Three children with plastic bronchitis associated with 2009 H1N1 influenza virus infection

Chikako Terano1, Masaru Miura, Ryuji Fukuzawa

  • 1Department of General Medicine, Tokyo Metropolitan Children's Medical Center, Fuchu, Tokyo, Japan.

Insights

Three children developed plastic bronchitis following 2009 H1N1 influenza virus infection. This condition presented with rapid respiratory distress and whole lung atelectasis, suggesting a link between severe H1N1 and this rare respiratory complication.

Area of Science:

  • Pediatric Pulmonology
  • Infectious Diseases
  • Critical Care Medicine

Background:

  • Plastic bronchitis is a rare condition characterized by the formation of proteinaceous casts in the bronchial tree.
  • The 2009 H1N1 influenza pandemic caused significant respiratory illness in children worldwide.
  • Understanding the potential complications of influenza virus infections is crucial for timely diagnosis and management.

Observation:

  • This report details three pediatric cases of plastic bronchitis.
  • All three children had confirmed 2009 H1N1 influenza virus infection.
  • Common clinical features included rapid and progressive respiratory distress.

Findings:

  • Radiographic findings revealed whole lung atelectasis in all affected children.
  • The clinical presentation suggests a potential association between severe H1N1 influenza and the development of plastic bronchitis.
  • This association highlights a severe, albeit uncommon, complication of H1N1 influenza.

Implications:

  • Clinicians should consider plastic bronchitis in children presenting with severe respiratory symptoms during H1N1 influenza outbreaks.
  • Early recognition and appropriate management may improve outcomes for children with H1N1-associated plastic bronchitis.
  • Further research is warranted to elucidate the pathophysiology and incidence of this complication.

Related Concept Videos

Respiratory Syncytial Virus Disease01:29

Respiratory Syncytial Virus Disease

Human respiratory syncytial virus (RSV) is a widespread pathogen that primarily targets infants and young children but also poses a serious health risk to elderly and immunocompromised individuals. Belonging to the Pneumoviridae family, RSV is a negative-sense, single-stranded RNA virus within the Pneumovirus genus. Its global health burden is significant, with millions of cases annually resulting in hospitalizations and mortality, particularly in resource-limited settings. Although most...
Influenza01:27

Influenza

Influenza is an acute, highly communicable viral disease that affects the respiratory tract and is responsible for seasonal epidemics worldwide. Influenza A is the most prevalent type associated with widespread outbreaks and is subtyped based on two surface glycoproteins: hemagglutinin (H) and neuraminidase (N), as in H1N1. These glycoproteins are essential for viral infectivity, transmission, and immune recognition. Transmission occurs primarily through respiratory droplets and contaminated...
Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

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...
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
Acute Respiratory Failure-III01:30

Acute Respiratory Failure-III

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 causing...
Asthma III: Clinical Manifestations01:13

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...