Nutrition Flashcards
What is the most common reason sited for lack of response to iron supplementation?
Patient adherence issues
Which symptom is NOT associated with iron deficiency: Diarrhea Fatigue Decreased cognitive ability Pagophagia
Diarrhea
(T or F) One form of pica, the urge to eat ice is associated with iron deficiency and resolves with correction of the deficiency.
True
In which ways is iron balance maintained in the body?
Epidermal cell sloughing
Blood loss through menstruation
GI absorption
Which form of iron is most readily absorbed?
Heme iron
Which foods can block iron absorption?
Milk
Green tea
(T or F) Iron is more readily absorbed on an empty stomach but can cause irritation.
True
New research is demonstrating improved methods for dosing iron to increase its absorption. According to the research, which dosing method is preferred?
Low doses many times a day
Moderate doses every other day
Dose to bowel tolerance
The maximum RDA every day
Moderate doses every other day
New research is demonstrating improved methods for dosing iron to increase its absorption. According to the research, which dosing method is preferred?
Low doses many times a day
Moderate doses every other day
Dose to bowel tolerance
The maximum RDA every day
Moderate doses every other day
Which of the test is the most sensitive for detecting early (uncomplicated) iron deficiency?
Ferritin
Which testing can be used to determine response to iron supplementation in an iron deficiency individual?
Reticulocyte index
Hemoglobin
Ferritin
Each of these can be helpful at different time intervals.
Each of these can be helpful at different time intervals.
Your patient has increase serum homocysteine and normal serum methylmalonic acid leading you to suspect she has:
Folate deficiency
(T or F) B12 deficiency can lead to folate deficiency.
True
________ is the most common cause of B12 deficiency
Pernicious anemia
At what B12 level is a methylmalonic acid assay recommended?
150-300 ng/L
In what way is the schilling test useful?
It provides information about the source of the B12 deficiency
Which conditions affect the intestinal absorption of B12?
SIBO
IBD
Tapeworm infections
What form must B12 leave the stomach in order to be absorbed?
R factor bound B12
Which conditions or states negatively affect the oral phase of B12 absorption?
Sympathetic state
Sjogren’s syndrome
What are sxs of B12 deficiency?
Macrocytic anemia
GI disturbances such as anorexia and diarrhea
Numbness and paresthesia in extremities
(T or F) Folate deficiency leads to neurologic deficits.
False
What conditions/populations are associated with increased risk of folate deficiency?
Pregnancy
Alcohol abuse
Malabsorption syndromes
Tropical sprue
What is the suggested supplementation ratio of zinc to copper?
15mg zinc
to
1mg copper
Which mineral is essential for mobilization of iron from both enterocytes and ferritin?
Copper
