[Myocardial bridging: therapeutic and clinical development]

Aline Braz Pereira1, Danilo Spricigo Peressoni Castro, Emanuela Todeschini Menegotto

  • 1Hospital São José de Criciúma SC, Universidade do Extremo Sul Catarinense, Florianópolis, SC, Brasil. linibp@hotmail.com

Insights

Myocardial bridges, often underdiagnosed coronary artery anomalies, show a good prognosis for most patients. Further research is needed for long-term outcomes in symptomatic individuals.

Area of Science:

  • Cardiology
  • Vascular Medicine
  • Diagnostic Imaging

Background:

  • Myocardial bridge is a key differential diagnosis for coronary artery disease.
  • It is frequently underdiagnosed, with unclear pathophysiology and treatment strategies.
  • Understanding its clinical impact is crucial for patient management.

Purpose of the Study:

  • To analyze the clinical and therapeutic progression of patients diagnosed with myocardial bridge via angiography.
  • To compare findings with existing literature to clarify patient profiles and prognosis.
  • To investigate the relationship between symptoms and angiographic findings.

Main Methods:

  • Retrospective review of coronary angiographies (2003-2007).
  • Analysis of patient files and interviews with selected individuals.
  • Statistical analysis of demographic, clinical, and treatment data.

Main Results:

  • Myocardial bridge diagnosed in 3.6% of cases; anterior descending artery most affected.
  • No correlation found between symptoms and degree of angiographic narrowing.
  • 30% improved with medication; 60% remained stable; 10% worsened; one sudden death; two successful angioplasties.

Conclusions:

  • Most patients with myocardial bridge exhibit a favorable prognosis.
  • Long-term data from large symptomatic cohorts are insufficient for definitive conclusions.
  • Further investigation is warranted to fully elucidate long-term outcomes.
Abstract

Related Concept Videos

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,...
Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
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...
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
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...