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Old 08-12-2008, 07:00 AM
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Default Sleep Apnea Linked to Heart Attacks

A study links night-time heart attacks with the breathing disorder sleep apnea, which makes people gasp for breath every few minutes.

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TUESDAY, July 22 (HealthDay News)
The link is not fully established, but it seems logical, said Dr. Virend Somers, a cardiologist from the Mayo Clinic who is lead author of the report in the July 29 issue of the Journal of the American College of Cardiology.

Most heart attacks occur in the day, generally between 6 a.m. and noon, Somers said. Having one during the night, when the heart should be most at rest, means that something unusual happened, he said. Somers and his colleagues have been working for a decade to show that sleep apnea is to blame.

Their studies have looked at the most common form, obstructive sleep apnea, in which the tube carrying air to the lungs, collapses periodically, blocking the flow. "About 10 years ago, we showed that obstructive sleep apnea has a powerful effect on the sympathetic nervous system, causing an acute increase in adrenaline flow, high blood pressure and lack of oxygen," Somers said.

That study was followed by another showing that sudden death at night is more common for people with sleep apnea. An obvious cause of sudden death is a heart attack, so in this latest study, Somers and his colleagues studied the breathing patterns of 92 people admitted to the hospital after heart attacks.

"For those who had heart attacks at night, the vast majority had undiagnosed sleep apnea," Somers said. "So, perhaps sleep apnea is acting as a trigger for night-time heart attacks."
The "perhaps" is there because it is an observational study, not the kind of carefully controlled study that is the gold standard of medical research. Prospects for such a study, in which people with and without sleep apnea would be followed for months or years to determine their risk of night-time heart attacks, are dim, Somers acknowledged.

Several studies have shown a link between sleep apnea and cardiac problems, said Dr. Allan Pack, director of the sleep center at the University of Pennsylvania. The largest, done several years ago, followed thousands of individuals. "It showed that people with sleep apnea who refused treatment had a three- to fourfold increased risk of cardiac events," Pack said.

What the new study adds is "a relative difference in the timing of cardiac events," he said. In clinical practice, if someone has a heart attack in the night, "you would strongly suspect sleep apnea," Pack said.
If tests detect sleep apnea, there is an effective treatment available that can reduce the risk of future cardiac events, he said. Continuous positive air pressure (CPAP) keeps airways open continuously by pushing air into the lungs through a face mask.


"It might be cumbersome, but it is effective," Pack said.
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Old 08-12-2008, 09:40 AM
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I just wanted to share a personal experience.

A while back, I was diagnosed with mild sleep apnea. I didn't do a sleep-study but I had an oxygen-saturation test (I think that's what it's called). That, along with my loud snoring, lead to my diagnosis.

The solution, in my case, was to lose weight. That's what my doctor (who's basicially an allopath) recommended. As long as the weight stays off, the snoring pretty much stays away too.

This is unlikely to be the solution for everyone. But, losing excess weight is a healthy thing anyway. So, it may be worth a shot.
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Old 09-16-2008, 04:08 PM
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Hmmm apparently I sometimes stop breathing in my sleep, and suddenly resume with a sort of gasp. I'm dead on average weight for my height though, exercise regularly, eat well, and have very low body fat ratio, so I wonder if thats actually sleep apnea or what.
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Old 09-17-2008, 11:29 AM
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Sleep apnea can also be caused just from aging.

As we age the tone of the musculature in the throat and supporting musculature changes causing the collapse of the airway during rest.

The only thing I can think of to prevent and possibly cure is the yogic posture called the lion.


http://www.altmd.com/blogs/yoga-post...cial-elasticit
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Old 09-18-2008, 03:54 PM
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The odd thing about it is that I've apparently been doing it since about the age of 20, I'm 30 now, and always been about average weight. I do exercise more these days though, so maybe thats helping.
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Old 09-21-2008, 12:41 PM
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Doug Kaufmann at www.knowthecause.com says that sleep apnea is caused from fungus!

Sally B.
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Old 09-21-2008, 09:15 PM
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Fungus! Fingers crossed its not fungii related for me
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Old 01-20-2009, 07:25 AM
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Antioxidant vitamin C improves endothelial functio...[Am J Respir Crit Care Med. 2006] - PubMed Result
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Antioxidant vitamin C improves endothelial function in obstructive sleep apnea.

Grebe M, Eisele HJ, Weissmann N, Schaefer C, Tillmanns H, Seeger W, Schulz R.

Division of Cardiology and Angiology, Department of Internal Medicine, Justus-Liebig University, Giessen, Germany. mathias.grebe@innere.med.uni-giessen.de

RATIONALE: Obstructive sleep apnea (OSA) is associated with oxidative stress, endothelial dysfunction, and increased cardiovascular morbidity and mortality. OBJECTIVE: We tested the hypothesis that endothelial dysfunction in patients with OSA is linked to oxidative stress. METHODS: In the present study, we measured flow-mediated dilation (FMD) of the brachial artery by ultrasound in 10 otherwise healthy, untreated patients with OSA and 10 age-and sex-matched control subjects without sleep-disordered breathing before and after intravenous injection of the antioxidant vitamin C. The investigator performing the FMD measurements was blinded to the status of the patients. RESULTS: When compared with control subjects, baseline FMD was significantly reduced in the patients with OSA. After intravenous injection of 0.5 g vitamin C, vasoreactivity remained unchanged in the control subjects. In the patients with OSA, ascorbate led to an increase in FMD to a level comparable to that observed in the control group. CONCLUSION: The reduced endothelial-dependent vasodilation in untreated patients with OSA acutely improves by the free radical scavenger vitamin C. These results are in favor of oxidative stress being responsible for the endothelial dysfunction in OSA. Antioxidant strategies should be explored for the treatment of OSA-related cardiovascular disease.
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