{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T04:27:40Z","timestamp":1791433660216,"version":"4.3.3"},"reference-count":30,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T00:00:00Z","timestamp":1748304000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Background\/Objectives: Near-infrared spectroscopy (NIRS) enables the non-invasive assessment of cerebral oximetry, offering insights into the efficacy of oxygen supply to the brain. NIRS, when combined with other monitoring techniques such as capnography, may play a crucial role in advanced patient monitoring during sudden cardiac arrest and post-resuscitation treatment. This research assessed the relationship between end-tidal carbon dioxide (ETCO2) and regional cerebral oxygen saturation (rSO2) during cardiopulmonary resuscitation. Methods: The research was performed from 11 January 2023 until 31 January 2024, at the University Hospital in Poland. The cohort of responders included patients who had in-hospital cardiac arrest (IHCA). The Rapid Response Team attached the rSO2 and ETCO2 monitoring devices to each patient during cardiopulmonary resuscitation (CPR). The cohort included 104 patients. Results: The correlation coefficient between ETCO2 and rSO2 values was 0.641 (95% CI: 0.636\u20130.646), and during the last 4 min of CPR before ROSC, it was 0.873 (95% CI: 0.824\u20130.910). Conclusions: The positive correlation between ETCO2 and rSO2 may suggest that concurrent monitoring of both parameters during resuscitation might serve as a valuable predictor of CPR efficacy and the likelihood of achieving recovery of spontaneous circulation in a multimodal framework. In the lack of rapid ETCO2 monitoring capabilities, rSO2 may function as a simple and effective alternative for assessment.<\/jats:p>","DOI":"10.3390\/jcm14113747","type":"journal-article","created":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T09:29:36Z","timestamp":1748338176000},"page":"3747","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Correlation Between End-Tidal Carbon Dioxide and Regional Cerebral Oxygen Saturation During Cardiopulmonary Resuscitation"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0151-5623","authenticated-orcid":false,"given":"Mateusz","family":"Putowski","sequence":"first","affiliation":[{"name":"Collegium Medicum, Jan Kochanowski University of Kielce, 25-369 Kielce, Poland"},{"name":"Center for Innovative Medical Education, Jagiellonian University Medical College, 31-008 Cracow, Poland"},{"name":"Department of Anesthesiology and Intensive Care, University Hospital, 31-501 Cracow, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Magdalena","family":"Dudzikowska","sequence":"additional","affiliation":[{"name":"Collegium Medicum, Jan Kochanowski University of Kielce, 25-369 Kielce, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wojciech","family":"Wieczorek","sequence":"additional","affiliation":[{"name":"Department of Emergency Medicine, Medical University of Warsaw, 02-005 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2140-9732","authenticated-orcid":false,"given":"Michal","family":"Pruc","sequence":"additional","affiliation":[{"name":"Department of Clinical Research and Development, LUXMED Group, 02-678 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0973-5455","authenticated-orcid":false,"given":"Lukasz","family":"Szarpak","sequence":"additional","affiliation":[{"name":"Department of Clinical Research and Development, LUXMED Group, 02-678 Warsaw, Poland"},{"name":"Institute of Medical Science, Collegium Medicum, The John Paul II Catholic University of Lublin, 20-950 Lublin, Poland"},{"name":"Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX 77030, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8033-3977","authenticated-orcid":false,"given":"Zbigniew","family":"Siudak","sequence":"additional","affiliation":[{"name":"Collegium Medicum, Jan Kochanowski University of Kielce, 25-369 Kielce, Poland"},{"name":"Department of Clinical Research and Development, LUXMED Group, 02-678 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e021572","DOI":"10.1161\/JAHA.121.021572","article-title":"Temporal Trends in Characteristics and Outcomes Associated with In-Hospital Cardiac Arrest: A 20-Year Analysis (1999\u20132018)","volume":"10","author":"Wu","year":"2021","journal-title":"J. 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