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Related Concept Videos

Respiration and Gaseous Exchange01:20

Respiration and Gaseous Exchange

The intricate interplay between the cardiovascular and respiratory systems is crucial for efficiently transporting respiratory gases throughout the body. Let us explore the cardiovascular system's multifaceted functions, emphasizing its pivotal role in gas exchange.
Respiration involves the exchange of gases, especially oxygen (O2) and carbon dioxide (CO2), between the alveoli and body cells, a process facilitated by blood circulation. As a result, the cardiovascular system, which involves the...
Overview of Systemic and Pulmonary Circulation01:15

Overview of Systemic and Pulmonary Circulation

The systemic and pulmonary circuits are crucial components of the circulatory system, working together to transport blood between the heart, lungs, and the rest of the body. The process begins with pulmonary circulation, where deoxygenated blood is pumped from the right ventricle to the lungs via the pulmonary trunk and arteries. Upon reaching the lungs, the blood becomes oxygenated and returns to the heart, specifically to the left atrium, via the pulmonary veins.
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Overview of Pulmonary Circulation01:19

Overview of Pulmonary Circulation

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The process begins with the right ventricle of the heart pumping deoxygenated blood into the pulmonary trunk. This large vessel extends about 5 centimeters before splitting into the left and right pulmonary arteries. These arteries...
Gross Anatomy of the Lungs01:17

Gross Anatomy of the Lungs

The lungs are a pair of vital organs connected to the trachea via the left and right bronchi. The base of these organs meets the dome-shaped muscle known as the diaphragm. Encased by the pleurae, the lungs contact the mediastinum. The right lung is shorter yet wider, and has a larger volume than the left lung. The left lung has an indentation known as the cardiac notch. The superior region of the lungs is referred to as the apex, whereas the base is the lower region near the diaphragm. The...
Pulmonary Embolism I: Introduction01:29

Pulmonary Embolism I: Introduction

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Pulmonary Edema II: Pathophysiology01:18

Pulmonary Edema II: Pathophysiology

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Related Experiment Video

Updated: Jun 29, 2026

Quantifying Single Microvessel Permeability in Isolated Blood-perfused Rat Lung Preparation
07:22

Quantifying Single Microvessel Permeability in Isolated Blood-perfused Rat Lung Preparation

Published on: June 30, 2014

Pulmonary edema during volume infusion.

L Stein, J J Beraud, M Morissette

    Circulation
    |September 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Reduced plasma colloid osmotic pressure, not just filling pressure, can cause pulmonary edema in hypovolemic patients. Crystalloid fluid infusions may increase this risk by lowering colloid osmotic pressure.

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    Area of Science:

    • Cardiology
    • Pulmonary Medicine
    • Critical Care Medicine

    Background:

    • Pulmonary edema is a critical condition often associated with fluid management.
    • Understanding the interplay between cardiac filling pressures and plasma oncotic pressure is vital for patient outcomes.

    Purpose of the Study:

    • To investigate the relationship between left ventricular filling pressure, plasma colloid osmotic pressure, and the development of pulmonary edema in hypovolemic patients.
    • To identify risk factors for pulmonary edema during fluid resuscitation.

    Main Methods:

    • Examined 37 hypovolemic patients, monitoring left ventricular filling pressure and plasma colloid osmotic pressure.
    • Categorized patients based on pulmonary edema development and fluid administration (colloids vs. crystalloids).
    • Assessed the effect of furosemide on pulmonary edema and plasma colloid osmotic pressure.

    Main Results:

    • Pulmonary edema developed in 16 patients during fluid infusion.
    • Patients without edema had normal or slightly elevated left ventricular filling pressure and normal colloid osmotic pressure.
    • Edema occurred in patients with elevated filling pressure and normal colloid osmotic pressure (n=5), and in those with normal filling pressure but significantly reduced colloid osmotic pressure (n=11), often after crystalloid infusion.

    Conclusions:

    • Reduced plasma colloid osmotic pressure is a significant risk factor for pulmonary edema in hypovolemic patients, even with normal left ventricular filling pressure.
    • Aggressive crystalloid fluid administration can be hazardous by lowering plasma colloid osmotic pressure, potentially leading to pulmonary edema.
    • Monitoring and maintaining plasma colloid osmotic pressure is crucial during fluid resuscitation in at-risk populations.