Chapter 4 Slides - Nutrition During Pregnancy Physiology of Pregnancy Physiologic Changes Blood volume Maternal organ tissues Metabolism Hormones

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1 Nutrition During Pregnancy Physiology of Pregnancy • Blood volume • Maternal organ / tissues Physiologic Changes: • Metabolism • Hormones Physiology of Pregnancy Plasma Red cells Blood Volume weeks gestation Increase in Blood Volume
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2 Physiology of Pregnancy Maternal organ adaptation • Cardiovascular • Respiration • Renal • Gastrointestinal Physiology of Pregnancy Metabolic Changes Energy - Basal Metabolic Rate • 1st trimester • 2nd trimester / 3rd trimester Energy yielding nutrients - Carbohydrate Metabolism • 1st half pregnancy - storage of glycogen • 2nd half pregnancy - mobilization of glycogen Gluconeogenisis in maternal liver Decreased maternal use of glucose Physiology of Pregnancy - Increased maternal use of fat - Glucose diverted to fetus - Protein Metabolism • Increase protein synthesis
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3 - Fat Metabolism • 1st half pregnancy- accumulation fat stores • 2nd half pregnancy - mobilization of fat stores Increase in blood lipoproteins / fatty acids Increase utilization of fat for maternal energy Physiology of Pregnancy Increase insulin secretion Increase insulin resistance Normal Pregnancy Glycogen synthesis Fat synthesis Blood glucose > fetal use glycogen synthesis gluconeogenisis Fat mobilization > maternal use lipolysis Glucose Fatty Acids Glycerol 2nd Half Pregnancy - Glucose / Fat Utilization Triglycerides Maternal use Fetal use Glycogen Amino acids Protein
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Glucose Protein Amino Acids Fatty Acids Glycerol Ketone Bodies Triglycerides Maternal use Fetal use Glycogen Fasting > 12 Hours Causes Ketosis Hormones - Placental
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This note was uploaded on 04/30/2009 for the course NTR 315 taught by Professor Steinman during the Spring '08 term at University of Texas at Austin.

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Chapter 4 Slides - Nutrition During Pregnancy Physiology of Pregnancy Physiologic Changes Blood volume Maternal organ tissues Metabolism Hormones

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