Heart / Stroke-RelatedCoronary-Artery Disease Heart / Stroke-RelatedHeart Attack Heart / Stroke-RelatedStroke Heart / Stroke-RelatedSleep ProblemsApnea Sleep ProblemsAngioplastyCoronary-Artery DiseaseHeart AttackCardiovascular DiseasesStrokeSleep DisorderApnea
Updated on September 22, 2022
HealthDay operates under the strictest editorial standards. Our syndicated news content is completely independent of any financial interests, is based solely on industry-respected sources and the latest scientific research, and is carefully fact-checked by a team of industry experts to ensure accuracy.
- All articles are edited and checked for factual accuracy by our Editorial Team prior to being published.
- Unless otherwise noted, all articles focusing on new research are based on studies published in peer-reviewed journals or issued from independent and respected medical associations, academic groups and governmental organizations.
- Each article includes a link or reference to the original source.
- Any known potential conflicts of interest associated with a study or source are made clear to the reader.
Please see our Editorial and Fact-Checking Policy for more detail.Editorial and Fact-Checking Policy
HealthDay Editorial Commitment
HeathDay is committed to maintaining the highest possible levels of impartial editorial standards in the content that we present on our website. All of our articles are chosen independent of any financial interests. Editors and writers make all efforts to clarify any financial ties behind the studies on which we report.
MONDAY, May 16, 2016 (HealthDay News) -- Scientists say they now have more evidence that sleep apnea might worsen heart disease.
Sleep apnea leads to interrupted breathing during sleep. In their study, the researchers found that patients with the condition who had a form of the heart procedure called angioplasty were much more likely to suffer heart attacks or strokes after their procedure.
The big difference held up even when the researchers adjusted their findings so they wouldn't be thrown off by factors like obesity and high blood pressure, which are common in these patients.
While the study did not prove sleep apnea caused heart disease to worsen, the authors think the first one probably exacerbates the second one.
"For cardiologists inserting stents for coronary artery disease, it is important to screen the patients for obstructive sleep apnea," said study author Dr. Lee Chi-Hang.
"And patients who have been diagnosed with sleep apnea should know about the strong relationship between sleep apnea and heart disease," added Chi-Hang, a senior consultant in the department of cardiology at the National University of Singapore Heart Center.
For the study, the researchers tracked just over 1,300 patients from Brazil, China, India, Myanmar and Singapore who had undergone angioplasty with stents. In these procedures, surgeons thread catheters through vessels and clear blockages by implanting stents designed to keep arteries open.
Almost 60 percent of the patients were overweight or obese, and 45 percent were diagnosed with sleep apnea.
The researchers followed the patients for a median of two years. Of the patients, 141 (11 percent) suffered a stroke, heart attack or needed another procedure. Out of those patients, 24 died.
But, these problems only occurred in 8 percent of patients without sleep apnea.
Chi-Hang said sleep apnea appears to be the culprit, especially in light of the "ample data" in studies over the past two decades that has linked it to heart disease.
Sleep apnea appears to contribute to cardiac illness by robbing people of oxygen, Chi-Hang said, a process that can lead to surges in blood pressure and inflammation. These, in turn, can harm the lining of blood vessels, thicken blood and make the heart struggle, he explained.
Chi-Hang said doctors should screen angioplasty-with-stent patients for sleep apnea. Patients with the sleep condition who have daytime sleepiness should get treatment via CPAP (continuous positive airway pressure) breathing machines, he said.
However, only 1 percent of those diagnosed with sleep apnea were being treated via CPAP by the end of the study, as many patients won't accept treatment with the breathing machines, he added.
Moving forward, the National University Heart Center Singapore is planning a study to provide insight into whether certain heart patients should undergo testing for sleep apnea, Chi-Hang said.
Dr. Sanja Jelic, an associate professor of medicine at Columbia University Medical Center in New York City, said "the mystery remains whether treatment of sleep apnea reduces cardiovascular risk."
The research has been limited because only about 30 percent to 40 percent of patients who try the breathing devices keep using them after a year, she explained.
Jelic said it may be possible to better understand the connection with a controlled clinical trial. But, it would be dangerous to assign some sleep apnea patients with daytime sleepiness to not undergo treatment just to compare them to those who do get treatment.
Meanwhile, Jelic said, "every patient with cardiovascular disease should be screened for sleep apnea by answering questions during the doctor's visit."
The findings were to be presented Monday at the American Thoracic Society annual meeting in San Francisco. Studies released at conferences should be considered preliminary until they are published in medical journals after peer review.
For more about sleep apnea and cardiac disease, try the American Heart Association.
This story may be outdated. We suggest some alternatives.
The content contained in this article is over two years old. As such our recommendation is that you reference the articles below for the latest updates on this topic. This article has been left on our site as a matter of historic record. Please contact us at firstname.lastname@example.org with any questions.
Read this Next
Other Trending Articles