Below is a small excerpt from the article "Sleep disorders associated with alcohol use and abuse," available at Medlink Neurology:
Alcohol use should be avoided during pregnancy. The potential adverse physical and neurocognitive effects, including fetal alcohol syndrome, of maternal alcohol consumption on the developing fetus have been extensively reviewed (Wattendorf and Muenke M 2005). Recent research has clarified the effects of prenatal alcohol consumption on the child’s postnatal sleep. Maternal prenatal consumption of alcohol results in infant postnatal sleep fragmentation as well as the suppression of spontaneous movements during sleep, at 6 to 8 weeks of age (Troese et al 2008). In utero alcohol exposure results in altered neonatal autonomic control during sleep, possibly increasing the risk of Sudden Infant Death Syndrome (Fifer et al 2009).
Wattendorf DJ, Muenke M. Fetal alcohol spectrum disorders. Am Fam Physician 2005;72(2):279-82, 285.
Troese M, Fukumizu M, Sallinen BJ, Gilles AA, Wellman JD, Paul JA, Brown ER, Hayes MJ. Sleep fragmentation and evidence for sleep debt in alcohol-exposed infants. Early Hum Dev 2008;84(9):577-85.
Fifer WP, Fingers ST, Youngman M, Gomez-Gribben E, Myers MM. Effects of alcohol and smoking during pregnancy on infant autonomic control. Dev Psychobiol 2009;51(3):234-42.