Prenatal Development and Newborns

The fetal stage, from the ninth week until birth, involves major organ system development. By the 12th week, fingers and toes are formed. The fetus increases in weight and size. The age of viability, around 24 weeks, marks the point where the fetus can potentially sustain life independently, though survival chances are initially low with high risks of physical and cognitive issues.

Good maternal nutrition, especially folic acid, is crucial for healthy fetal development and preventing neural tube defects. Teratogens, environmental agents that can harm the developing embryo or fetus, pose the greatest risk during critical development periods. Early pregnancy is the most vulnerable time, and higher teratogen levels or multiple teratogens are more dangerous.

Viruses like rubella and STIs can cause birth defects. Smoking leads to miscarriage, premature birth, low birth weight, infant mortality, and abnormal brain development in children. Alcohol consumption can result in fetal alcohol syndrome, leading to intellectual disability and physical deformities. There is no safe limit for alcohol use during pregnancy according to the American Academy of Pediatrics.

Socioeconomic status, encompassing income, education, and occupation, impacts child development. Poverty affects nutritional status, healthcare access, and overall well-being. Children in poverty may lack supervision due to parents working multiple jobs, impacting parent-child interactions and language development. Economic and emotional stressors from poverty can affect child functioning and family dynamics.

Newborns are born with reflexes like rooting, sucking, grasping, and Moro reflexes. These reflexes are crucial for survival and indicate health. Newborns have all five senses but sight isn't fully developed; they see best at close range and focus improves gradually. Hearing is fully developed, and they prefer higher-pitched voices. They also have a strong sense of smell and prefer sweet tastes.

Touch comforts babies. Swaddling or cuddling can help babies to feel secure, it is however important that swaddling safety is discussed with a doctor, due to the possibility of SIDS. Key takeaways include understanding prenatal development stages, teratogen effects, socioeconomic impacts, and newborn characteristics. The presentation concludes with a view of the next section: cognitive development.