CHEST 2006 ABSTRACT BRIEFS
EMBARGO: Each Abstract is Embargoed Until the Day/Time Listed Below Title
Sleep Medicine Sleep Apnea and Diabetes May Be Related
(Tuesday, October 24, 2006, 2:30 PM EST)
According to new research, obstructive sleep apnea syndrome (OSAS) and diabetes mellitus (DM) may be associated. Using the electronic charts of patients referred for sleep studies over one year, researchers from Quillen College of Medicine in Tennessee identified 127 patients with DM. Data collected included age, gender, and body mass index, as well as the presence of the kidney condition microalbuminuria; microvascular complications, such as retinopathy/neuropathy; or macrovascular complications, such as coronary artery disease and stroke. Overall, OSAS was directly related to microalbuminuria, microvascular, and macrovascular complications. Researchers concluded that, despite being independent diseases, OSAS might directly contribute to DM complications.
CPAP Treatment in Commercial Drivers Reduces Employer Health Costs
(Wednesday, October 25, 2006, 12:30 PM EST)
A new study shows significant savings in health-care expenditures for commercial carriers when their truck drivers’ sleep apnea is treated. Between January 2003 and December 2005, researchers from Texas, Wisconsin, and Minnesota analyzed 339 commercial truck drivers with newly diagnosed sleep apnea. All drivers received a continuous positive airway pressure (CPAP) machine for treatment. Data were collected before and after CPAP intervention and included rates of hospital admission, emergency department, office visits, and total health-care spending. Researchers found that after CPAP intervention, there was an average savings of $538, per member per month, or a 57.4 percent reduction in per-member-per-month total health-care costs. In addition, inpatient hospital admissions showed a reduction of 91 percent after CPAP was used. Researchers conclude that companies can enjoy large reductions in corporate health-care by attempting to identify and treat employees with sleep apnea.
Sleep Apnea and Snoring Disorder Differ in Children
(Wednesday, October 25, 2006, 12:30 PM EST)
A new study shows that the differences between obstructive sleep apnea (OSA) and primary snoring disorder (PSD) in children are significant. Researchers from the University of Texas Health Science Center reviewed patient charts of 309 children, ages 6 to 17, who underwent consecutive polysomnograms. Measurements, such as daily caffeine intake, height, weight, blood pressure, and neck circumference were gathered from prior examinations. Researchers defined OSA as an obstructive apnea-hyponea index greater than one. In all, 106 patients had OSA, 113 had PSD, and 90 had normal results. Body mass index and neck circumference were among the most statistically different between patients with OSA and patients with PSD.
Men With Apnea May Be Sleepier Than Women
(Wednesday, October 25, 2006, 2:30 PM EST)
Men with mild obstructive sleep apnea may have more sleep fragmentation and daytime symptoms than their female counterparts, according to a new study from Marshall University. Researchers assessed the differences in clinical presentation and polysomnographic profile between 31 men and 32 women with mild obstructive sleep apnea. In all, 12 parameters were examined, in which 3 of them showed a significant difference between the sexes. Men had more witnessed apnea, spent more time in stage 1 sleep, and less time in stage 2 sleep, than women. As a result, researchers suggest that physicians may consider a lower continuous positive airway pressure therapy threshold for men.
African-Americans Report Less Sleep Than Caucasians
(Wednesday, October 25, 2006, 2:30 PM EST)
A new prospective study of morbidly obese patients revealed that African-Americans self-reported less average sleep duration compared with Caucasians. Researchers from Metrohealth Medical Center in Ohio analyzed 251 patients undergoing polysomnography. Sleep questionnaires were administered and self-reported sleep duration was reported. Demographic information, such as age, gender, race, and comorbid conditions were also included. While researchers did not find a relationship between body mass index (BMI) and sleep duration, they did find that despite age, BMI, or caffeine or alcohol intake, African-Americans reported less sleep duration.
Obstructive Sleep Apnea May Increase Complications After Heart Surgery
(Wednesday, October 25, 2006, 2:30 PM EST)
New research from the Cleveland Clinic Foundation suggests that cardiac surgery patients with obstructive sleep apnea (OSA) are at a higher risk for developing postoperative complications. Researchers compared the incidence of cardiac surgery complications in 37 patients with OSA, identified through the cardiac surgery database, with another database sample absent of OSA. Patients, who underwent open-heart surgery within two years of an OSA diagnosis, were assumed to have had OSA at the time of surgery. Researchers found that the patients with OSA exhibited a higher incidence of encephalopathy, postoperative infection, and increased length of intensive care unit stays. It is suggested that this risk is underestimated due to lack of OSA incidence awareness and that patients may need to be screened for OSA prior to cardiac surgery.
Education Increases Compliance in CPAP Patients
(Tuesday, October 24, 2006, 2:30 PM EST)
Patient education and mask acclimatization are shown to increase compliance among people who participate in continuous positive airway pressure (CPAP) therapy, says a new study. Researchers from Yale University and Bridgeport Hospital divided 88 CPAP patients into two groups; those who received education and acclimatization prestudy (intervention group) and those who received traditional education only, or poststudy (control group). All patients received humidification and followed-up at one, three, and six months. Compliance data downloaded from the CPAP machine showed only eight percent of patients failed to use CPAP, compared with 31 percent of controls. Researchers concluded that there was more compliance, both in hours per night and nights per week used, in the intervention group.
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