{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T20:10:12Z","timestamp":1791576612483,"version":"4.3.4"},"reference-count":23,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2005,12,7]],"date-time":"2005-12-07T00:00:00Z","timestamp":1133913600000},"content-version":"vor","delay-in-days":7464,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pediatric Pulmonology"],"published-print":{"date-parts":[[1985,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The pediatric pneumogram is a frequently used tool in the diagnosis and management of apnea during infancy. We analyzed 287 pneumographic recordings from 123 full\u2010term infants (63 males) obtained during the first 12 months of life to establish normative values for apnea, periodic breathing, and bradycardia. The results of the analysis were compared by sex and age. The number of infants who exhibited periodic breathing decreased significantly over time (78% at 0\u20132 weeks vs 29% at 39\u201352 weeks; <jats:italic>P<\/jats:italic> &lt; 0.05). However, for those infants who did breathe periodically, the percent of sleep time spent in this breathing pattern did not change with age. No apnea \u2265 15 seconds was recorded in any infant, and apnea density (total apnea \u2265 10 seconds in minutes\/100 minutes sleep time) did not change with age or sex. Using our definitions, no bradycardia was identified. Normal full\u2010term infants occasionally have apnea of 10, 11, or 12 seconds, and, until 6 months of age, the majority will have a small amount of periodic breathing (&lt; 1% of sleep time) during sleep at home.<\/jats:p>","DOI":"10.1002\/ppul.1950010409","type":"journal-article","created":{"date-parts":[[2007,3,6]],"date-time":"2007-03-06T11:52:22Z","timestamp":1173181942000},"page":"215-219","source":"Crossref","is-referenced-by-count":99,"title":["Apnea and periodic breathing in normal full\u2010term infants during the first twelve months"],"prefix":"10.1002","volume":"1","author":[{"given":"Dorothy H.","family":"Kelly","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lisa M.","family":"Stellwagen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ellen","family":"Kaitz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel C.","family":"Shannon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2005,12,7]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.186.4166.837"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1093\/ajcp\/66.3.526"},{"key":"e_1_2_1_4_2","first-page":"547","article-title":"Brown fat retention in sudden infant death syndrome","volume":"100","author":"Valdes\u2010Dapena MA","year":"1976","journal-title":"Arch Pathol Lab Med"},{"key":"e_1_2_1_5_2","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1542\/peds.63.1.18","article-title":"Increased muscularity of the pulmonary circulation in victims of sudden infant death syndrome","volume":"63","author":"Williams A","year":"1979","journal-title":"Pediatrics"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/ana.410040312"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1542\/peds.50.4.646"},{"key":"e_1_2_1_8_2","doi-asserted-by":"crossref","first-page":"837","DOI":"10.1542\/peds.63.6.837","article-title":"Obstructive sleep apnea and near\u2010miss SIDS: 1. 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