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Related Concept Videos

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...
Pneumothorax-II01:27

Pneumothorax-II

Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:
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 II: Emphysema01:23

Chronic Obstructive Pulmonary Disease II: Emphysema

Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.
Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations01:19

Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations

Chronic Obstructive Pulmonary Disease, or COPD, is a long-term condition marked by persistent and only partially reversible airflow limitation. It involves two overlapping conditions—chronic bronchitis and emphysema—which often co-appear but differ in dominant symptoms and underlying mechanisms.Chronic Bronchitis FeaturesChronic bronchitis presents with a persistent productive cough and thick, sometimes purulent mucus due to airway inflammation, enlarged mucus glands, and goblet cell...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care01:29

Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care

Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...

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Related Experiment Videos

Bronchopulmonary sequestration--a 12-year experience.

Julieta Vieira1, Ana Rego, Ana Oliveira

  • 1Interna Complementar de Pneumologia, Centro Hospitalar de Vila Nova de Gaia, Rua Conceição Fernandes, 4434-502 Vila Nova de Gaia.

Revista Portuguesa De Pneumologia
|November 23, 2006
PubMed
Summary

Bronchopulmonary sequestration (BPS) is a rare lung malformation where abnormal lung tissue lacks normal airway connection and receives systemic blood supply. It is typically intralobar and found in the left lower lobe.

Related Experiment Videos

Area of Science:

  • Medical Science
  • Pulmonology
  • Congenital Malformations

Background:

  • Bronchopulmonary sequestration (BPS) is a rare congenital malformation of the lower respiratory tract.
  • It is characterized by a non-functioning lung tissue mass.
  • This mass lacks normal communication with the tracheobronchial tree and is supplied by systemic arteries.

Purpose of the Study:

  • To define bronchopulmonary sequestration (BPS).
  • To classify BPS based on location.
  • To describe the common characteristics and prevalence of BPS subtypes.

Main Methods:

  • Literature review on bronchopulmonary sequestration.
  • Analysis of classification systems for BPS.
  • Summary of epidemiological data for BPS.

Main Results:

  • BPS is classified into intralobar (ILS) and extralobar (ELS) types.
  • Intralobar sequestration (ILS) constitutes the majority (75%) of cases.
  • BPS predominantly occurs in the left lower lobe.

Conclusions:

  • Bronchopulmonary sequestration is a distinct congenital lung malformation.
  • Classification into ILS and ELS is based on anatomical location.
  • ILS is the most common type, frequently affecting the left lower lobe.