Sleep-related hypoxemia is a better indicator of atrial fibrillation (AF) risk than the commonly-used apnea-hypopnea index (AHI), new research suggests. "Our findings suggest the importance of looking more at hypoxia when doing a sleep study and trying to stratify cardiovascular risk," co-investigator Catherine Heinzinger, DO, of the Cleveland Clinic, Ohio, told Medscape Medical News. "There have been multiple studies showing that higher AHI, indicating more severe sleep apnea, is associated with atrial fibrillation. But pathologically, it makes a lot more sense that it would be the hypoxia or the gas exchange issues that are a result of sleep apnea that would be affecting the cardiovascular system," Heinzinger said. Full article - [www.medscape.com] https://www.afibbers.org/forum/read.php?9,185805,185805#msg-185805 Sun, 20 Sep 2026 11:13:17 +0000 Phorum 5.2.23 https://www.afibbers.org/forum/read.php?9,185805,185809#msg-185809 https://www.afibbers.org/forum/read.php?9,185805,185809#msg-185809
Dominik Linz has many papers on AF and OSA.

[pubmed.ncbi.nlm.nih.gov]

As does Prash Sanders

[pubmed.ncbi.nlm.nih.gov]

Mike Mutzel is solid on mouth taping

[highintensityhealth.com]]]> PavanPharter AFIBBERS FORUM Thu, 09 Jun 2022 17:54:33 +0000 https://www.afibbers.org/forum/read.php?9,185805,185806#msg-185806 https://www.afibbers.org/forum/read.php?9,185805,185806#msg-185806
I specifically train CO2 tolerance through slow breathing and breath holds. Because of the Bohr effect, when CO2 levels are higher, hemoglobin releases O2 into the cells more readily. One of the ways I train is to keep my lips taped during sleep. This insures nasal breathing and lower probability of hyperventilation, which would lead to reduced serum CO2 levels. In this post, you can see the impact on beat to beat heart rate in me with and without mouth tape.]]> GeorgeN AFIBBERS FORUM Thu, 09 Jun 2022 16:21:20 +0000 https://www.afibbers.org/forum/read.php?9,185805,185805#msg-185805 https://www.afibbers.org/forum/read.php?9,185805,185805#msg-185805
"Our findings suggest the importance of looking more at hypoxia when doing a sleep study and trying to stratify cardiovascular risk," co-investigator Catherine Heinzinger, DO, of the Cleveland Clinic, Ohio, told Medscape Medical News.

"There have been multiple studies showing that higher AHI, indicating more severe sleep apnea, is associated with atrial fibrillation. But pathologically, it makes a lot more sense that it would be the hypoxia or the gas exchange issues that are a result of sleep apnea that would be affecting the cardiovascular system," Heinzinger said.

Full article - [www.medscape.com]]]> PavanPharter AFIBBERS FORUM Thu, 09 Jun 2022 14:19:03 +0000