Chapter 6 Teratogens Flashcards Preview

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Flashcards in Chapter 6 Teratogens Deck (17):
1

Teratogens

= substances or events
Alcohol, nicotine, or amount of nutrition
mom being kicked in stomach, heat, or radiation
Any drug or chemical agent that causes abnormal development in a fetus upon exposure
Depend on when the fetus was exposed to the substance and the amount of the substance

2

Thalidomide

Damage depended on timing of exposure in embryonic period

3

Tobacco

Risk of LBW
Increased mortality
Miscarriage
Mentally retarded
Respiratory diseases

4

Alcohol

Detrimental structural and psychological effects

Fetal Alcohol Syndrome (FAS)
Fetal Alcohol Effect (FAE)

5

Fetal Alcohol Syndrome

Growth
Brain
Face
Mentally retarded (IQs 65- 70)
Behavior

6

Fetal Alcohol Effect

Mentally retarded
Behavior

7

Design Issues in Alcohol Research

Amount of control
Can only do naturalistic studies
Cannot do lab studies (no random assignment)
Ethics
Cannot assign groups
Biases
Experimenter: no blind studies
Subject: cannot measure truth about amount of drink

8

Validity issues in alcohol research

Moms who drink during pregnancy…
Control group

9

Implications

Understanding developmental periods
Long-term exposure
Interventions during pregnancy

10

Weight Gain During Pregnancy
Underweight

18.5 BMI
28-40 lb

11

Weight Gain during Pregnancy
Normal

18.5-24.9 BMI
25-35 lb

12

Weight Gain During Pregnancy
Overweight

25-29.9 BMI
15-25 lb

13

Weight Gain During Pregnancy
Obese

> 30 BMI
11-20 lb

14

Where does weight gain come from?

Baby: 5-9 lbs
Placenta: 1-2 lbs
Amniotic fluid: 3-5 lbs

Extra weight of breasts, uterus, fat, & protein stores: 4 -11 lbs
Increased blood volume and fluid volume: 4 - 9 lbs

15

Exercise During Pregnancy

Helps with:
Chronic Hypertension
Gestational Diabetes
Weight gain during pregnancy
C-section
Preterm delivery
Birth weight

16

Exercise Recommendations

Low impact aerobic exercise
Strength exercise

17

Maternal & Fetal Response to Exercise

Maternal Response:
Blood volume & cardiac output
Body temperature
Fetal Response:
Fetal heart rate