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Related Concept Videos

Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.01:25

Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.

Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
Respiratory Assessment: Purpose and Indications01:19

Respiratory Assessment: Purpose and Indications

Respiratory assessment is a cornerstone of nursing assessments, crucial for the early detection of patient deterioration. This evaluation transcends routine procedures, representing a critical skill nurses must master to ensure optimal patient care.
Objectives and Importance:
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Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
Atelectasis II: Pathophysiology01:10

Atelectasis II: Pathophysiology

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 collapsed...
Pneumothorax-I01:26

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Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
Factors Affecting Pulmonary Ventilation01:19

Factors Affecting Pulmonary Ventilation

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Related Experiment Video

Updated: Jun 16, 2026

Left Atrial Stenosis Induced Pulmonary Venous Arterialization and Group 2 Pulmonary Hypertension in Rat
08:34

Left Atrial Stenosis Induced Pulmonary Venous Arterialization and Group 2 Pulmonary Hypertension in Rat

Published on: November 18, 2018

Clinical implications of heart-lung interactions.

L Smeding1, E Lust, F B Plötz

  • 1Department of Paediatric Intensive Care, VU University Medical Centre, Amsterdam, the Netherlands.

The Netherlands Journal of Medicine
|February 20, 2010
PubMed
Summary

Positive pressure ventilation, unlike spontaneous breathing, increases lung and airway pressure. This review explores how these pressure changes impact heart function during mechanical ventilation and spontaneous respiration.

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Invasive Hemodynamic Monitoring of Aortic and Pulmonary Artery Hemodynamics in a Large Animal Model of ARDS
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Published on: November 26, 2018

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Last Updated: Jun 16, 2026

Left Atrial Stenosis Induced Pulmonary Venous Arterialization and Group 2 Pulmonary Hypertension in Rat
08:34

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Published on: November 18, 2018

Invasive Hemodynamic Monitoring of Aortic and Pulmonary Artery Hemodynamics in a Large Animal Model of ARDS
08:12

Invasive Hemodynamic Monitoring of Aortic and Pulmonary Artery Hemodynamics in a Large Animal Model of ARDS

Published on: November 26, 2018

Area of Science:

  • Cardiopulmonary Physiology
  • Respiratory Medicine
  • Cardiology

Background:

  • Spontaneous respiration involves negative intrathoracic pressure and cyclic lung volume changes.
  • Positive pressure ventilation (PPV) causes simultaneous increases in transpulmonary pressure and lung volumes.
  • PPV can differentially affect biventricular cardiac loading and function based on underlying cardiopulmonary status.

Purpose of the Study:

  • To update knowledge on the pathophysiology of heart-lung interactions.
  • To explain circulatory alterations during airway pressure changes.
  • To elucidate mechanisms of disease and treatment efficacy in spontaneous and mechanical ventilation.

Main Methods:

  • Literature review of current research on cardiorespiratory interactions.
  • Analysis of physiological changes during spontaneous and positive pressure ventilation.
  • Synthesis of data on biventricular function under varying ventilatory conditions.

Main Results:

  • PPV alters transpulmonary pressure and lung volumes, impacting cardiac hemodynamics.
  • The effects on cardiac loading and function are dependent on the patient's baseline cardiopulmonary condition.
  • Understanding these interactions is crucial for managing patients on mechanical ventilation.

Conclusions:

  • Mechanical ventilation significantly influences cardiovascular function through altered pressure dynamics.
  • Further research into heart-lung interactions can optimize ventilatory strategies and patient outcomes.
  • This review provides insights into managing circulatory complications associated with different modes of breathing support.