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Related Concept Videos

Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

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Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
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Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

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Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
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Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

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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...
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Pulmonary Hypertension: Classification and Pathogenesis01:30

Pulmonary Hypertension: Classification and Pathogenesis

273
Pulmonary hypertension (PH) is a severe health condition in which the mean pulmonary arterial pressure increases to 25 mmHg or more, even when the body is at rest. This high pressure in the blood vessels that transport blood from the heart to the lungs can cause various symptoms, including shortness of breath, can lead to right heart failure, and significantly affect the overall quality of life.
There are various classifications for PH, each relating to different underlying causes and also...
273
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

31
Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
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Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

334
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
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Related Experiment Video

Updated: Sep 1, 2025

Left Atrial Stenosis Induced Pulmonary Venous Arterialization and Group 2 Pulmonary Hypertension in Rat
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Right Ventricular Failure and Pulmonary Hypertension.

Sara E Crager1, Caroline Humphreys2

  • 1Emergency Medicine, University of California Los Angeles, 924 Westwood Boulevard, Suite 300, Los Angeles, CA 90095, USA; Critical Care Anesthesia, Los Angeles, CA, USA.

Emergency Medicine Clinics of North America
|August 11, 2022
PubMed
Summary

Right ventricular dysfunction is critical in emergency medicine. Understanding its pathophysiology helps emergency physicians avoid dangerous pitfalls in managing patients with right ventricular failure and pulmonary hypertension.

Keywords:
Cardiogenic shockMassive pulmonary embolismPulmonary hypertensionRight ventricular failure

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Area of Science:

  • Cardiology
  • Emergency Medicine
  • Pulmonology

Background:

  • Right ventricular dysfunction is a key factor in various emergency department (ED) conditions.
  • Routine ED interventions like fluid administration and intubation can critically worsen patients with right ventricular failure and pulmonary hypertension.

Purpose of the Study:

  • To highlight the importance of understanding right ventricular failure pathophysiology for emergency physicians.
  • To emphasize avoiding diagnostic and management errors in the ED for patients with right ventricular dysfunction.

Main Methods:

  • Review of existing literature on right ventricular dysfunction in the ED.
  • Analysis of common interventions and their impact on right ventricular failure.
  • Discussion of diagnostic and management strategies.

Main Results:

  • Right ventricular dysfunction significantly impacts patient outcomes in the ED.
  • Standard ED procedures can precipitate severe deterioration in susceptible patients.
  • Mismanagement can lead to increased morbidity and mortality.

Conclusions:

  • Emergency physicians must grasp the pathophysiology of acute decompensated right ventricular failure.
  • Awareness can prevent critical errors in diagnosis and treatment.
  • Improved understanding leads to better patient care and reduced adverse events.