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Related Concept Videos

Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
Introduction Cardiac Emergencies01:30

Introduction Cardiac Emergencies

Cardiac emergencies are critical situations involving the heart that require immediate medical intervention to prevent severe complications or death. These emergencies often arise from underlying heart conditions that impair the heart's ability to function correctly.Types of Cardiac EmergenciesThe most common types of cardiac emergencies include Acute Coronary Syndrome (ACS), myocardial infarction (MI), cardiac arrest, and heart failure.Acute Coronary Syndrome (ACS)Acute Coronary Syndrome (ACS)...
Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
Cardiomyopathy VII: Pre and Post Operative Nursing Management01:28

Cardiomyopathy VII: Pre and Post Operative Nursing Management

Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...
Coronary Artery Disease III: Clinical Manifestations01:30

Coronary Artery Disease III: Clinical Manifestations

Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...

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Related Experiment Videos

Cardiac dysfunction in severe sepsis and septic shock.

Sergio L Zanotti-Cavazzoni1, Steven M Hollenberg

  • 1Division of Critical Care Medicine, Cooper University Hospital, Robert Wood Johnson Medical School, University of Medicine and Dentistry of New Jersey, Camden, New Jersey 08103, USA. zanotti-sergio@cooperhealth.edu

Current Opinion in Critical Care
|July 28, 2009
PubMed
Summary

Sepsis-induced cardiac dysfunction is common in critically ill patients, marked by reduced contractility and impaired response to fluids. Treatment focuses on infection control and hemodynamic support, with evolving understanding of underlying mechanisms.

Related Experiment Videos

Area of Science:

  • Critical Care Medicine
  • Cardiology
  • Pathophysiology

Background:

  • Severe sepsis and septic shock are leading causes of ICU morbidity and mortality.
  • Sepsis-induced cardiac dysfunction significantly contributes to patient outcomes.

Purpose of the Study:

  • To review the current understanding of sepsis-induced cardiac dysfunction.
  • To discuss clinical presentation, underlying mechanisms, and therapeutic strategies.

Main Methods:

  • Literature review of current understanding of sepsis-induced cardiac dysfunction.
  • Discussion of clinical presentation, mechanisms, and therapy.

Main Results:

  • Cardiac dysfunction in sepsis involves decreased contractility, impaired fluid response, and potential dilatation.
  • Pathophysiology includes circulating factors (cytokines, endothelin-1), nitric oxide's complex role, mitochondrial dysfunction, and apoptosis.
  • Current therapy involves antibiotics, source control, and hemodynamic support (fluids, vasopressors, inotropes).

Conclusions:

  • Sepsis-induced cardiac dysfunction is prevalent in severe sepsis and septic shock.
  • Understanding of mechanisms is advancing, with potential for novel therapies.
  • Current management relies on treating the infection and providing hemodynamic support.