Skip to content
Demystifying Common CPAP Words and Phrases: A Comprehensive Guide

Demystifying Common CPAP Words and Phrases: A Comprehensive Guide


Continuous Positive Airway Pressure (CPAP) therapy is a lifeline for millions of people suffering from sleep apnea, a condition that disrupts their sleep patterns and can have serious health consequences. However, delving into the world of CPAP can feel like navigating a foreign language, with a multitude of terms and phrases that may seem perplexing at first. In this blog, we will demystify some of the most common CPAP words and phrases, providing clear definitions and explanations to help you better understand this vital therapy.

  1. CPAP (Continuous Positive Airway Pressure)

CPAP, which stands for Continuous Positive Airway Pressure, is the cornerstone of sleep apnea treatment. It involves using a CPAP machine to deliver a constant stream of pressurized air through a mask, which keeps your airway open during sleep, preventing apneas (temporary pauses in breathing) and snoring.

  1. Apnea

Apnea refers to the temporary cessation of breathing during sleep, which is the primary characteristic of sleep apnea. These breathing interruptions can last for seconds to minutes and can happen multiple times throughout the night, leading to poor sleep quality.

  1. Hypopnea

Hypopnea is a partial blockage of the airway that results in shallow or slow breathing during sleep. It is less severe than a full apnea but can still disrupt sleep and lead to similar health problems if left untreated.

  1. Mask Types

a. Nasal Mask: This CPAP mask covers only your nose and is a good option if you breathe primarily through your nostrils.

b. Full Face Mask: A full face mask covers both your nose and mouth, making it suitable for mouth breathers or those who prefer the feeling of a more open mask.

c. Nasal Pillow Mask: This type of mask uses small, soft cushions that fit into your nostrils, providing a more minimalistic and less intrusive option.

  1. Humidifier

A CPAP humidifier is an accessory that adds moisture to the air delivered by the CPAP machine. This helps prevent dryness and irritation in your airway and throat.

  1. AHI (Apnea-Hypopnea Index)

The Apnea-Hypopnea Index is a measure used to determine the severity of sleep apnea. It calculates the number of apneas and hypopneas per hour of sleep. A higher AHI score indicates more severe sleep apnea.

  1. CPAP Pressure

CPAP pressure refers to the level of air pressure delivered by the CPAP machine. It is typically prescribed by a healthcare provider based on the results of a sleep study and is customized to keep your airway open effectively.

  1. Ramp

CPAP machines often have a "ramp" feature, which allows the pressure to start at a lower setting and gradually increase to the prescribed pressure over a set period. This helps users ease into therapy comfortably.

  1. Exhalation Relief

Exhalation relief, also known as expiratory pressure relief (EPR) or comfort settings, allows the CPAP machine to lower the pressure during exhalation, making it easier to breathe out against the airflow.

  1. Compliance

Compliance in the context of CPAP therapy refers to how well a patient adheres to their prescribed treatment plan, including the consistent use of the CPAP machine during sleep.

  1. Mask Fit and Seal

A proper mask fit and seal are essential for the effectiveness of CPAP therapy. It ensures that there are no air leaks around the mask, allowing the pressurized air to maintain its intended effect.

  1. Tube or Hose

The tube or hose connects the CPAP machine to the mask, delivering the pressurized air. It should be kept clean and replaced as recommended to prevent contamination and air leaks.

Navigating the world of CPAP therapy can be intimidating, but understanding these common CPAP words and phrases is a crucial first step toward managing your sleep apnea effectively. With the right knowledge and equipment, you can improve your sleep quality, reduce health risks, and wake up feeling refreshed and revitalized. If you're new to CPAP therapy, consult with a healthcare professional or a CPAP provider for personalized guidance and support on your journey to better sleep.


Disclaimer: The information provided on is solely for educational purposes and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. is not responsible or liable for any advice, course of treatment, diagnosis or any other information, services or products that you obtain through this site. Reliance on any information provided by is solely at your own risk.