Monday, April 7, 2008

Sleep Disorder Linked To Heart Failure Patient Deaths




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The study haunt 164 patients with heart failure in benefit of greater than seven years, and found that those with obstructive sleep apnea (OSA) have twin the destruction rate of those patients who do not enclose sleep apnea. Of the 37 patients with untreated OSA, the death rate be 24% in evaluation to 12% for the 113 patients devoid of sleep apnea.



Obstructive sleep apnea be rife in patients with heart failure, and contribute to increased blood discouragement, heart rate and other cardiac disturbances. The study, "Influence of Obstructive Sleep Apnea against Mortality in Patients With Heart Failure," will be published in the April 17, 2007 edition of the prestigious Journal of the American College of Cardiology. This is the most primitive prevalence that the effect of obstructive sleep apnea on mortality rates of heart failure patients have be studied and anecdote.



"The deep majority of heart failure patients across North America are not own assess for the diagnosis of sleep apnea and, by way of a conclusion, are not being treat for it. Our information says that tons of these patients stipulation to be treated for this disorder and that this will have a censorious impact on their subsistence," said Dr. Douglas Bradley, Head of the Sleep Research Laboratories at Toronto General Hospital, Toronto Rehabilitation Institute, and Mount Sinai Hospital, and Director of the University of Toronto Centre for Sleep Medicine and Circadian Biology.



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Obstructive sleep apnea occur when a character cessation breathing during sleep at lowest whatsoever 15 to 20 times an hour. These returning interruption in breathing divest the brainpower of oxygen and elicit the supportive easily upset rules, cause encouragement in blood pressure, heart rate and other disturbances. This, in spin, contributes to the inventiveness of heart failure and mortality.



However, as Dr. Bradley thorny out, most heart failure patients don't have the procedure symptom allied to OSA, which include: headache in the morning; ear-piercing snoring, edgy sleep, or daytime sleepiness. "Sleep study for heart failure patients are requisite in shaping whether they have obstructive sleep apnea. Since the conjecture of death for these patients is significant, we need to be more vigilant in pursue the diagnosis of obstructive sleep apnea in these patients," he said.



This research will weight how we delve into and carelessness patients with heart failure, said Dr. John Parker, Head of Cardiology at the Peter Munk Cardiac Centre, University Health Network and Mount Sinai Hospital, estimate that "treating sleep apnea in these patients has become as routine as implant pacemaker or using defibrillators." Patients for the study be conscript from the Heart Failure Clinic of the Mount Sinai Hospital and the sleep studies were perform in sleep laboratories at Toronto General Hospital and the Toronto Rehabilitation Institute. In lay down to explicitly discover the effect of sleep apnea, the characteristics of all the heart failure patients in the two group were roughly alike, plus age, masculinity, starkness of symptoms, medication, consignment, and diabetes.



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There were no death in the groups of 14 heart failure patients who had OSA and who were also treated with the CPAP device for at least three months. However, of the 37 patients with untreated sleep apnea, nine patients (24%) die. Patients in respectively body of relatives were as good as in symptom severity, heart failure therapy and other factor.



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About Toronto General Hospital, University Health Network: Toronto General Hospital is a partner in the University Health Network, along with the Toronto Western Hospital and the Princess Margaret Hospital. These rule hospital are affiliated with the University of Toronto. The breathing opportunity of research at Toronto General Hospital has made this institution a national and sophisticated fountainhead for cardiovascular finding, teaching and uncomplaining carefulness, as very as for its innovation in transplantation, cardiology, surgical innovation, effortlessly implant disease, diabetes and genomic prescription. In reunion, the Peter Munk Cardiac Centre at Toronto General Hospital address more cardiologists and cardiovascular surgeons than any hospital in Canada.



About Toronto Rehabilitation Institute: The Toronto Rehabilitation Institute (Toronto Rehab) is at the centre of one of the most significant and emerging frontiers in gel care today rehabilitation science. As a fully affiliated teaching and research hospital of the University of Toronto, Toronto Rehab is Canada's largest provider of fully fledged rehabilitation services, hard continuing care, and long-term care. Toronto Rehab is credit rehabilitation erudition and dry run through research, education and patient care. More reports is untaken at: University Health Network (UHN) Toronto, Ontario M5G 2M9 Canada/index.htm




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