FreeAmine III; Heptamine (10 mmoll/L)
Max infusion rate for ILE infusion -ANSWER ✔✔0.11 g/kg/h
Preferred forms of calcium and magnesium -ANSWER ✔✔calcium gluconate and
magnesium sulfate
ASPEN recommended changes to trace elements in TPN -ANSWER
✔✔Decreased Copper (0.3->0.5 mg/d)
Decrease manganese to 55 mcg/d
Increase selenium (60-100 mcg/d)
Eliminate chromium or max 1 mcg/d
Keep Copper contamination < 0.1 mg/d Cu and 40 mcg/d Mn
Carnitine -ANSWER ✔✔a nonessential, nonprotein amino acid made in the body
from lysine that helps transport fatty acids across the mitochondrial membrane
Iron recommendation for pre-term infants -ANSWER ✔✔2-4 mg/kg/d
Max Osmolality for Infant Formula -ANSWER ✔✔460 mOsm/kg
Max GIR for term infant -ANSWER ✔✔14-18 mg/kg/min
Cysteine dose for neonatal TPN -ANSWER ✔✔30-40 mg/g of AA
