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Related Concept Videos

Anatomy of Respiratory System I: Upper Respiratory Tract01:29

Anatomy of Respiratory System I: Upper Respiratory Tract

The upper respiratory tract plays a vital role in the respiratory system, comprising several structures that facilitate air intake and prepare air for the lungs. It also serves as the first line of defense against pathogens and particles. This tract includes the nose and nasal cavity, the oral cavity, the paranasal sinuses, and the pharynx, each with specific functions and features.
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The nose and nasal cavity represent the main external openings of the respiratory tract.
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,...
Nose and Nasal Cavity01:24

Nose and Nasal Cavity

The nose is composed of an observable exterior segment (external nose) and an internal segment within the skull known as the nasal cavity (internal nose). The external nose, visible on the face, consists of a framework of bone and hyaline cartilage enveloped in skin and muscle and lined with a mucous membrane. This structure is supported by the frontal bone, nasal bones, and maxillary bone and is supplemented by a cartilaginous framework comprising the septal nasal cartilage, lateral nasal...
Epistaxis01:30

Epistaxis

Epistaxis, or nosebleeds, occurs when small, swollen blood vessels in the nasal mucous membrane rupture. Typically, the anterior septum is the primary site of occurrence.
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Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Microbiota of the Respiratory Tract01:29

Microbiota of the Respiratory Tract

The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more like...

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The role, evaluation, and effects of comorbidities in patients with chronic rhinosinusitis.

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Immunofluorescent Labeling in Nasal Mucosa Tissue Sections of Allergic Rhinitis Rats via Multicolor Immunoassay
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Immunofluorescent Labeling in Nasal Mucosa Tissue Sections of Allergic Rhinitis Rats via Multicolor Immunoassay

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Chapter 8: Rhinosinusitis.

Mary S Georgy, Anju T Peters

    Allergy and Asthma Proceedings
    |July 17, 2012
    PubMed
    Summary
    This summary is machine-generated.

    Rhinosinusitis, or sinus inflammation, affects 16% of the population. Acute cases often resolve without antibiotics, but bacterial infections may require treatment with amoxicillin or other first-line therapies.

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    Area of Science:

    • Otolaryngology
    • Immunology
    • Microbiology

    Background:

    • Rhinosinusitis involves inflammation of the paranasal sinuses, categorized by duration: acute (<4 weeks), subacute (4-8 weeks), and chronic (>8-12 weeks).
    • Chronic rhinosinusitis (CRS) is further classified into CRS with nasal polyps, CRS without nasal polyps, and allergic fungal rhinosinusitis.
    • Sinus cavities feature ciliated epithelial cells crucial for mucus clearance, maintaining a healthy sinus environment.

    Purpose of the Study:

    • To define rhinosinusitis and its classifications based on symptom duration.
    • To outline the pathophysiology and drainage pathways of the paranasal sinuses.
    • To discuss the etiology of acute rhinosinusitis and appropriate treatment strategies.

    Main Methods:

    • Review of definitions and classifications of rhinosinusitis based on symptom duration.
    • Description of sinus anatomy and the role of cilia in mucus clearance.
    • Analysis of etiological factors for acute rhinosinusitis and recommended therapeutic approaches.

    Main Results:

    • Most acute rhinosinusitis cases are viral and resolve within two weeks without antibiotics.
    • Bacterial infection is suspected if symptoms persist or worsen after 7-10 days.
    • First-line antibiotic options include amoxicillin, trimethoprim-sulfamethoxazole, or doxycycline.

    Conclusions:

    • Acute rhinosinusitis predominantly has viral origins, with most cases resolving spontaneously.
    • Bacterial infections warrant consideration for antibiotic therapy, with specific first-line agents recommended.
    • Intranasal corticosteroids combined with antibiotics offer enhanced symptom reduction compared to antibiotics alone.