Myocardial scarring
Myocardial Scarring[edit]
Myocardial scarring refers to the formation of fibrous tissue in the myocardium, the muscular tissue of the heart. This condition is often the result of myocardial infarction, commonly known as a heart attack, where the blood supply to a part of the heart is interrupted, causing tissue death. The dead tissue is replaced by scar tissue, which can affect the heart's ability to pump effectively.
Pathophysiology[edit]
Myocardial scarring occurs when the heart muscle is damaged, typically due to ischemia, which is a lack of blood flow. When the heart muscle is deprived of oxygen, the affected cells die, and the body initiates a healing process. This process involves the formation of scar tissue, which is composed of collagen and other extracellular matrix components. Unlike healthy myocardial tissue, scar tissue does not contract, which can lead to decreased cardiac function and heart failure.
Causes[edit]
The primary cause of myocardial scarring is myocardial infarction. Other causes include:
- Myocarditis - inflammation of the heart muscle
- Cardiomyopathy - diseases of the heart muscle
- Cardiac surgery - surgical procedures on the heart
- Radiation therapy - treatment for cancer that affects the heart
Clinical Implications[edit]
Myocardial scarring can lead to several clinical complications, including:
- Heart failure - due to reduced pumping ability
- Arrhythmias - irregular heartbeats caused by disrupted electrical pathways
- Aneurysm formation - bulging of the heart wall
- Increased risk of sudden cardiac death
Diagnosis[edit]
Diagnosis of myocardial scarring is typically achieved through imaging techniques such as:
- Magnetic resonance imaging (MRI) - provides detailed images of the heart's structure
- Echocardiography - uses ultrasound to visualize heart function
- Computed tomography (CT) scan - offers cross-sectional images of the heart
Treatment[edit]
While scar tissue itself cannot be removed, treatment focuses on managing symptoms and preventing further damage. Treatment options include:
- Medications - such as beta-blockers and ACE inhibitors
- Implantable cardioverter-defibrillator (ICD) - to prevent sudden cardiac death
- Cardiac resynchronization therapy (CRT) - to improve heart function
- Lifestyle changes - such as diet and exercise modifications
Prevention[edit]
Preventing myocardial scarring involves reducing the risk of heart disease through:
Related Pages[edit]
Cardiovascular disease A-Z
Most common cardiac diseases
- Cardiac arrhythmia
- Cardiogenetic disorders
- Cardiomegaly
- Cardiomyopathy
- Cardiopulmonary resuscitation
- Chronic rheumatic heart diseases
- Congenital heart defects
- Heart neoplasia
- Ischemic heart diseases
- Pericardial disorders
- Syndromes affecting the heart
- Valvular heart disease
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
A[edit]
- Accelerated idioventricular rhythm
- Acute decompensated heart failure
- Arteriosclerotic heart disease
- Athletic heart syndrome
- Atrial flutter
- Atrioventricular fistula
- Cardiovascular disease in Australia
- Autoimmune heart disease
B[edit]
C[edit]
- Ebb Cade
- Cardiac allograft vasculopathy
- Cardiac amyloidosis
- Cardiac asthma
- Cardiac tamponade
- Cardiogenic shock
- Cardiogeriatrics
- Cardiorenal syndrome
- Cardiotoxicity
- Carditis
- Coronary artery aneurysm
- Coronary artery anomaly
- Coronary artery disease
- Spontaneous coronary artery dissection
- Coronary artery ectasia
- Coronary occlusion
- Coronary steal
- Coronary thrombosis
- Coronary vasospasm
- Cœur en sabot
- Coxsackievirus-induced cardiomyopathy
D[edit]
E[edit]
H[edit]
- Heart attack
- Heart failure
- Heart failure with preserved ejection fraction
- Heart to Heart (1949 film)
- High-output heart failure
- Hyperdynamic precordium
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
I[edit]
- Idiopathic giant-cell myocarditis
- Interventricular dyssynchrony
- Intraventricular dyssynchrony
- Isolated atrial amyloidosis
K[edit]
L[edit]
M[edit]
- Mydicar
- Myocardial bridge
- Myocardial disarray
- Myocardial rupture
- Myocardial scarring
- Myocardial stunning
- Myocarditis
N[edit]
O[edit]
P[edit]
- Papillary fibroelastoma
- Pathophysiology of heart failure
- Postpericardiotomy syndrome
- Pulmonary vein stenosis
R[edit]
S[edit]
- Saturated fat and cardiovascular disease
- SCAR-Fc
- Shone's syndrome
- Strain pattern
- Subacute bacterial endocarditis
- Sudden cardiac death of athletes
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
T[edit]
V[edit]
W[edit]
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