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Pulmonary Edema II: Pathophysiology

Pulmonary Edema II: Pathophysiology

Pulmonary edema is the accumulation of fluid in the interstitial and alveolar spaces of the lungs, impairing gas exchange and oxygen delivery. It may be cardiogenic or noncardiogenic, but both reduce oxygenation and lung compliance.Cardiogenic Pulmonary EdemaCardiogenic edema results from increased hydrostatic pressure in pulmonary capillaries, usually due to left ventricular dysfunction from myocardial infarction, heart failure, or valvular disease. Ineffective cardiac pumping causes blood to...

Pneumothorax-I

Pneumothorax-I

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.

Pneumothorax II: Pathophysiology

Pneumothorax II: Pathophysiology

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 between...

Pulmonary Embolism I: Introduction

Pulmonary Embolism I: Introduction

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...

Pulmonary Embolism I: Introduction

Pulmonary Embolism I: Introduction

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...

Pneumothorax-II

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:

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Point-of-Care Lung Ultrasound in Adults: Image Acquisition

Point-of-Care Lung Ultrasound in Adults: Image Acquisition

Published on: March 3, 2023

Posttraumatic anomalous pulmonary edema.

Travis S Henry¹, Joseph M Mettenburg, Kristopher W Cummings

¹Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA 30322, USA. travis.s.henry@gmail.com

Journal of Thoracic Imaging

|February 9, 2012

Summary

This summary is machine-generated.

Focal pulmonary edema can indicate venous issues. A rare case highlights how left upper lobe edema, linked to anomalous pulmonary venous return, led to diagnosing clavicular subluxation after trauma.

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Area of Science:

Cardiology
Radiology
Pulmonology

Background:

Focal pulmonary edema typically results from increased venous hydrostatic pressure, commonly associated with mitral valve regurgitation or pulmonary venous obstruction.
These conditions often manifest in the right upper lobe or any lobe, depending on the cause (neoplastic, fibrotic, iatrogenic).

Observation:

A case presented with focal pulmonary edema specifically in the left upper lobe.
The patient had partial anomalous pulmonary venous return involving the left superior pulmonary vein.

Findings:

The draining left brachiocephalic vein was compressed by a subluxed sternoclavicular joint.
This compression, secondary to trauma, led to the localized pulmonary edema.

Implications:

Recognizing focal edema patterns and anomalous pulmonary veins is crucial for diagnosing rare conditions.
This case highlights the importance of considering traumatic clavicular subluxation as a cause of venous compression and subsequent pulmonary edema.