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Related Concept Videos

Pulmonary Embolism I: Introduction01:29

Pulmonary Embolism I: Introduction

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Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
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Pulmonary Embolism I: Introduction01:19

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A blood clot, or thrombus, is a semi-solid mass composed of fibrin, platelets, and red blood cells. When it forms within a vessel, it can obstruct blood flow, known as thrombosis. If part of the clot detaches, it becomes an embolus that can travel and block distant vessels. When this occurs in the pulmonary arteries, it causes a condition known as pulmonary embolism (PE).Origin and ImpactMost often, the embolus originates from a thrombus in the deep veins of the lower limbs, a condition called...
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Pneumothorax-I01:26

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A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
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Pneumothorax II: Pathophysiology01:08

Pneumothorax II: Pathophysiology

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Pneumothorax means the presence of air in the pleural space — the thin potential gap between the visceral and parietal pleura. This condition disrupts the normal pressure balance that keeps the lungs inflated, leading to partial or complete collapse of the affected lung.Normal physiologyUnder normal conditions, the pleural space maintains a slightly negative intrapleural pressure, which keeps the lungs expanded against the chest wall. This negative pressure creates a delicate balance...
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Physical Principles Governing Gas Exchange01:16

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Gas behavior plays a vital role in understanding bodily processes such as external and internal respiration. External respiration involves the diffusion of oxygen into the blood and carbon dioxide out of it in the lungs. In contrast, internal respiration happens in body tissues, where these gases move in opposite directions.
Gas Laws Governing Respiration
The behavior of gases is guided by Dalton's Law of partial pressures and Henry's Law.
Dalton's Law asserts that the total...
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Atelectasis II: Pathophysiology01:10

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Atelectasis develops when alveoli lose their air and collapse inward. Because lung tissue is naturally elastic, these air sacs shrink rather than remaining open. Collapsed alveoli are no longer ventilated, reducing their role in gas exchange. Blood flow may continue in these regions, creating a ventilation–perfusion mismatch. Clinical findings include decreased breath sounds, dullness to percussion, reduced chest expansion, and decreased tactile fremitus as sound transmission through...
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Related Experiment Video

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Induction of Cerebral Arterial Gas Embolism in Rat
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[Gas embolism].

Rafael Fagionato Locali1, Eugênio Vieira Machado Almeida2

  • 1EPM, UNIFESP.

Revista Brasileira De Terapia Intensiva
|October 14, 2014
PubMed
Summary
This summary is machine-generated.

Gas embolism is a serious complication of medical procedures. Understanding its causes, diagnosis, and treatments is crucial for patient safety in various medical fields.

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Area of Science:

  • Medical Science
  • Surgical Complications
  • Patient Safety

Context:

  • Gas embolism is an iatrogenic complication with significant morbidity and mortality.
  • It arises from various clinical-surgical procedures, necessitating healthcare professional awareness.
  • This review covers arterial, venous, and paradoxical embolism subtypes.

Purpose:

  • To review the pathophysiology, diagnosis, and therapeutic strategies for gas embolism.
  • To consolidate essential knowledge for medical practitioners across specialties.
  • To highlight the importance of recognizing and managing gas embolism.

Summary:

  • The article provides a conceptual review of gas embolism, differentiating between arterial and venous types.
  • It details the primary physiopathology, diagnostic methods, and therapeutic interventions for each type.
  • Paradoxical embolism, the conversion of venous to arterial embolism, is also discussed.

Impact:

  • Enhanced understanding of gas embolism pathophysiology, diagnosis, and treatment.
  • Improved patient safety through better recognition and management of this complication.
  • Provides a foundational resource for healthcare professionals dealing with gas embolism.