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  2. Nasal cycle - Wikipedia

    en.wikipedia.org/wiki/Nasal_cycle

    A CT scan showing evidence of the nasal cycle: the more patent airway is on the right of the image, the swollen turbinates congesting the left. The nasal cycle is the subconscious [1] [2] alternating partial congestion and decongestion of the nasal cavities in humans and other animals. This results in greater airflow through one nostril with ...

  3. Nasal congestion - Wikipedia

    en.wikipedia.org/wiki/Nasal_congestion

    Nasal congestion can interfere with hearing and speech. Significant congestion may interfere with sleep, cause snoring, and can be associated with sleep apnea or upper airway resistance syndrome. [5] In children, nasal congestion from enlarged adenoids has caused chronic sleep apnea with insufficient oxygen levels and hypoxia.

  4. Rhinitis - Wikipedia

    en.wikipedia.org/wiki/Rhinitis

    Rhinitis medicamentosa is a form of drug-induced nonallergic rhinitis which is associated with nasal congestion brought on by the use of certain oral medications (primarily sympathomimetic amine and 2-imidazoline derivatives) and topical decongestants (e.g., oxymetazoline, phenylephrine, xylometazoline, and naphazoline nasal sprays) that ...

  5. Rhinitis medicamentosa - Wikipedia

    en.wikipedia.org/wiki/Rhinitis_medicamentosa

    Rhinitis medicamentosa (or RM, also known as rebound congestion) is a condition of rebound nasal congestion suspected to be brought on by extended use of topical decongestants (e.g., oxymetazoline, phenylephrine, xylometazoline, and naphazoline nasal sprays) and certain oral medications (e.g., sympathomimetic amines and various 2-imidazolines) that constrict blood vessels in the lining of the ...

  6. Sinusitis - Wikipedia

    en.wikipedia.org/wiki/Sinusitis

    Nasal endoscopy and clinical symptoms are also used to make a positive diagnosis. [28] A tissue sample for histology and cultures can also be collected and tested. [68] Nasal endoscopy involves inserting a flexible fiber-optic tube with a light and camera at its tip into the nose to examine the nasal passages and sinuses.

  7. Continuous positive airway pressure - Wikipedia

    en.wikipedia.org/wiki/Continuous_positive_airway...

    A full face mask over the mouth and nose is another approach for people who breathe out of their mouths when they sleep. [13] Often, oral masks and naso-oral masks are used when nasal congestion or obstruction is an issue. [20] There are also devices that combine nasal pressure with mandibular advancement devices (MAD). Example of a full face ...

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