Acid reflux and sleep disorders: Both can be hidden

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acid reflux heartburn GERD sleep apneaWhat is acid reflux?

Acid reflux, more commonly referred to as heartburn, occurs when stomach contents repeatedly flow backward into the esophagus. This can happen at any time of day.

A muscle known as the lower esophageal sphincter (LES) attaches at the lower end of the esophagus where it drains into the stomach.

The chief role of the LES is to provide a one-way valve between the throat and the stomach; it opens up as you swallow food to allow it to enter the stomach for digestion.

In healthy individuals, this valve remains shut except for the purposes of driving digestion during mealtime.

However, when the LES doesn’t close properly or tightly enough, a reflux (or regurgitation) of digestive juices and stomach contents can rise back into the esophagus. This leads to the usual acidic sensation and taste that characterizes heartburn.

When does acid reflux become GERD?

Those with an ongoing condition (symptoms occur at least twice weekly) are typically diagnosed with Gastroesophageal Reflux Disease (GERD).

GERD is considered a chronic form of acid reflux. It may require a more proactive treatment strategy than those who experience heartburn less frequently.

GERD can have a dramatic impact on sleep, leading to risks of:

  • aspirating (breathing in) stomach acid while asleep
  • aggravating or contributing to obstructive sleep apnea (OSA), and
  • experiencing sleep fragmentation caused by the discomfort of heartburn symptoms

These chronic symptoms may signal something more serious than occasional distress caused by overeating.

Signs of acid reflux

Acid reflux is one of those medical concerns that may not be apparent for some. For them, acid reflux may not result in the usual burning sensations it causes in the stomach, chest, or throat, or the sour or acidic taste in the mouth after a meal. For them, the only indication they have acid reflux may be a problem with swallowing, a dry nagging cough, the development of asthma, or the repeated loss of one’s voice (laryngitis).

Like many sleep disorders, acid reflux may be a hidden problem. What makes it even more complicated is its overall prevalence. People of all ages, from infancy to the golden years, may experience and suffer from acid reflux, and many don’t know it.

How reflux influences sleep quality

During sleep, a case of reflux may actually allow stomach contents to rise as far as the back of the mouth. This is due to the (usually) horizontal position of sleeping.

While upright and awake during the day, gravity can help limit the impact of reflux to the stomach and mid-chest. However, in a reclining position, gravity can no longer “push down” stomach acid. If the LES is faulty, it may easily fail at its task.

For those who experience reflux during sleep, this means rude awakenings with a sour, burning sensation in the back of the throat. Falling back asleep may require reintroducing gravity at night, either by:

  • sitting partially upright in a reclining chair
  • using a wedge pillow to elevate the upper body, or
  • raising the head of the bed by 3 inches (usually by adding risers to the legs beneath the headboard).

Other tactics include:

  • use of over-the-counter acid neutralizing medications
  • sleeping on the left side, as a right-, back-, or stomach sleeping position typically encourages more reflux

GERD and sleep apnea

Research shows that a relationship exists between obstructive sleep apnea (OSA) and GERD. One report suggests that around 60 percent of patients with OSA also experience GERD. Sometimes, obesity plays a third role in this relationship.

When OSA occurs, changes in pressures within the diaphragm and the chest cavity make conditions favorable for acid reflux. It is also thought that an episode of apnea could alter digestive processes in a way that disrupts the function of the LES.  Apneas also cause more “respiratory effort” during sleep. This might force a change in pressure in the esophagus that leads to an increased chance for reflux.

It’s beneficial to know that treatment of OSA by positive airway pressure (PAP) therapy has been consistently shown to result in an improvement to the symptoms of GERD.

To learn more about the relationship between reflux and all sleep disorders, check out this article published by the National Institutes of Health (NIH). 

Don’t ignore acid reflux

It makes sense to consult a doctor if you struggle with long-term and ongoing problems with heartburn. This means you experience it more than once a week, or have a condition that worsens and is continuous over time.

It’s also important to be honest about any problems you have with sleep (diagnosed or not) or about any of the silent symptoms listed above. Reflux, for instance, could be the reason you have problems with insomnia.

An accurate diagnosis may identify an undetected sleep breathing disorder as well. This knowledge can help you proactively seek appropriate treatment so you can sleep comfortably again.

Author: sleepadmin

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    • Ron McLaney

      This makes perfect sense regarding the bipap machine with high pressure causing my LES to stay open the entire time I am sleeping. The air set at 24 over 16 is too much pressure for a person with my level of gerd. This should be common knowledge in the industry. It is not! Prior to this incident of 1 week my gerd was well controlled. I now suspect the bipap machine has done damage to my LES. Time will tell. Cpap machines have been around since the 80’s. This should be well known. It”‘s been forty years.

      • Linda

        I completely get this now….I refused the sleep study because I KNOW i have sleep apnea. I had surgery on my throat for a “cyst” on my larynx last year and found out I had GERD soon after. I also could not sleep and blamed it on the surgery until today. I will not get a Cpap machine because my throat is tight and causes sleep apnea because GERD causes acid and a tightening of the vocal cords and surrounding neck area, which I believe tightens the soft palate and causes reduced air flow and snoring. I believe this can all be fixed with diet and exercise.

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    • Mack Donald

      Waking up gasping for air. I have noticed i have alot of gas and feel acid in my throat- and have to use the bathroom. My stomach makes noises (gas?). No typical gas pains. Sometimes my nose is abit congested. I wake up freeked out and worried.  After i wake up this way it takes awhile for me to regain my normal breathing pattern. That is, i gasp for a deep breath for at least an hour or two. I am terrified to go back to sleep. I cannot continue this way. My job is physically demanding- and i am very active on a daily basis. I am about 20 lbs over weight. BP average is high normal- about 130/75. This happens on and off a few times a month. I usually do not have any shortness of breath durring the day- unless i have had a bad episode the night before then maybe abit.  I do sleep with a mandibular advancement device which has helped me greatly- but i am still sufferring.  I am writting this at 230 am after having an episode at 1 am. I have a big day at work tomorrow and have no idea how i am going to make it. I have my theories but I am not 100% sure. Have been to dr before and they think I am fine. I dont feel fine. I need sleep!!! I cannot function this way!!! Please any words of advice? I feel like i’m dying. Earlier in the day i got so much work done- cut grass, made a coffee table even grilled some ribs. Maybe the piggie had something to do with it. I am sure there are others dealing with this. In no way do I think I am unique. What have you done to get better? Anything, please!

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