{"id":35845,"date":"2026-04-08T13:38:00","date_gmt":"2026-04-08T13:38:00","guid":{"rendered":"https:\/\/www.tun.com\/home\/?p=35845"},"modified":"2026-04-08T16:12:50","modified_gmt":"2026-04-08T16:12:50","slug":"night-to-night-sleep-apnea-swings-tied-to-hidden-heart-risks","status":"publish","type":"post","link":"https:\/\/www.tun.com\/home\/night-to-night-sleep-apnea-swings-tied-to-hidden-heart-risks\/","title":{"rendered":"Night-to-Night Sleep Apnea Swings Tied to Hidden Heart Risks"},"content":{"rendered":"\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-uagb-blockquote uagb-block-e7eb3fc3 uagb-blockquote__skin-border uagb-blockquote__stack-img-none\"><blockquote class=\"uagb-blockquote\"><div class=\"uagb-blockquote__content\">New research from Flinders University suggests that how much your sleep apnea varies from night to night may matter as much as how severe it is. Multi-night home monitoring could help uncover hidden heart risks that one-night sleep tests miss.<\/div><footer><div class=\"uagb-blockquote__author-wrap uagb-blockquote__author-at-left\"><\/div><\/footer><\/blockquote><\/div>\n\n\n\n<div class=\"wp-block-group is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-0dfbf163 wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"has-text-align-left wp-block-post-author\"><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\">The University Network<\/p><\/div><\/div>\n\n\n<div class=\"wp-block-uagb-social-share uagb-social-share__outer-wrap uagb-social-share__layout-horizontal uagb-block-ee584a31\">\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-ec619ce7\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/www.facebook.com\/sharer.php?u=\" tabindex=\"0\" role=\"button\" aria-label=\"facebook\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256c0 123.8 90.69 226.4 209.3 245V327.7h-63V256h63v-54.64c0-62.15 37-96.48 93.67-96.48 27.14 0 55.52 4.84 55.52 4.84v61h-31.28c-30.8 0-40.41 19.12-40.41 38.73V256h68.78l-11 71.69h-57.78V501C413.3 482.4 504 379.8 504 256z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-32d99934\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/twitter.com\/share?url=\" tabindex=\"0\" role=\"button\" aria-label=\"twitter\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\"><path d=\"M389.2 48h70.6L305.6 224.2 487 464H345L233.7 318.6 106.5 464H35.8L200.7 275.5 26.8 48H172.4L272.9 180.9 389.2 48zM364.4 421.8h39.1L151.1 88h-42L364.4 421.8z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-1d136f14\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/www.linkedin.com\/shareArticle?url=\" tabindex=\"0\" role=\"button\" aria-label=\"linkedin\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path d=\"M416 32H31.9C14.3 32 0 46.5 0 64.3v383.4C0 465.5 14.3 480 31.9 480H416c17.6 0 32-14.5 32-32.3V64.3c0-17.8-14.4-32.3-32-32.3zM135.4 416H69V202.2h66.5V416zm-33.2-243c-21.3 0-38.5-17.3-38.5-38.5S80.9 96 102.2 96c21.2 0 38.5 17.3 38.5 38.5 0 21.3-17.2 38.5-38.5 38.5zm282.1 243h-66.4V312c0-24.8-.5-56.7-34.5-56.7-34.6 0-39.9 27-39.9 54.9V416h-66.4V202.2h63.7v29.2h.9c8.9-16.8 30.6-34.5 62.9-34.5 67.2 0 79.7 44.3 79.7 101.9V416z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p>People whose sleep apnea swings dramatically from one night to the next may face a significantly higher risk of heart attack, stroke or heart failure, according to new research from Flinders University.<\/p>\n\n\n\n<p>The findings suggest that doctors may be missing a hidden group of patients at risk because most sleep apnea tests capture only a single night of data.<\/p>\n\n\n\n<p>In one study, <a href=\"https:\/\/academic.oup.com\/sleep\/advance-article\/doi\/10.1093\/sleep\/zsag084\/8541706\" title=\"\">published<\/a> in the journal <em>Sleep<\/em>, researchers analyzed sleep data from more than 3,000 adults who tracked their breathing at home using an under-mattress sensor. The participants\u2019 sleep patterns were recorded over several months and then compared with reports of heart and stroke conditions.<\/p>\n\n\n\n<p>The team focused not just on how severe people\u2019s obstructive sleep apnea was on average, but on how much it fluctuated from night to night. Obstructive sleep apnea causes repeated pauses in breathing during sleep and is often linked with loud snoring, restless nights and daytime fatigue. It is also closely associated with cardiovascular disease.<\/p>\n\n\n\n<p>Lead author Bastien Lechat, a sleep expert at Flinders Health and Medical Research Institute (FHMRI) Flagship Sleep Health Program, found that people whose sleep apnea severity varied widely between nights were about one-third more likely to have experienced a heart attack, stroke or heart failure, even after accounting for their average level of sleep apnea.<\/p>\n\n\n\n<p>Lechat noted many people and clinicians may be underestimating how much sleep apnea can change.<\/p>\n\n\n\n<p>\u201cMany people assume sleep apnoea is stable, but the reality is very different, and some nights can be much worse than others, and this repeated up and down strain may place extra stress on the heart,\u201d he said in a news release.<\/p>\n\n\n\n<p>That variability matters for diagnosis, he explained.<\/p>\n\n\n\n<p>\u201cA single night sleep test may falsely reassure some patients, because people with mild average sleep apnoea can still be at higher risk if their breathing problems swing dramatically between nights,\u201d he said.<\/p>\n\n\n\n<p>Senior author Danny Eckert, the director of FHMRI Sleep Health and a Matthew Flinders Professor at Flinders University, said the results help explain why heart risk can be hard to predict in people with sleep apnea.<\/p>\n\n\n\n<p>Eckert noted that the body may not cope well with constantly changing oxygen levels and broken sleep.<\/p>\n\n\n\n<p>\u201cThe body may struggle to adapt to repeated changes in oxygen levels and sleep disruption. These night\u2011to\u2011night swings can quietly stress the heart and blood vessels over time without being picked up by standard testing,\u201d he said in the news release.