{"id":175,"date":"2020-09-08T06:44:34","date_gmt":"2020-09-08T06:44:34","guid":{"rendered":"https:\/\/www.normalbreathing.com\/blog\/?p=175"},"modified":"2020-09-10T07:24:41","modified_gmt":"2020-09-10T07:24:41","slug":"alveolar-co2-vs-end-tidal-measure-cp","status":"publish","type":"post","link":"https:\/\/www.normalbreathing.com\/blog\/alveolar-co2-vs-end-tidal-measure-cp\/","title":{"rendered":"Alveolar CO2 vs. End-Tidal CO2 to Measure CP and Health"},"content":{"rendered":"<p>I am certain that not only Buteyko practitioners but also some of our students and outside researchers can benefit from this information related to end-tidal CO2 vs alveolar CO2 in measuring health and estimating the Buteyko CP (Control Pause) test result. Here are a couple of the recent messages that I posted on Facebook&#8217;s <a href=\"https:\/\/www.facebook.com\/groups\/455025351194775\/\" target=\"_blank\" rel=\"noopener noreferrer\">Buteyko Practitioners Discussion Forum<\/a>. Facebook may disappear or even close our group, while the group is closed making it impossible to easily access these details:<\/p>\n<ol>\n<li>Posted by Artour Rakhimov on 4th of September 2020:<\/li>\n<\/ol>\n<div dir=\"auto\">End-tidal CO2 has never been a part of the original or classical Buteyko method since none of the Soviet\/Russian patents, trials, or approbations used this value. Instead, you can collect all expired air and measure total CO2 content as it was done in the <a href=\"https:\/\/www.normalbreathing.com\/diseases-cancer-breast-clinical-trial\/\" target=\"_blank\" rel=\"noopener noreferrer\">cancer trial by Dr. Sergey Paschenko<\/a>. More about which CO2 to measure:<\/div>\n<div dir=\"auto\">YouTube video: <a href=\"https:\/\/www.youtube.com\/watch?v=nJ51wfS4uqQ\">Alveolar vs. End-tidal, CO2 in Exhaled Air<\/a> (Buteyko Method):<\/div>\n<p><iframe loading=\"lazy\" title=\"Which CO2 to Measure? Alveolar, End-tidal, Arterial, or Total CO2 in Exhaled Air (Buteyko Method)\" width=\"1080\" height=\"608\" src=\"https:\/\/www.youtube.com\/embed\/nJ51wfS4uqQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<div dir=\"auto\">etCO2 can be particularly misleading when students progress from below 15-20 s CP to 25-30 due to the transition to diaphragmatic breathing.<\/div>\n<div dir=\"auto\"><\/div>\n<div dir=\"auto\">2. Posted by Artour Rakhimov on 7th of September 2020:<\/div>\n<div dir=\"auto\"><\/div>\n<div dir=\"auto\">From what I read in his 60&#8217;s and 80&#8217;s medical articles, it follows that he used capnography and measured expired CO2 together with air velocity (mentioned as &#8220;spirography&#8221;) in real time to define alveolar CO2. It seems that he did not measure chest\/torso displacement for better accuracy. Probably, it was enough for him.<br \/>\nFrom his papers, it is clear that he considered alveolar CO2 as the most accurate CO2 parameters that correlated with states of airways and blood vessels (there are more publications about the effects of the cardiovascular system). That is why alveolar CO2 is the key factor in many of his papers.<br \/>\nWhen someone relies only on the capnography, the information about airflow speed distribution is missing. There can be the same CO2 curve or graph, but with very different airflow velocity distributions and different alveolar CO2 content.<br \/>\nWhen the whole graph is further reduced to one value (end-tidal CO2), there is a further loss of information about what is going on in the lungs. That is likely why <a href=\"https:\/\/www.normalbreathing.com\/courtney-cohen-breath-holding-etco2-study\/\">Rosalba&#8217;s paper did not find any correlation between etCO2 and CP<\/a>, while the alveolar CO2-CP link is the key claim of one of the <a href=\"https:\/\/www.normalbreathing.com\/russian-buteyko-patents\/\">Buteyko&#8217;s patents<\/a>.<\/div>\n<div dir=\"auto\"><\/div>\n<div dir=\"auto\">PS. September 10, 2020. It follows from the above that, for most Buteyko breathing students (or those who progress from Health Level 2 of 10-20 s MCP to Health Level 3 of 20-30 s MCP), measuring etCO2 would not provide any consistent or positive information. It is likely that, for this step in health improvement, one may get a better correlation when measuring their own pulse (heart rate) or breathing frequency. Both these parameters are included in the <a href=\"https:\/\/www.normalbreathing.com\/buteyko-table-of-health-zones\/\" target=\"_blank\" rel=\"noopener noreferrer\">Buteyko Table of Health Zones<\/a>.<\/div>\n","protected":false},"excerpt":{"rendered":"<p>I am certain that not only Buteyko practitioners but also some of our students and outside researchers can benefit from this information related to end-tidal CO2 vs alveolar CO2 in measuring health and estimating the Buteyko CP (Control Pause) test result. Here are a couple of the recent messages that I posted on Facebook&#8217;s Buteyko [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-175","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Alveolar CO2 vs. End-Tidal CO2 to Measure CP and Health - NormalBreathing Blog: Buteyko Method, Breathing Retraining and Health<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.normalbreathing.com\/blog\/alveolar-co2-vs-end-tidal-measure-cp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alveolar CO2 vs. End-Tidal CO2 to Measure CP and Health - NormalBreathing Blog: Buteyko Method, Breathing Retraining and Health\" \/>\n<meta property=\"og:description\" content=\"I am certain that not only Buteyko practitioners but also some of our students and outside researchers can benefit from this information related to end-tidal CO2 vs alveolar CO2 in measuring health and estimating the Buteyko CP (Control Pause) test result. Here are a couple of the recent messages that I posted on Facebook&#8217;s Buteyko [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.normalbreathing.com\/blog\/alveolar-co2-vs-end-tidal-measure-cp\/\" \/>\n<meta property=\"og:site_name\" content=\"NormalBreathing Blog: Buteyko Method, Breathing Retraining and Health\" \/>\n<meta property=\"article:published_time\" content=\"2020-09-08T06:44:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-09-10T07:24:41+00:00\" \/>\n<meta name=\"author\" content=\"Artour Rakhimov\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Artour Rakhimov\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.normalbreathing.com\\\/blog\\\/alveolar-co2-vs-end-tidal-measure-cp\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.normalbreathing.com\\\/blog\\\/alveolar-co2-vs-end-tidal-measure-cp\\\/\"},\"author\":{\"name\":\"Artour Rakhimov\",\"@id\":\"https:\\\/\\\/www.normalbreathing.com\\\/blog\\\/#\\\/schema\\\/person\\\/5883fa849e73eabad1f4735855f77a9e\"},\"headline\":\"Alveolar CO2 vs. End-Tidal CO2 to Measure CP and Health\",\"datePublished\":\"2020-09-08T06:44:34+00:00\",\"dateModified\":\"2020-09-10T07:24:41+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.normalbreathing.com\\\/blog\\\/alveolar-co2-vs-end-tidal-measure-cp\\\/\"},\"wordCount\":485,\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.normalbreathing.com\\\/blog\\\/alveolar-co2-vs-end-tidal-measure-cp\\\/\",\"url\":\"https:\\\/\\\/www.normalbreathing.com\\\/blog\\\/alveolar-co2-vs-end-tidal-measure-cp\\\/\",\"name\":\"Alveolar CO2 vs. End-Tidal CO2 to Measure CP and Health - 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