Snoring And Apnoea Blog

The Dangers of High Blood Pressure and Sleep Apnoea

Posted on Thu, Mar 01, 2018

blood-pressure-monitor-1952924_960_720.jpgThe dangers of having high blood pressure and obstructive sleep apnoea (OSA)? Having both can be a deadly combination to your health that'll eventually lead to some very serious complications like stroke and even heart disease.

How do you know you’re at risk?

If you suffer from OSA, you might experience hypopnea, where the soft tissue in the back of your throat, your uvula, your tongue and your pharyngeal wall sags over time and block your airway. You might mistake it for snoring but it can fully block your airway and it’ll be harder to breathe every time you fell asleep.

When your muscles collapse due to hypertension, your blood oxygen can also drop below 90%. And you’ll be in big trouble for your natural blood oxygen or blood saturation should always be at around 96% or 97%. But here at Sleep Clinic Services, we've treated patients with the blood saturation levels of only 63%. They amazingly survived and their blood pressure improved dramatically.

Whenever your blood saturation drops, your heart has to work even harder to pump and circulate oxygen around your body. Your brain then sends a signal to your nervous system to wake you up and resume breathing to bring all your blood saturation levels back up. That brief awakening you experience is called a micro-arousal, it can happen multiple times at night and you won’t even be aware that it’s happening.

Study linking blood pressure and sleep apnoea626px-OSA_No_MAS.svg.png

A study conducted by The Journal of Clinical Endocrinology & Metabolism showed the real-time effects of sleep apnea on metabolism during the night, where it was also found out that untreated sleep apnoea raises blood pressure.

Jonathan Jun, M.D., assistant professor of medicine at the Johns Hopkins University School of Medicine and his colleagues drew blood samples 31 patients with moderate to severe OSA every 20 minutes for two nights. In random order, each and every one of them spent one night in the lab either with a CPAP or without a CPAP for two nights.

The study found that the CPAP withdrawal caused a recurrence of OSA along with an elevated heart rate, sleep disruption, and reduced blood oxygen. It has also increased the levels of free fatty acids, glucose, cortisol and blood pressure on a person during his/her sleep.

And this is why getting a treatment for snoring and sleep apnoea is so important for our health. It doesn’t only reduce the risk of having stroke and heart attack but it also prevents high blood pressure. But detecting sleep apnoea can be really difficult, especially if you’re by yourself. If you’re having a hard time sleeping you can take our free sleep self-assessment questionnaire and find out today if you’re suffering from sleep apnoea.  

Tags: sleep apnoea study, high blood pressure

Sleep Apnoea Studies

Posted on Mon, Sep 24, 2012

Sleep apnoea studies, more correctly referred to as polysomnograms or diagnostic sleep studies, are used to determine whether a patient is suffering from sleep apnoea.

There are two basic types of sleep apnoea.  'Central' sleep apnoea, which is comparatively rare, is as a result of a neurological condition which causes the sufferer to not experience the normal desire for breathing.  The body simply stops attempting to breathe.  Again, central sleep apnoea is a relatively rare condition and requires expert treatment by a sleep specialist.

Obstructive sleep apnoea (OSA) on the other hand is very common, with some studies finding densities of up to 50% of an adult population.  (The population being studied was made up of obese and pregnant women, so it's hardly surprising there would be a higher incidence of the condition amongst these patients.)  This form of sleep apnoea occurs when the soft tissue of the upper airway collapses and literally obstructs or blocks the airway.  The sleeping patient is trying to breathe, but the blockage in their airway prevents them from doing so.

Apart from the numerous and negative consequences of sleep apnoea (such as hypertension, stroke, type 2 diabetes, obesity, loss of libido and even cancer, all discussed in other articles on this blog) the biggest problem is most sleep apnoea patients are unaware of the fact they have the condition.

Repeated arousals during the night are a sign your body is waking you to get you breathing again.  Even these awakenings might not be noticed because they are only brief enough to restart the body breathing.  It is not uncommon to find severe sleep apnoea sufferers who wake literally hundreds of times per night, with consequent negative impacts on their physiology and sleep quality, who never realise they've woken through the night.

Sleep apnoea studies (i.e., polysomnogragms or diagnostic sleep studies) are used in cases like this.  The patient wears the diagnostic equipment to bed and it records eye movement, heart activity, brain activity, blood oxygen levels, sleep positions and movements and much more.  The recorded data gives sleep scientists and sleep physicians a clear picture of exactly what is happening while the patient sleeps.  An appropriate form of treatment can then be prescribed.

The really good news is new diagnostic technology means the sleep apnoea study can be done in the comfort, privacy and convenience of your own home -- so there's no more inconvenient appointment times and uncomfortable beds!

If you suspect you might have sleep apnoea, arrange a sleep apnoea study or call 1300 246 637 for a free, no-obligation chat with a friendly sleep therapist.  That's why we're here, so feel free to call.  Alternatively, you can make an online enquiry by clicking on the button below.

Either way, do something.  Sleep apnoea is a dangerous condition which typically worsens and does more damage over time.  Get started on arranging your sleep apnoea study today.


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Tags: sleep apnea studies, sleep apnoea studies, sleep apnoea study, sleep apnea study