{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T06:59:27Z","timestamp":1777532367030,"version":"3.51.4"},"reference-count":38,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2025,4,1]],"date-time":"2025-04-01T00:00:00Z","timestamp":1743465600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2025,4,1]],"date-time":"2025-04-01T00:00:00Z","timestamp":1743465600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/100009045","name":"Jagiellonian University Medical College","doi-asserted-by":"crossref","award":["N41\/DBS\/001183"],"award-info":[{"award-number":["N41\/DBS\/001183"]}],"id":[{"id":"10.13039\/100009045","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Chron Respir Dis"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:p>\n                    <jats:bold>Background:<\/jats:bold>\n                    Almost 20% of Polish citizens aged &gt;15\u00a0years are obese and this number is increasing. Numerous obesity-associated diseases include, quite notably, also sleep-related breathing disorders and hypoventilation. This study aimed to analyse the prevalence of obesity hypoventilation syndrome (OHS) and hypoventilation staging in a group of patients qualified for bariatric surgery within the Comprehensive Specialist Care in Bariatrics (KOS-BAR) pilot program designed and running in Poland since 2021.\n                    <jats:bold>Methods:<\/jats:bold>\n                    Prior to the bariatric procedure, the participants were referred to a pulmonologist for assessment. We retrospectively analysed the records of 134 patients.\n                    <jats:bold>Results:<\/jats:bold>\n                    Almost all of the tested bariatric patients (\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    = 122, 91.0%) had obstructive sleep apnea mainly classified as severe (59.0%). Hypoventilation was confirmed in 30 patients (22.4%), and in 37.9% of them, increased levels of serum bicarbonate were found. Chronic diurnal hypercapnia was confirmed in 7.9% of patients (10\/122).\n                    <jats:bold>Conclusions:<\/jats:bold>\n                    Hypoventilation as well as obstructive sleep apnea in the obese population is a significant issue. The presented study group included patients in stages 0\u2013IV of obesity-associated hypoventilation. The conducted analysis suggests that the most common form of hypoventilation among patients qualified for bariatric surgery is obesity-associated sleep hypoventilation (stage I).\n                  <\/jats:p>","DOI":"10.1177\/14799731251338269","type":"journal-article","created":{"date-parts":[[2025,4,25]],"date-time":"2025-04-25T17:55:18Z","timestamp":1745603718000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Staging of obesity-associated hypoventilation in patients with morbid obesity scheduled for bariatric surgery"],"prefix":"10.1177","volume":"22","author":[{"given":"Aleksander","family":"Kania","sequence":"first","affiliation":[{"name":"Jagiellonian University Medical College"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6251-5945","authenticated-orcid":false,"given":"Justyna","family":"T\u0119czar","sequence":"additional","affiliation":[{"name":"Jagiellonian University Medical College"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Natalia","family":"Celejewska-W\u00f3jcik","sequence":"additional","affiliation":[{"name":"Jagiellonian University Medical College"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Piotr","family":"Major","sequence":"additional","affiliation":[{"name":"Jagiellonian University Medical College"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kamil","family":"Polok","sequence":"additional","affiliation":[{"name":"Jagiellonian University Medical College"},{"name":"Jagiellonian University Medical College"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,4,25]]},"reference":[{"key":"e_1_3_6_2_2","volume-title":"Odsetek os\u00f3b w wieku powy\u017cej 15 lat wed\u0142ug indeksu masy cia\u0142a (BMI)","author":"GUS","year":"2020","unstructured":"GUS. 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