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Related Concept Videos

Chronic Pharyngitis01:23

Chronic Pharyngitis

Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
Chronic Obstructive Pulmonary Disease I: Introduction01:23

Chronic Obstructive Pulmonary Disease I: Introduction

Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations01:19

Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations

Chronic Obstructive Pulmonary Disease, or COPD, is a long-term condition marked by persistent and only partially reversible airflow limitation. It involves two overlapping conditions—chronic bronchitis and emphysema—which often co-appear but differ in dominant symptoms and underlying mechanisms.Chronic Bronchitis FeaturesChronic bronchitis presents with a persistent productive cough and thick, sometimes purulent mucus due to airway inflammation, enlarged mucus glands, and goblet cell...
Chronic Obstructive Pulmonary Disease01:24

Chronic Obstructive Pulmonary Disease

COPD is defined as a heterogeneous lung condition marked by persistent respiratory symptoms such as dyspnea, cough, and sputum production, caused by abnormalities in the airways that cause airflow obstruction.
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...

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Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice
15:43

Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice

Published on: March 17, 2014

Chronic sinusitis.

J Steinberg, P Modi

    Canadian Family Physician Medecin De Famille Canadien
    |January 15, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Healthy paranasal sinuses rely on ciliary function for mucus clearance. Impaired sinus physiology can lead to widespread inflammation and infection, differentiating it from rhinitis.

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    Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice
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    Auricular Acupuncture as a Traditional Chinese Medicine Therapy for Chronic Obstructive Pulmonary Disease Combined with Sleep Disorders
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    Area of Science:

    • Otolaryngology
    • Immunology
    • Microbiology

    Background:

    • Paranasal sinuses are normally sterile, maintained by ciliated epithelium and mucus clearance.
    • Physiological function of sinus mucosa is crucial for preventing infection.
    • Environmental and physiological stimuli affect all sinuses, making isolated infections rare.

    Purpose of the Study:

    • To elucidate the physiological mechanisms underlying paranasal sinus health.
    • To differentiate chronic bacterial rhinosinusitis from allergic and non-allergic rhinitis.
    • To emphasize the link between sinus mucosa function and disease understanding.

    Main Methods:

    • Review of physiological processes in paranasal sinus clearance.
    • Comparative analysis of disease mechanisms in rhinosinusitis and rhinitis.
    • Emphasis on the role of ciliary function and mucus transport.

    Main Results:

    • Interference with normal ciliary and mucus clearance leads to sinus inflammation and infection.
    • Widespread sinus involvement is common due to shared stimuli.
    • Distinguishing chronic bacterial rhinosinusitis from other forms of rhinitis is essential.

    Conclusions:

    • Sinus health depends on intact mucociliary clearance.
    • Understanding sinus physiology is key to diagnosing and managing rhinosinusitis.
    • Chronic bacterial rhinosinusitis requires differentiation from other inflammatory nasal conditions.