[Polysomnography in the prevention of crib death].
The authors stress the importance of polysomnography--a new electrophysiologic method--in the prevention of SIDS (cot death). SIDS is the most important and frequent cause of infant mortality between 1 and 12 months of age in western countries (nowadays between 1-2/1000!). In Hungary the frequency is not so high. In the last few years the incidence declined after the "back to sleep" campaigns, but to reach further success, it is very important to seek the so called "risk" babies. The unique cause of cot death is not yet understood exactly, but some instability in respiration (mostly during the sleep) is one of the accepted principal basic factors. The mentioned new method helps in choosing the SIDS risk infants from the "normal" population, allows to examine their respiratory irregularity or even disorders during the sleep and gives possibility for the prevention of lethal apneas. The authors describe the details of the prevention in case of abnormal polysomnography in their other publications.