Nutrition Flashcards
Major digestive juices in the stomach
Hydrochloric acid and pepsin
Major site of absorption
Small intestine
Major site of water absorption
large intestine
Amount of energy yielded from Carbs and Protein:
4 kcal/g
amount of energy yielded for fats
9 kcal/g
Gluconeogenesis
the formation of glucose from non CHO sources, takes place in the liver
Protein deficiency with inadequate calorie intake
Marasmus
Protein malnutrition with plenty of carbohydrate
Kwashiorkor
Amount of protein required for adults:
20-35% of calories.
Amount of carbohydrate required for adults:
45-65% of total calories
FIber in the diet helps to:
improve laxation, reduces risk of CAD, assists in maintaining normal blood glucose levels
which type of fiber can have caloric value?
soluble Fiber. some energy produced when broken down and absorbed by the body. approx 2 kcal.g
what does insoluble fiber do?
acts as a stool softener
Vitamin B1
Thiamin
Condition caused by Thiamin deficiency?
Beriberi
Korsakoff syndrome
memory loss and neurologic symptoms associated with deficiency of Thiamin
Vitamin B2
Riboflavin
Riboflavin is a co-factor for FAD, which is used in:
TCA cycle and fatty Beta-oxidation
Vitamin B3
Niacin
Niacin is a co-factor for NAD, which is used in:
TCA cycle and fatty beta-oxidation
Severe symptom of Niacin deficiency?
Pellagra with the 3 D’s: Diarrhea, Dementia, Dermatitis and sometimes Death
Symptom of Niacin toxicity?
Flushing, gastric irritation, gout exacerbation
Vitamin B6
Pyroxidine
Vitamin B12
Cyanocobalamin
Vitamin B9
Folate
Vitamin B5
Pantothenic acid
Vitamin B7
Biotin
Ascorbic Acid
Vitamin C
Deficiency of vitamin C?
Scurvy
Retinol
Vitamin A
Leading cause of childhood blindness and night blindness?
Vitamin A deficiency
Which vitamin is the most toxic of all vitamins?
vitamin A
What does Vitamin D do?
regulates blood calcium levels, bone health, immune function, inflammation
D deficiency in kids?
Rickets - impaired mineralization of growing bones
D deficiency in adults?
Osteomalacia - poorly mineralized skeleton
How many minutes of sun is required for adequate D synthesis?
15+ minutes daily
Major function of vitamin E?
Antioxidant - protects cell membranes
Which lab test checks vitamin E levels?
serum alpha-tocopherol
Major function of Vitamin K?
activates part of the clotting cascade
Signs of calcium deficiency?
Rickets in kids, osteomalacia in adults. which may contribute to osteoporosis, muscle spasms, ventricular arrhythmia
Which mineral is strongly intertwined with Calcium and D?
Phosphorus (so can see rickets too)
Main function of potassium?
transmits nerve impulses (esp cardiac)
Signs of K deficiency
muscular weakness, paralysis, mental confusion, cardiac arrhythmia
Diagnostic workup for all electrolytes:
serum electrolyte, urine electrolyte, and urine osmolarity
Normal range for LDLs?
less than 130
Normal range for HDLs?
Greater than 60
Normal value for TC?
less than 200
Normal value for Lipoprotein A?
less than 30
Normal range for TG?
Less than 165
What is the function of chylomicrons?
Formed in the intestines and they transport lipids to the liver and are metabolized there
Cholesterol plays a role in?
membranes, steroid hormones and bile acids
What is used for energy by muscles?
triglycerides
What does the NCEP recommend for prevention screening in adults?
A fasting lipid profile every 5 years for adults age 20 and over
If a patient has a hx of CAD or metabolic syndrome, what is their goal LDL value?
less than 70
If a patient is at high risk with risk factors and family history, what is their goal LDL value?
Less than 100
Someone with FH, you would expect to see what values of LDL?
Homozygous - greater than 500, Heterozygous 250-500
Familial hyperChylomicronemia has abnormal…
lipoprotein lipase (allows VLDL back to chylomicrons)
If someone has high TG, what is the first step in treatment?
- Administer a fibrate, 2. Omega-3’s, then statin.
Which medication is the best HDL increasing med?
Niacin
A side effect of hypertriglyceridemia?
Recurrent pancreatitis and hepatosplenomegaly
What are secondary causes of high TG?
Diabetes and alcohol abuse
True or false, most patients with high cholesterol levels have no specific symptoms or signs?
True. Most are detected by the laboratory