Snoring and myocardial infarction: a 4-year follow-up study

The association between snoring and myocardial infarction was studied in 14 53 people of both sexes aged 20-70 years. The study was carried out in a po pulation of 92 364 residents and the subjects Here recruited using the Elec toral Census. A questionnaire was sent to all participants, asking about sn oring and cardiovascular risk factors. Hospital records were checked for th e nest 4 years to establish how many of them developed myocardial infarctio n. At the beginning of the follow-up study 39 patients were diagnosed with ischaemic heart disease. Of the other 1414 participants. 571 (40.4%) were s norers and 843 (59.6%) non-snorers. Twenty-one developed myocardial infarct ion in the snorer group and four in the non-snorer group. The snorer group presents an adjusted relative risk of myocardial infarction of 3.08 (95% CI 1.01-9.46) with respect to non-snorers. We conclude that snoring seems to be a potential risk factor for myocardial infarction.