<\/p>\n\n\n\n<p>A second large study led by Flinders researchers, <a href=\"https:\/\/www.nature.com\/articles\/s41746-026-02469-w\" target=\"_blank\" rel=\"noopener\" title=\"\">published<\/a> in <em>npj Digital Medicine<\/em>, reinforces the message that night-to-night patterns matter.<\/p>\n\n\n\n<p>In that international project, nearly 30,000 people were tracked over several years using home-based digital health devices. The researchers looked at sleep-disordered breathing, including sleep apnea and habitual snoring, and signs of vascular aging \u2014 changes in blood vessels that can signal early cardiovascular disease.<\/p>\n\n\n\n<p>The study, led by Lucia Pinilla, a research fellow at FHMRI Sleep Health, found that more severe sleep apnea, high night-to-night variability and even regular snoring were all linked with faster aging of the blood vessels. Importantly, people with mild sleep apnea but high nightly variability had blood vessel health similar to those with severe sleep apnea, pointing to a group whose risk might be overlooked in standard testing.<\/p>\n\n\n\n<p>Pinilla said the two studies together show why repeated sleep monitoring is crucial.<\/p>\n\n\n\n<p>\u201cThese findings show that one night tests can miss people at real risk,\u201d she said in the news release. \u201cSleep should be seen as a moving picture rather than a single photograph, and understanding nightly patterns can help doctors better identify who needs early intervention.\u201d<\/p>\n\n\n\n<p>Heart disease remains the leading cause of death worldwide, but many of its risk factors \u2014 including high blood pressure, smoking, obesity and untreated sleep disorders \u2014 can be addressed. The Flinders team argues that better sleep assessment could become an important tool for spotting cardiovascular risk earlier and tailoring treatment.<\/p>\n\n\n\n<p>The research also highlights how home-based health technology is changing the way sleep and heart health can be monitored. Under-mattress sensors and other digital devices allow scientists and clinicians to collect data over weeks or months in people\u2019s everyday environments, rather than relying solely on a single night in a sleep lab.<\/p>\n\n\n\n<p>Eckert said this approach mirrors how other chronic conditions are already managed.<\/p>\n\n\n\n<p>\u201cBlood pressure and blood sugar are measured repeatedly over time, and sleep health should be treated the same way,\u201d he said.<\/p>\n\n\n\n<p>For patients, the message is not to panic, but to pay attention. Loud snoring, gasping during sleep, morning headaches and feeling unrefreshed despite a full night in bed can all be signs of sleep apnea. Because the condition often goes undiagnosed, many people may not realize that their sleep could be putting extra strain on their heart and blood vessels.<\/p>\n\n\n\n<p>The researchers stress that their studies are observational, meaning they show strong associations but do not prove that variable sleep apnea directly causes heart disease. Other factors, such as weight, lifestyle or existing health conditions, may also play a role.<\/p>\n\n\n\n<p>Even so, the consistent links between night-to-night variability, blood vessel aging and cardiovascular problems point to the need for longer-term studies and a rethink of how sleep apnea is assessed in clinics.<\/p>\n\n\n\n<p>If future research confirms that swings in sleep apnea severity actively damage the heart and blood vessels, multi-night home monitoring could become a standard part of care. That might help doctors identify high-risk patients earlier, adjust treatments such as continuous positive airway pressure (CPAP) more precisely, and track whether interventions are working over time.<\/p>\n\n\n\n<p>For now, the researchers encourage anyone who snores heavily, wakes up choking or gasping, or feels persistently tired despite going to bed on time to talk with a health professional.<\/p>\n\n\n\n<p>\u201cIf you snore or feel unrefreshed after sleep, speaking with a health professional could help uncover hidden risks to your heart and there are many options available for treatment,\u201d Lechat said.<\/p>\n\n\n\n<div style=\"height:11px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Source:<\/strong> <a href=\"https:\/\/news.flinders.edu.au\/blog\/2026\/04\/08\/sleep-patterns-may-reveal-hidden-heart-risks\/\" target=\"_blank\" rel=\"noopener\" title=\"\">Flinders University<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>New research from Flinders University suggests that how much your sleep apnea varies from night to night may matter as much as how severe it is. Multi-night home monitoring could help uncover hidden heart risks that one-night sleep tests miss.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"single-no-separators","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[12],"tags":[160],"class_list":["post-35845","post","type-post","status-publish","format-standard","hentry","category-health","tag-flinders-university"],"acf":[],"aioseo_notices":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"The University Network","author_link":"https:\/\/www.tun.com\/home\/author\/funky_junkie\/"},"uagb_comment_info":0,"uagb_excerpt":"New research from Flinders University suggests that how much your sleep apnea varies from night to night may matter as much as how severe it is. Multi-night home monitoring could help uncover hidden heart risks that one-night sleep tests miss.","_links":{"self":[{"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/posts\/35845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/comments?post=35845"}],"version-history":[{"count":11,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/posts\/35845\/revisions"}],"predecessor-version":[{"id":35856,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/posts\/35845\/revisions\/35856"}],"wp:attachment":[{"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/media?parent=35845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/categories?post=35845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tun.com\/home\/wp-json\/wp\/v2\/tags?post=35845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}