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Related Concept Videos

Acute Pharyngitis01:30

Acute Pharyngitis

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Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
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Acute Respiratory Failure-V01:29

Acute Respiratory Failure-V

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The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
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Acute Respiratory Failure-I01:21

Acute Respiratory Failure-I

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Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
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Acute Respiratory Failure-II01:21

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Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
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Stimulants01:29

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Stimulants are substances that enhance neural activity and elevate dopamine levels in the brain, leading to their highly addictive nature. These drugs include cocaine, amphetamines, MDMA, caffeine, and nicotine, each with distinct mechanisms of action and varied health implications.
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Acute Respiratory Failure-III01:30

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Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without...
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Related Experiment Video

Updated: Jul 17, 2025

Generation of Electronic Cigarette Aerosol by a Third-Generation Machine-Vaping Device: Application to Toxicological Studies
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Vaping-induced acute epiglottitis: a case report.

Amir Khorrami1, Mohammad Ali Khorrami2, Heitham Gheriani3

  • 1Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada. amirkho@student.ubc.ca.

International Journal of Emergency Medicine
|September 5, 2023
PubMed
Summary

Vaping may cause acute epiglottitis in adults, even without infection. Physicians should consider e-cigarette use in diagnosing epiglottitis, as this case shows a young adult recovering after treatment.

Keywords:
Electronic cigarettesEpiglottitisInfectious epiglottitisInflammatory epiglottitisThumb signVaping

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Area of Science:

  • Otolaryngology
  • Pulmonology
  • Toxicology

Background:

  • E-cigarette use (vaping) is rising among young adults.
  • Adverse effects of vaping on the upper airway are under-researched.
  • Acute epiglottitis is a severe condition that can cause airway obstruction, typically due to bacterial infections.

Purpose of the Study:

  • To report a case of acute epiglottitis in a young adult linked to vaping.
  • To highlight the potential for non-infectious causes of epiglottitis.
  • To suggest vaping as a differential diagnosis for epiglottitis.

Main Methods:

  • Case report of a previously healthy 29-year-old male with daily e-cigarette use.
  • Presentation with severe sore throat, dysphagia, hoarseness, and shortness of breath.
  • Diagnostic workup included lateral neck radiograph, direct laryngoscopy, and infectious swabs (negative for Streptococcus and COVID-19).

Main Results:

  • Radiograph showed a thickened epiglottis with a "thumb sign."
  • Laryngoscopy revealed a swollen epiglottis causing partial airway obstruction.
  • Patient improved with intravenous Dexamethasone and antibiotics, with complete symptom resolution.

Conclusions:

  • This is the second reported case of epiglottitis associated with vaping, with no infectious cause found.
  • Vaping should be considered in the differential diagnosis of acute and subacute epiglottitis.
  • Further research is needed on antibiotic efficacy for vaping-induced epiglottitis.