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Related Concept Videos

Pulmonary Cycle: Exhalation01:17

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In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
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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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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.
Ensure that patients are monitored continuously for their response to therapy, including changes in...
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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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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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Acute Respiratory Failure-IV01:23

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Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
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Generation, Amplification, and Titration of Recombinant Respiratory Syncytial Viruses
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Viral bronchiolitis.

Todd A Florin1, Amy C Plint2, Joseph J Zorc3

  • 1Division of Pediatric Emergency Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.

Lancet (London, England)
|August 24, 2016
PubMed
Summary
This summary is machine-generated.

Viral bronchiolitis in infants requires clinical diagnosis, with supportive care focusing on oxygenation and hydration. Bronchodilators and corticosteroids offer no proven benefit for first-time episodes.

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Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Respiratory Medicine

Background:

  • Viral bronchiolitis is a frequent respiratory illness in infants and young children.
  • Significant research exists, summarized in systematic reviews and clinical practice guidelines.
  • Concerns include morbidity and healthcare costs associated with the condition.

Purpose of the Study:

  • To review current evidence and guidelines for diagnosing and managing viral bronchiolitis.
  • To evaluate the efficacy of various treatment modalities.
  • To inform clinical practice for pediatric respiratory infections.

Main Methods:

  • Systematic review of existing research and clinical practice guidelines.
  • Analysis of evidence regarding diagnostic testing, supportive care, and pharmacological interventions.
  • Evaluation of data on advanced respiratory support for severe cases.

Main Results:

  • Clinical diagnosis is recommended for typical viral bronchiolitis presentations.
  • Supportive management focusing on oxygenation and hydration is standard.
  • Bronchodilators and corticosteroids show no benefit in first-episode bronchiolitis.
  • Evidence for hypertonic saline is still evolving.
  • High-flow nasal cannula and CPAP may aid severe cases, but data are limited.

Conclusions:

  • Viral bronchiolitis diagnosis relies on clinical assessment, minimizing diagnostic tests.
  • Supportive care is the cornerstone of management.
  • Current evidence does not support routine use of bronchodilators or corticosteroids.
  • Further research is needed for treatments like hypertonic saline and advanced respiratory support.