*NURSING > STUDY GUIDE > NR 228 - Exam 2 Outlines and Review. Complete Study Guide. (All)

NR 228 - Exam 2 Outlines and Review. Complete Study Guide.

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NR 228 - Exam 2 Outlines and Review. Complete Study Guide. Week 4 Outline: Chapters 7. 8. And 17 What are vitamins?  Organic molecules needed in very small amounts for cellular metabolism  ... Perform specific metabolic functions Water Soluble Vitamins o Dissolve in water & are readily available o Not stored in our body o Excess water-soluble vitamins are quickly excreted in urine. They do not accumulate and become toxic o Vitamin C taken in excess can cause diarrhea Vitamin B1 (thiamine)  Use: helps to release energy from foods and is important in maintaining nervous system function  RDA: men = 1.2 mg; women = 1.1 mg  Source: lean pork, whole or enriched grains and flours, legumes, seeds, nuts  Deficiency o Ataxia (muscle weakness/loss of coordination) and tachycardia (rapid heartbeat) o Wernicke-Korsakoff syndrome: a cerebral form o Marginal: psychologic disturbances, headache, fatigue, irritability  Risk factors o Alcoholism, renal dialysis, parenteral nutrition, human immunodeficiency virus / acquired immunodeficiency syndrome (HIV/AIDS), persistent vomiting (as in hyperemesis gravidarum), anorexia nervosa, gastrectomy  Toxicity: nontoxic Vitamin B2 (riboflavin)  Use: promotes vision and healthy skin, converts amino acid tryptophan into niacin  RDA: men = 1.3 mg; women = 1.1 mg  Source: milk, enriched grains and cereals, whole grains, vegetables, dairy, meats, fish, poultry, eggs  Deficiency: o Ariboflavinosis (sores in the mouth) o Cheilosis, glossitis, seborrheic dermatitis [Show More]

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