Sudden Infant Death Syndrome (SIDS) is a type of sudden and unexpected infant death, a term that encompasses both deaths from SIDS and ultimately all unexpected infant deaths with a determined cause. 1 Between %27 and % 43 of 3500 sudden unexpected infant death cases in the USA annually are due to SIDS. 2, 3 A number of other terms are used in pediatrics to describe sudden and unexpected deaths. Sudden unexpected death of an infant can be used interchangeably with sudden unexpected infant death, and sudden death in youth (VAS) refers to such death in any child 19 years of age or younger. Sudden unexplained early neonatal death is limited to infants who die within the first week of life and is usually congenital. anomaly is caused. Sudden intrauterine unexpected death syndrome refers to stillbirths for which postmortem examination cannot identify a cause, and sudden unexpected death in epilepsy is unexpected death in a person with epilepsy (excluding trauma or suffocation) for which postmortem examination does not reveal an anatomical or toxicological cause.