lecture 2 outline- pregnancy

lecture 2 outline- pregnancy - Lecture 2 - Pregnancy...

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Lecture 2 - Pregnancy Prelude to Pregnancy *Body Weight *Diet *Physical Activity *Environmental Factors 2010 Nutrition Objectives Related to Pre-Conception *Healthy weight adults (42-60%) * obesity (23 to 15%) * Iron deficiency in children and females of childbearing age (1-7%) *Preconceptual counseling (risk assessment) Fertility Concerns *Weight loss >15% *Excessive body fat (body fat- hormonal rein, see table 3.2 in text) *Extreme exercise *R-OH *Endocrine disorders e.g. hypothyroidism, Diabetes *Metabolic disorders eg. Celiac disease, PKU * Carotenemia *Age Normal Pregnancy *Institute of Medicine, 1990 * 1
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*Normal Weight Gain in Mom *Prompt Onset of Lactation Weight Gain In Pregnancy *Mom: *IBW (BMI 18.5 - 24.9) - ______________________ *UBW (BMI < 18.5) - _________________________ *OBW (BMI > 25.1 ) - ________________________ *2 - 8 lb during Trimester 1 & average of 0.8 lb/wk thereafter. Total at least 15 lb *Baby * * *> 8.8 lb, high birth weight *maternal stores * * *breasts and muscle tissue *amniotic fluid Development Wt. Gain (lb) Infant at Birth 7.5 Placenta 1.5 Mother’s Blood Vol. 4 Mother’s Fluid Vol. 4 2 Mother’s breasts 2 2
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Amniotic Fluid 2 Mother’s Fat Stores 7 Total 30 Risk Factors * *Hx of poor pregnancy outcome *Close pregnancies * *Lack of Family Support * * *Smoking, Alcohol or Drug Addiction *> 15% underweight or overweight. BMI < 20 or > 27.0 *Chronic Disease *1st pregnancy * Ecological Factors * * *Socio-demographics * * Adverse Outcomes *Miscarriages/ spontaneous abortions * 3
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* *Premature birth * *Low birthweight *Respiratory Distress Maternal Physiology See Tables 4.6 and 4.7 Maternal Tissue and organs (Uterus, Breasts, heart, thyroid, liver, kidneys) Blood volume & hemodilution (20% blood vol. incr., 50% plasma vol.inc., and edema in 60-75% of women Lipids Glucose BMR and temperature Placenta and umbilical cord Hormones (hCG, hCS, PL, Progest., Estrogen, etc) respiration, absorption, excretion, immunity Placenta Derived from Latin word “cake” Larger than fetus for most of pregnancy Functions: Hormone and enzyme production Nutrient and gas exchange (passive & facilitated diffusion, active transprt; endocytosis) Removal of waste products Barrier to harmful compds– mat. RBC, bacteria, large proteins 4
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This note was uploaded on 04/02/2010 for the course HNF 453 taught by Professor Weatherspoon during the Spring '08 term at Michigan State University.

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lecture 2 outline- pregnancy - Lecture 2 - Pregnancy...

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