Hypopnea is a condition in which patient suffer from partial blockage of the airway, also known as Obstructive sleep apnea.

Apnea is a full obstruction of airway when you sleep, which is a syndrome of OSAHS.

Sleep apnea and Hypopnea both are severe medical conditions, which can lead to complications if untreated. In the events or episode of Hypopnea, a person may feel 10 second period when their breathing is reduced by 50 a percent or more.

Causes For Hypopnea

This conditions usually occur when your airways connected to lungs becomes narrow during the sleep. It also happens when the muscle in the back of the throat relax too much, which causes the airway to narrow and collapse. This prevents the person from taking a regular breath.

During these episodes of apnea, the brain and other muscles of the body don’t get proper oxygen, which triggers the brain to wake; this helps to start breathing again.

What Are The Types Of Hypopnea?

There are three types:

  • Central  – In this condition, breathing effort and airflow are reduced
  • Obstructive  – In obstructive Hypopnea, the only airflow is reduced
  • Mixed  – This condition is the mixture of the central and obstructive Hypopnea

Sleep Apnea vs. Hypopnea

Sleep apnea and Hypopnea are very similar. We can say that this is a type of sleep apnea. The word Hypopnea means reduced breathing, while in apnea patient experience periods of no breathing.

In Hypopnea the airway is partially blocked, while in sleep apnea the airway is completely blocked.

Symptoms of Hypopnea

The symptoms are very similar to the symptoms of obstructive sleep apnea. However, the patient can feel signs including:

  • Excessive daytime sleepiness
  • Insomnia
  • Loud snoring
  • Fatigue
  • Mood changes
  • Walking at night

Many people don’t realize they are experiencing this condition, because the symptoms described above can also relate to stress.

Apnea-Hypopnea Index

This index refers to the number of apneas a person has in per hour of sleep. The doctor can use the AHI to know the severity of this disease:

  • None or minimal – Less than five times per hour
  • Mild – five to fifteen times per hour
  • Moderate – fifteen to 30 events per hour
  • Severe – more than 30 times per hour


A doctor may also use the RDI or Respiratory Disturbance Index to determine the best treatment plan.

Treatment Of This Disease

The treatment depends on the cause and its severity. The primary goal of the procedure is to remove the blockage or hurdle in the airway.

There are some ways to remove this kind of disease:

  • Removal of excessive tissues surgically
  • Use of the device to open the airway
  • Use of (CPAP) continuous positive air pressure machine

The CPAP device is usually used at night too. It provides a constant supply of air to the lungs, which prevents breathing from slowing down.


Some lifestyle changes can change your health condition too. These changes can also help you to reduce the effects of Hypopnea and apnea.

  • Losing extra weight
  • Quitting smoking
  • Quitting drinking alcohol
  • Avoiding sedatives


You can also use the drug to mitigate the impact and episodes of Hypopnea. You can buy modafinil online to reduce the blockage in airways.

Risk Factors

Many risks are associated with obstructive sleep apnea:

  • Obesity – According to the survey, people who have sleep apnea are obese or overweight. Extra fat around the neck and airways, block the throat
  • Narrow airway – Some people have small airways naturally
  • Diabetes – People who have diabetes, chances are high that they will also face OSAHS
  • Family history – People who have a family member with sleep apnea, might forward its symptoms into next generation
  • Smoking – Smoking plays a vital role in the development of sleep apnea than a nonsmoker