Lutz's Nutrition 7th ed. ch 15 Exam
Questions & Answers (Grade A+)
What effects does vitamin K and vitamin E on warfarin? -
correct answer ✅Vitamin K impedes warfarin and vitamin E
enhances it.
Phenytoin -
correct answer ✅Anticonvulsant
a drug to control epileptic seizures, is a folic acid antagonist that
competes with the vitamin for binding sites.
Pharmacokinetic = results in a lower serum level of phenytoin
Pharmocodynamic = if seizure activity increases
*long term use can cause folic acid deficiency.
Type 1 interactions -
correct answer ✅occur outside the body
ex. In the intravenous or Parenteral Nutrition (PN) solution.
In the syringe where substances are admixed
In tube feeding reservoirs
In the respective tubing
Type 2 interactions -
correct answer ✅occurs with oral or eternal intake, producing
, Lutz's Nutrition 7th ed. ch 15 Exam
Questions & Answers (Grade A+)
increased or decreased bio availability of either the drug or
nutrient.
Type 2 interaction influencing factors -
correct answer ✅Food intake
Modification of enzyme activity or transport mechanisms
Complexing or binding of drugs or nutrients so that one or both are
unavailable for absorption
Parenteral Nutrition (PN) -
correct answer ✅Administration of a nutritional solution into the
vascular system.
*PN is a complex formulation of glucose, amino acids, fat emulsion,
electrolytes, vitamins, and trace elements.
*medications are not usually added to PN, but commonly added
ones are insulin and heparin.
*prolonged exposure to these meds to the PN solution can result in
incompatibility reactions such as forming precipitates,
discoloration, and degradation of nutrients or medication.
Questions & Answers (Grade A+)
What effects does vitamin K and vitamin E on warfarin? -
correct answer ✅Vitamin K impedes warfarin and vitamin E
enhances it.
Phenytoin -
correct answer ✅Anticonvulsant
a drug to control epileptic seizures, is a folic acid antagonist that
competes with the vitamin for binding sites.
Pharmacokinetic = results in a lower serum level of phenytoin
Pharmocodynamic = if seizure activity increases
*long term use can cause folic acid deficiency.
Type 1 interactions -
correct answer ✅occur outside the body
ex. In the intravenous or Parenteral Nutrition (PN) solution.
In the syringe where substances are admixed
In tube feeding reservoirs
In the respective tubing
Type 2 interactions -
correct answer ✅occurs with oral or eternal intake, producing
, Lutz's Nutrition 7th ed. ch 15 Exam
Questions & Answers (Grade A+)
increased or decreased bio availability of either the drug or
nutrient.
Type 2 interaction influencing factors -
correct answer ✅Food intake
Modification of enzyme activity or transport mechanisms
Complexing or binding of drugs or nutrients so that one or both are
unavailable for absorption
Parenteral Nutrition (PN) -
correct answer ✅Administration of a nutritional solution into the
vascular system.
*PN is a complex formulation of glucose, amino acids, fat emulsion,
electrolytes, vitamins, and trace elements.
*medications are not usually added to PN, but commonly added
ones are insulin and heparin.
*prolonged exposure to these meds to the PN solution can result in
incompatibility reactions such as forming precipitates,
discoloration, and degradation of nutrients or medication.
