NURS 216 Lecture Notes - Lecture 25: Vitamin D Deficiency, Bone Resorption, Calcitriol
24 Jan 2020
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No storage excretion (e. g. vitamin c) Gi absorbed absorption inducers: lipids e. g. raw carrot vs. carrots with meal. Stored in liver & adipose (can be easily. Vitamin d: has a large therapeutic index, used as an adjunct for depression. Elderly vitamin d intake: should combine vitamin d supplementation with calcium. Infants: do not get enough vitamin d from breastmilk. Can od: fatigue, gi pain, n&v, renal changes. For vitamin d deficiency due to gi, liver and renal dysfunction. Vitamin d increases gi absorption of calcium high plasma calcium parafollicular cells in thyroid release calcitonin stimulates ca bone absorption bone deposition. Low plasma ca: pth released ca resorption from bone & increased absorption of ca from. Vitamin d activates the active transport of calcium & enhances cellular uptake of calcium. Estrogen and prolactin also enhances this effect. Aging = low estrogen and decreased rate of gi function.
