NUTR 2050 Lecture Notes - Lecture 9: Dietary Reference Intake, Stillbirth, Lunch Meat
24 Oct 2016
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Average = 38 weeks: menstrual age. Assessed from onset of last menstrual period. Less than 37 weeks: post term = overdue. Two phases: maternal anabolic (weeks 1-20) 10% of fetal growth: maternal catabolic (weeks 20-40) Stored energy and nutrients to the fetus. Maternal physiology: changes in maternal body composition and functions occur in a sequence: Result from increased plasma and extracellular volume and amniotic fluid. Carb metabolism: glucose is preferred fuel for fetus ( Anabolism: fetus gains glucose form dietary glucose and dietary. Catabolism: fetus gains glucose from fat stores. Results in maternal insulin resistance: about 925g of protein accumulated for new maternal and fetal tissue, no extra protein stored; less for energy and more for protein synthesis, additio(cid:374)al (cid:374)eed for protei(cid:374) (cid:373)et by (cid:373)other"s i(cid:374)take. Fat metabolism: accumulate in first of pregnancy, the anabolic phase, enhanced fat mobilization in the second 1/2, the catabolic phase, blood lipids increase. Higher than desired cholesterol and triglycerides in 3rd trimester.
