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Related Concept Videos

Hyperpnea and Hyperventilation01:25

Hyperpnea and Hyperventilation

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Hyperventilation refers to a higher-than-normal rate and depth of breathing, often associated with anxiety attacks. This excessive breathing surpasses the body's need to expel CO2, leading to a condition known as hypocapnia - an unusually low level of carbon dioxide in the blood. Hypocapnia can constrict cerebral blood vessels, reducing blood flow to the brain, which may result in dizziness or fainting. Early signs include tingling and muscle spasms in the hands and face, caused by falling...
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Alterations in Respiration II01:30

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There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
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Acute Respiratory Failure-III01:30

Acute Respiratory Failure-III

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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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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-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.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
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Acute Respiratory Failure-IV01:23

Acute Respiratory Failure-IV

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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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Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
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Hyperventilation syndrome in children with asthma.

Manon Beauvais1, Rola Abou Taam1, Antoine Neuraz2

  • 1Department of Pediatric Pneumology and Allergology, Necker-Enfants Malades Hospital, AP-HP, Université Paris Cité, Paris, France.

The Journal of Asthma : Official Journal of the Association for the Care of Asthma
|April 24, 2023
PubMed
Summary

Hyperventilation syndrome (HVS) does not impact asthma symptoms or lung function in children. The Nijmegen questionnaire is not a reliable diagnostic tool for HVS in this population.

Keywords:
Hyperventilation syndromechildrenhyperventilation testsevere asthma

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Area of Science:

  • Pediatric Pulmonology
  • Respiratory Medicine
  • Clinical Diagnostics

Background:

  • Hyperventilation syndrome (HVS) is a condition that may co-occur with asthma.
  • Diagnosing HVS in children is challenging due to the lack of a gold standard.
  • The impact of HVS on pediatric asthma remains understudied.

Purpose of the Study:

  • To evaluate how HVS affects asthma symptoms and lung function in children.
  • To assess the diagnostic accuracy of the Nijmegen questionnaire compared to a hyperventilation test (HVT) for HVS in asthmatic children.

Main Methods:

  • Retrospective analysis of data from 112 asthmatic children at Necker Hospital.
  • HVS diagnosis was confirmed via a positive hyperventilation test (HVT).
  • Asthma control, exacerbations, lung function, and Nijmegen questionnaire scores were analyzed against HVT results.

Main Results:

  • No significant differences in asthma exacerbations, Asthma Control Test (ACT) scores, or lung function were found between children with positive and negative HVTs.
  • The HVT was positive in 68.5% of the evaluated children.
  • The Nijmegen questionnaire demonstrated low sensitivity (56.3%) and specificity (56.3%) for diagnosing HVS.

Conclusions:

  • Hyperventilation syndrome does not appear to influence asthma symptoms or lung function in pediatric patients.
  • The Nijmegen questionnaire has limited utility for diagnosing HVS in children with asthma due to its low diagnostic accuracy.