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Related Concept Videos

The Oral Microbiota01:27

The Oral Microbiota

The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...
Physical Assessment of the Respiratory Tract I: Health History01:28

Physical Assessment of the Respiratory Tract I: Health History

Physical assessment of the respiratory tract is critical to patient care. It allows healthcare professionals to identify and manage various respiratory conditions. The process involves a combination of subjective and objective data collection.
Subjective Data
Subjective data provides vital information about the patient's health history and symptoms. This data is typically collected through interviews in which patients describe their experiences, symptoms, and concerns.
Health history and key...
Pneumonia I: Introduction01:30

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
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Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Oral Cavity01:11

Oral Cavity

The oral cavity, or the mouth, is a complex structure in humans that plays a vital role in our day-to-day lives. Its role is not only in chewing and swallowing food; it also plays a role in speech and facial expressions.
Teeth: The teeth are the hardest structures in our bodies. Humans have two sets of teeth throughout their lifetime: deciduous (baby) teeth and permanent teeth. Each tooth consists of several parts: the crown (visible part), the root (embedded in the jaw), enamel (hard outer...
What is Monogastric Digestion?01:50

What is Monogastric Digestion?

The human body contains a monogastric digestive system. In a monogastric digestive system, the stomach only contains one chamber in which it digests food. Several other animal species also have monogastric digestive systems, including pigs, horses, dogs, and birds. This chapter, however, focuses on the human digestive system.
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.

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Related Experiment Video

Updated: May 18, 2026

Therapeutic Effectiveness of a Dietary Supplement for Management of Halitosis in Dogs
07:33

Therapeutic Effectiveness of a Dietary Supplement for Management of Halitosis in Dogs

Published on: July 6, 2015

[Halitosis in certain somatic diseases].

D N Bakhmutov, I G Fedorov, O I Kharchenko

    Stomatologiia
    |September 13, 2012
    PubMed
    Summary

    This study analyzes exhaled breath compounds like hydrogen sulfide and volatile organic compounds in patients with various health conditions. Findings aid in diagnosing the causes of halitosis.

    Area of Science:

    • Biochemistry
    • Medical Diagnostics
    • Otolaryngology

    Context:

    • Exhaled breath analysis offers a non-invasive method for disease detection.
    • Specific volatile organic compounds (VOCs) are biomarkers for various pathologies.
    • Halitosis can be indicative of underlying systemic or local diseases.

    Purpose:

    • To evaluate the composition of exhaled air in patients with otolaryngological, endocrine, gastrointestinal, and oral diseases.
    • To identify and quantify key compounds such as hydrogen sulfide, dimethyl sulfide, putrescine, and cadaverine in exhaled breath.
    • To establish correlations between specific breath biomarkers and diagnosed somatopathies.

    Summary:

    • The study measured concentrations of hydrogen sulfide, dimethyl sulfide, putrescine, and cadaverine in the exhaled air of patients with diverse health conditions.

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    Published on: May 21, 2015

  • Significant variations in these compounds were observed across different pathologies, including otolaryngological, endocrine, gastrointestinal, and oral diseases.
  • These volatile organic compounds serve as potential indicators for various systemic and local health issues.
  • Impact:

    • The data provides crucial insights into the biochemical markers associated with halitosis.
    • This research can lead to improved diagnostic tools for identifying the root causes of bad breath.
    • Understanding breath composition aids in the early detection and management of related diseases.