HOME >> MEDICINE >> NEWS
Fluid displacement from legs to neck can lead to obstructive sleep apnea

When a person lies down, a small amount of fluid displaced from the legs to the base of the neck can narrow soft tissue around the throat and increase airflow resistance in the pharynx by more than 100 percent, predisposing the person to obstructive sleep apnea.

The results appear in the second issue for December 2006 of the American Journal of Respiratory and Critical Care Medicine, published by the American Thoracic Society.

T. Douglas Bradley, M.D., of the Toronto General Hospital, and eight associates measured leg fluid volume, neck circumference and airflow resistance in the throats (pharynx) of 11 healthy, non-obese subjects while they lay on their backs. Next, the researchers applied a lower body positive pressure device (anti-shock trousers) for five minutes to displace fluid from the legs to the neck area.

In obstructive sleep apnea, a blockage in the throat or upper airway causes victims to repeatedly stop breathing long enough to decrease the amount of oxygen in the blood and increase the carbon dioxide. The National Heart, Lung, and Blood Institute estimates that 18 million Americans suffer from sleep apnea.

"Obesity and neck circumference are important risk factors in obstructive sleep apnea, but together only account for approximately one-third of the variability in the apnea-hyponea index," said Dr. Bradley. "A factor not ordinarily considered is fluid accumulation at the nape of the neck and around pharyngeal soft tissue. Obstructive sleep apnea is very common in fluid-retaining states such as heart failure, renal failure and peripheral edema of unknown cause."

"Our data show that displacement of a small amount of fluid such as 340 ml, about 12 ounces, from the legs is sufficient to cause a 102 percent increase in airflow resistance of the pharynx in healthy, non-obese subjects," continued Dr. Bradley

According to the authors, when the pharynx narrows in obstructive sleep apnea and in hea
'"/>

Contact: Suzy Martin
smartin@thoracic.org
212-315-8631
American Thoracic Society
15-Dec-2006


Page: 1 2

Related medicine news :

1. Combined treatment cuts inflammatory cells in chronic obstructive pulmonary disease
2. Grandparents, older adults encouraged to seek help for a sleep disorder
3. Late weekend sleep among teens may lead to poor academic performance
4. Poor sleep hygiene in children associated with behavioral problems
5. Students with medical-related majors more likely to have poor quality sleep
6. College students who pull all-nighters and get no sleep more likely to have a lower GPA
7. Childrens brain responses predict impact of sleep loss on attention
8. Catastrophic events can affect a persons sleep
9. Night shift nurses more likely to have poor sleep habits
10. Children with sleep disorder symptoms are more likely to have trouble academically
11. Sleep Slide-Rule improves childrens understanding of the importance of sleep

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/11/2020)... ... February 11, 2020 , ... This week marks the launch ... to Butchery, Mindful Meat Eating for the Modern Omnivore . Authored by nationally-recognized ... new version brings discussions of responsible meat production, consumption, and economics into the ...
(Date:2/10/2020)... ... February 10, 2020 , ... C. A. Shively officially formed The Association of ... was still in the music business as a majority label stakeholder in Hustle N ... for HNF, and HNF to create any music compositions needed for AYBOS. No one ...
(Date:2/10/2020)... ... February 10, 2020 , ... ... a medical device company dedicated to assisting healthcare professionals (HCPs) to improve ... the launch of the Solesta® Reimbursement Assistance Program. , Solesta is ...
(Date:2/10/2020)... ... ... Real Food Blends , makers of 100% real food meals for ... the medical community, is proud to announce the recipient of its 2nd Annual Brian ... during Feeding Tube Awareness Week . Feeding Tube Awareness Week is a worldwide ...
(Date:2/8/2020)... Ariz. (PRWEB) , ... February 08, 2020 , ... Lerner ... Heart and Stroke Ball benefiting the American Heart Association. On February 15, 2020 guests ... Paloma Resort is transformed into “1001 Persian Nights.” A cocktail reception kicks off the ...
Breaking Medicine News(10 mins):
(Date:2/10/2020)... ... February 10, 2020 , ... ... MS, RDN, has been selected as the chief of Nutrition and Food Service ... food service operations and clinical nutrition programs for the health care system’s three ...
(Date:2/10/2020)... ... February 10, 2020 , ... St. Louis-based firm Alpine Security ... securing healthcare is by working with medical device manufacturers to help ensure their ... drug infusion pumps or patient monitoring systems to implantable (internal) devices, like pacemakers. ...
(Date:2/7/2020)... ... February 07, 2020 , ... MD&M, the ... Center. PI, a global leader in precision automation and piezo transducer technologies will ... selection of piezo transducers for medical applications. , Product Examples, A variety ...
Breaking Medicine Technology:
Cached News: