{"id":1122,"date":"2024-06-20T19:44:55","date_gmt":"2024-06-20T17:44:55","guid":{"rendered":"https:\/\/kineaphp.fr\/?p=1122"},"modified":"2024-07-08T12:26:19","modified_gmt":"2024-07-08T10:26:19","slug":"7-couleur-de-loxygene","status":"publish","type":"post","link":"https:\/\/kineaphp.fr\/?p=1122","title":{"rendered":"7. Couleur de l&rsquo;oxyg\u00e8ne"},"content":{"rendered":"\n<p><strong>La couleur de la peau peut changer<\/strong><br>&#8211; Elle peut devenir bleu\/violac\u00e9e quand la saturation en O2 (Sa<sub>O2<\/sub>) est basse. On parle alors de cyanose.<br>&#8211; Elle peut devenir de couleur blanche quand le contenu art\u00e9riel en O2 (Ca<sub>O2<\/sub>) est bas car taux d\u2019Hb bas. On parle alors d&rsquo;an\u00e9mie.<br><br>Cela s&rsquo;explique par la variation de ces 3 valeurs :<br>Ca<sub>O2<\/sub>&nbsp;: exprime la quantit\u00e9 d\u2019O2 dans le corps.<br>Sa<sub>O2<\/sub>&nbsp;: pourcentage de saturation en O2 de l\u2019Hb.<br>Pa<sub>O2<\/sub>&nbsp;: pression qu\u2019exerce l\u2019O2 dans le sang.<br><br>Rappel sur les valeurs normales<br>Ca<sub>O2<\/sub>&nbsp;: 210mm\/L<br>Sa<sub>O2<\/sub>&nbsp;: 98%<br>Pa<sub>O2<\/sub>&nbsp;: 100mmHg<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<p><strong>La courbe de dissociation de l\u2019Hb<\/strong><br>Elle fait le lien entre ces 3 valeurs.<img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"464\" class=\"wp-image-1123\" style=\"width: 400px;\" src=\"https:\/\/kineaphp.fr\/wp-content\/uploads\/2024\/06\/Courbe-de-dissociation.jpg\" alt=\"\" srcset=\"https:\/\/kineaphp.fr\/wp-content\/uploads\/2024\/06\/Courbe-de-dissociation.jpg 398w, https:\/\/kineaphp.fr\/wp-content\/uploads\/2024\/06\/Courbe-de-dissociation-258x300.jpg 258w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><br><\/p>\n<\/div>\n<\/div>\n\n\n\n<p>Cette courbe permet d\u2019observer une carence d\u2019O2 dans le sang&nbsp;: l\u2019hypox\u00e9mie.<\/p>\n\n\n\n<p><strong>Cas clinique<\/strong><br>Cas 1&nbsp;: SaO2=80%, PaO2=50mmHg, Hb=15g\/dl (cyanos\u00e9)<br>Cas 2&nbsp;: SaO2=97%, PaO2=90mmHg, Hb=7g\/dl (p\u00e2le)<br>Lequel est le plus hypox\u00e9mique (quantit\u00e9 d\u2019O2 dans le sang la plus basse)&nbsp;?<\/p>\n\n\n\n<p>Il faut calculer la formule du CaO2 (quantit\u00e9 d\u2019O2 dans le sang)<br>(Hb x SaO2 x 13,9) + (PaO2x0,003)<br>Cas 1 : 15 x O,80 x 13,9 + 50 x 0,003 = 166<br>Cas 2 : 7 x 0,97 X 13,9 + 90 x 0,003 = 94<br><br>Le cas 2 est le plus hypox\u00e9mique. C\u2019est normal car le transporteur dans le sang est principalement l\u2019Hb.<\/p>\n\n\n\n<p><em>Cet article est un r\u00e9capitulatif de la vid\u00e9o \u00ab\u00a0Les couleurs de l&rsquo;oxyg\u00e8ne\u00a0\u00bb de l&rsquo;Universit\u00e9 catholique de Louvain.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"7. Les couleurs de l&#039;oxyg\u00e8ne\" width=\"925\" height=\"520\" src=\"https:\/\/www.youtube.com\/embed\/oiLQufIVOKg?start=5&#038;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>La couleur de la peau peut changer&#8211; Elle peut devenir bleu\/violac\u00e9e quand la saturation en O2 (SaO2) est basse. On parle alors de cyanose.&#8211; Elle peut devenir de couleur blanche quand le contenu art\u00e9riel en&hellip;<\/p>\n<p class=\"more-link-wrapper\"><a href=\"https:\/\/kineaphp.fr\/?p=1122\" class=\"more-link\">Continue Reading<span class=\"screen-reader-text\"> \u00ab\u00a07. Couleur de l&rsquo;oxyg\u00e8ne\u00a0\u00bb<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[150],"tags":[],"class_list":["post-1122","post","type-post","status-publish","format-standard","hentry","category-champ-respi-comprendre-la-respiration"],"_links":{"self":[{"href":"https:\/\/kineaphp.fr\/index.php?rest_route=\/wp\/v2\/posts\/1122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kineaphp.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kineaphp.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kineaphp.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kineaphp.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1122"}],"version-history":[{"count":3,"href":"https:\/\/kineaphp.fr\/index.php?rest_route=\/wp\/v2\/posts\/1122\/revisions"}],"predecessor-version":[{"id":1218,"href":"https:\/\/kineaphp.fr\/index.php?rest_route=\/wp\/v2\/posts\/1122\/revisions\/1218"}],"wp:attachment":[{"href":"https:\/\/kineaphp.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kineaphp.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kineaphp.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}