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A Hydrogel Construct and Fibrin-based Glue Approach to Deliver Therapeutics in a Murine Myocardial Infarction Model.
Published on: June 14, 2015
[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.
Background:
The myocardial bridge constitutes one of the main differential diagnoses of coronary artery disease. However, it remains an underdiagnosed condition and its physiopathological mechanisms and therapeutics are yet to be elucidated.
Objective:
To analyze and describe the clinical and therapeutic evolution of patients with an angiographic diagnosis of myocardial bridge, comparing the data with that in the current literature, in order to clarify the patients' clinical profile and prognosis.
Methods:
The results of coronary angiographies carried out from 2003 to 2007 in a Laboratory of Hemodynamics were reviewed; the analysis of patients' files was carried out and selected patients were interviewed.
Results:
The frequency of myocardial bridge diagnosis was 3.6%. The mean age of patients was 56.8 years (SD = 11.83; CI = 0.73). The anterior descending artery was affected in isolation in 100% of the cases. After the selection, the analysis and interview of 31 patients were carried out. There was no correlation between symptoms and degree of angiographic narrowing observed in the studied patients. The drug treatment included the use of beta-blockers, calcium-channel antagonists, platelet antiaggregants and/or nitrates and resulted in clinical improvement in 30%, absence of alterations in the clinical picture in 60% and symptom worsening in 10% of the patients. One patient presented sudden death; two patients underwent angioplasty followed by significant clinical improvement and none of the patients underwent surgical procedures.
Conclusion:
Most of the patients with myocardial bridge have a good prognosis, but in the long term, there are not enough data, obtained from a large sample of symptomatic patients, to draw definitive conclusions.
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