science

Sleep-related breathing disorder

Sleep-related breathing disorder is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sleep-related breathing disorder rather than just read about it. In short: An SRBD (short for sleep-related breathing disorder) is a sleep disorder in which abnormalities in breathing occur during sleep which may or may not be present while awake. According to the International Classification of Sleep Disorders, sleep-related breathing disorders are classified as follows: Sleep apnea, including the more specific disorders of obstructive sleep apnea and central sleep apnea Central hypoventi…

Key takeaways

Sleep-related breathing disorder belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Sleep-related breathing disorder to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Sleep-related breathing disorder from memory before moving on to harder problems.

Reference excerpt

An SRBD (short for sleep-related breathing disorder) is a sleep disorder in which abnormalities in breathing occur during sleep which may or may not be present while awake. According to the International Classification of Sleep Disorders, sleep-related breathing disorders are classified as follows:

Sleep apnea, including the more specific disorders of obstructive sleep apnea and central sleep apnea Central hypoventilation syndrome Obesity hypoventilation syndrome Sleep-related hypoxemia disorder Sleep-related hypoventilation due to a medication or substance, or due to a medical disorder Isolated symptoms produced by breathing during sleep, including snoring and catathrenia There are many different surgical procedures for sleep-related breathing disorders, sometimes collectively termed "sleep surgery".

Severity of sleep apneas The most severe of the sleep apneas is obstructive sleep apnea. Apnea is obstructive only when polysomnography reveals a continued inspiratory effort, evidenced by abdominal and thoracic muscle contraction. Sleep apnea is measured by the apnea-hypopnea index (AHI). An AHI is determined with a sleep study. AHI values for adults are categorized as:

Normal: AHI<5 Mild sleep apnea: 5≤AHI<15 Moderate sleep apnea: 15≤AHI<30 Severe sleep apnea: AHI≥30 An episode is when a person hesitates to breathe or stops their breathing altogether.

Treatments of sleep apnea The most common treatment for sleep apnea is the use of continuous positive airway pressure with a CPAP machine. A CPAP machine pushes air through the nose and/or mouth, which applies air pressure to keep the throat open while asleep. This prevents pauses in breathing. This is helpful in the sense of people with more severe sleep apnea related problems. This CPAP machine is usually the first line of treatment and one of the most effective ways to treat the disease. This machine can help with the quality of sleep someone receives when using it and also lowering their blood pressure and other medical-related problems one might have when being diagnosed with this disease. Other forms of treatment to consider are oral appliances. An oral appliance helps keep the jaw forward and the tongue relaxed. There are a number of surgical treatments available. There are many surgical procedures for sleep apnea. The most common of these is called a uvulopalatopharyngoplasty (UPPP). One can also consult their doctors about losing some weight which can also help in most cases.

Central hypoventilation syndrome "Central hypoventilation syndrome, sometimes referred to as Ondine's curse, is an inability of the brain to detect changes in carbon dioxide levels in the body during sleep. The human body determines the amount of oxygen it needs by monitoring how much carbon dioxide is in the blood." Central hypoventilation syndrome is caused by certain receptors in the brain failing to recognize changes in carbon dioxide levels during sleep, leading to a low breathing rate and low blood concentration of oxygen. Some of the causes of this disease are sudden onset obesity or spinal cord surgery. This is one of the least common sleep disorders and has the least amount of research done for it.

Treatments of central hypoventilation syndrome The treatment for central hypoventilation syndrome involves breathing support during sleep, often through the assistance of a mechanical ventilator. In some cases, this type of breathing support may be necessary during waking hours as well. Often referred to as oxygen therapy, it can use a CPAP machine as well. Again weight loss is a big help as well and listed as one of the top ways to get rid of the problem.

References

Worked examples

Example 1 — a first encounter with Sleep-related breathing disorder

Start with the simplest possible case. Write down what Sleep-related breathing disorder claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sleep-related breathing disorder before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sleep-related breathing disorder ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sleep-related breathing disorder

In research: Sleep-related breathing disorder appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sleep-related breathing disorder in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sleep-related breathing disorder is common in secondary-school and first-year university syllabi. It links to neighbouring topics Sleep disorders, so understanding it makes those chapters shorter.
In everyday life: Look for Sleep-related breathing disorder outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Sleep-related breathing disorder in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sleep-related breathing disorder means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Sleep-related breathing disorder out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sleep-related breathing disorder in simple terms?

Why does Sleep-related breathing disorder matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sleep-related breathing disorder?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sleep-related breathing disorder.