Left Ventricular Remodeling after Myocardial Infarction: From Physiopathology to Treatment

Sabina Andreea Leancă1, Daniela Crișu1, Antoniu Octavian Petriș1,2

  • 1Department of Cardiology, Emergency Clinical Hospital "Sf. Spiridon", Bd. Independentei nr. 1, 700111 Iasi, Romania.

Insights

Myocardial infarction (MI) causes heart damage leading to heart failure. This review details the mechanisms of cardiac remodeling after MI and therapies to improve heart structure and function.

Area of Science:

  • Cardiology
  • Pathophysiology
  • Pharmacology

Background:

  • Myocardial infarction (MI) is a major global cause of death.
  • Atherosclerotic plaque rupture and coronary thrombosis are common causes of MI.
  • MI leads to cardiomyocyte death, inflammation, and fibrosis, potentially causing heart failure (HF).

Purpose of the Study:

  • To describe the pathophysiological mechanisms of cardiac remodeling post-MI.
  • To review therapeutic strategies for mitigating cardiac remodeling and improving cardiac function.

Main Methods:

  • Literature review of pathophysiological mechanisms.
  • Analysis of current therapeutic strategies for MI and HF.

Main Results:

  • Cardiac remodeling involves changes in left ventricular geometry, dimension, and function post-MI.
  • Therapies focus on restoring coronary flow and counteracting neurohormonal activation.
  • Despite treatments, remodeling can progress to heart failure.

Conclusions:

  • Understanding cardiac remodeling mechanisms is crucial for developing effective treatments.
  • Therapeutic strategies aim to slow remodeling progression and enhance cardiac recovery.
  • Further research is needed to optimize interventions for post-MI patients.

Related Concept Videos

Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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...
31
Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
30
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
1.8K
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
43
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,...
20
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
25