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Related Concept Videos

Other Pulmonary Disorders01:17

Other Pulmonary Disorders

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Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
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Pneumonia I: Introduction01:30

Pneumonia I: Introduction

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Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
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Pneumonia I: Introduction01:29

Pneumonia I: Introduction

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Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...
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Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

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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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Breathing01:05

Breathing

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The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
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Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

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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...
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Open Tracheostomy Gastric Acid Aspiration Murine Model of Acute Lung Injury Results in Maximal Acute Nonlethal Lung Injury
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Aspiration-related lung diseases.

Andrew D Prather1, Tristan R Smith, Dana M Poletto

  • 1*Department of Radiology §Diagnostic Radiology Residency, University of South Florida College of Medicine, Tampa, FL ‡Department of Radiology, National Jewish Health, Denver, CO †Argos Laboratory, Fortaleza, Brazil.

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Summary

Aspiration lung diseases are common and present with diverse imaging findings. This review covers various types, focusing on radiographic features and differential diagnoses for aspiration.

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Area of Science:

  • Pulmonology
  • Radiology

Background:

  • Aspiration is a frequent clinical issue with diverse radiographic presentations.
  • It encompasses a range of conditions, from aspiration pneumonitis to lipoid pneumonia and lung abscesses.
  • Pathophysiology involves factors like reduced consciousness, dysphagia, and impaired defenses.

Purpose of the Study:

  • To review the spectrum of aspiration lung diseases.
  • To highlight key imaging features for each type.
  • To discuss differential diagnoses for aspiration-related lung conditions.

Main Methods:

  • Pictorial essay format.
  • Review of radiographic manifestations of aspiration.
  • Focus on imaging features and differential diagnosis.

Main Results:

  • Aspiration presents with varied radiographic findings.
  • Conditions include diffuse aspiration bronchiolitis, pneumonitis, lipoid pneumonia, and fibrosis.
  • Imaging is crucial for diagnosis and differentiating from other lung diseases.

Conclusions:

  • Aspiration lung diseases are underrecognized.
  • Radiographic assessment is key to identifying and classifying these conditions.
  • Understanding imaging features aids in accurate diagnosis and management.