SIDS Program Manual SIDS & Infant Death Program Manual and Trainer's Guide Trainer's Guide

Appendix B

Glossary

Positional Asphyxia: Also known as postural asphyxia; a form of suffocation due to physical restriction of breathing mechanisms. For example, bedsharing and overlay can result in positional asphyxia. Children less than two years of age are more susceptible especially when sleeping on couches and adult beds.

Prematurity/Preterm Birth: Birth that occurs before 37 weeks of gestation.
Mortality Rates:

Late Fetal Death and Infant Deaths During Perinatal Period Rate is the number of fetal deaths with stated or presumed gestation of 28 weeks or more to 7 days after birth divided by the sum of live births plus late fetal and perinatal deaths, stated per 1,000 live births plus late fetal deaths.

  Late Fetal Death and Infant Deaths During Perinatal Period Rate =   Number of Fetal and Infant Deaths (28 Weeks or More to 7 Days After Birth) x 1,000

Live Births + Late Fetal Deaths and Infant Deaths
 

Infant Mortality Rates (IMRs) are based on the number of infant deaths during a calendar year divided by the number of live births reported in the same year. It is expressed as the number of infant deaths per 1,000 live births. The Healthy People 2010 goal is 4.1 deaths per 1,000 live births.

  Infant Mortality Rate =   Number of Infant Deaths During Calendar Year x 1,000

Number of Live Births in the Same Year
 

Neonatal Mortality Rate is the number of deaths of infants less than 28 days of age per 1,000 live births.

  Neonatal Mortality Rate =   Number of Infant Deaths (0 to 28 Days) x 1,000

Number of Live Births in the Same Year
 

Postneonatal Mortality Rate is the number of deaths of infants that occur between 28 days and 365 days after birth per 1,000 live births.

  Postneonatal Mortality Rate =   Number of Infant Deaths (28 to 365 days) x 1,000

Number of Live Births in the Same Year
 

Perinatal Mortality Rate is the sum of late fetal deaths plus infant deaths within 7 days of birth divided by the sum of live births plus late fetal deaths per 1,000 live births plus late fetal deaths. Perinatal relates to the period surrounding the birth event. Rates and ratios are based on events reported in a calendar year. Perinatal mortality ratio is the sum of late fetal deaths plus infant deaths within 7 days of birth divided by the number of live births per 1,000 live births.

  Perinatal Mortality Rate =   Late Fetal Deaths + Infant Deaths (0 to 7 days) x 1,000

Live Births + Late Fetal Deaths
 

Rebreathing: Refers to breathing in exhaled air. Infants can experience excessive levels of carbon dioxide gas when they rebreath air trapped in soft bedding and pillows.

footer