TY - CHAP M1 - Book, Section TI - Chapter 183. Environmental Causes of Birth Defects A1 - Balken, Elizabeth A1 - Leen-Mitchell, Marsha A1 - Martinez, Lynn P. A1 - Robertson, Julia A. A2 - Rudolph, Colin D. A2 - Rudolph, Abraham M. A2 - Lister, George E. A2 - First, Lewis R. A2 - Gershon, Anne A. Y1 - 2011 N1 - T2 - Rudolph's Pediatrics, 22e AB - The definition of a teratogenic agent (an exposure, external to the fetal genome, that induces structural or functional alterations during prenatal development) suggests that the clinicians’ first encounter may be well after the exposure has occurred. Knowledge of the principles of teratology can direct diagnostic and treatment approaches to a child with dysfunction or dysmorphology of unknown etiology and can be instrumental in guiding initial evaluations as well as physician–patient–parent interactions. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/10/15 UR - accesspediatrics.mhmedical.com/content.aspx?aid=7018001 ER -