Lecture 7: Reproductive and Developmental Toxicology (Yager)
Lecture 7: Reproductive and Developmental Toxicology (Yager)
Lecture 7: Reproductive and Developmental Toxicology (Yager)
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Frequencies of Selected <strong>Reproductive</strong><br />
Failures<br />
Event<br />
Per 100<br />
Failure to conceive after one year 10–15 Couples<br />
Frequency<br />
Unit<br />
Spontaneous abortion 8–28 weeks 10–20 Pregnancies or women<br />
Chromosome anomalies in<br />
spontaneous abortions, 8–28 weeks<br />
Chromosome anomalies from<br />
amniocentesis, > 35 years<br />
30–40<br />
2 Amniocentesis specimen<br />
Stillbirths 2–4 Stillbirths <strong>and</strong> live births<br />
Birth weights < 2,500 g 7 Live births<br />
Birth defects 2–3 Live births<br />
Chromosome anomalies, live births 0.2 Live births<br />
Severe mental retardation 0.4 Children to age 15 years<br />
5
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