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Brain natriuretic peptide and cardiac rupture after acute myocardial infarction
N Arakawa1, M Nakamura, H Endo
1Second Department of Internal Medicine, Iwate Medical University, Morioka.
Insights
Predicting cardiac rupture after myocardial infarction (MI) is crucial. Serial monitoring of plasma brain natriuretic peptide (BNP) levels may offer a predictive marker, even without clear symptoms.
Area of Science:
- Cardiology
- Biomarker Discovery
- Acute Myocardial Infarction
Background:
- Cardiac rupture is a life-threatening complication following acute myocardial infarction (MI).
- Currently, no established methods exist for predicting cardiac rupture in MI patients.
- Early identification of patients at risk is essential for timely intervention.
Observation:
- Three cases of myocardial infarction (MI) with subsequent cardiac rupture were analyzed.
- Plasma concentrations of brain natriuretic peptide (BNP) and atrial natriuretic peptide (ANP) were serially monitored.
- BNP levels progressively increased, peaking just before rupture, while ANP levels remained stable.
Findings:
- Elevated plasma brain natriuretic peptide (BNP) concentrations, independent of symptomatic or hemodynamic changes, were observed in patients who experienced cardiac rupture post-MI.
- The increase in BNP preceded the fatal event, suggesting a potential predictive role.
Implications:
- Increased plasma BNP may serve as a novel, early warning marker for cardiac rupture following acute myocardial infarction (MI).
- This finding could lead to improved patient monitoring and risk stratification strategies.
- Further research is warranted to validate BNP as a predictive biomarker for cardiac rupture.
Abstract:
Cardiac rupture is a fatal complication in the acute stage of myocardial infarction (MI). However, no measures have yet been established to predict it. Herein we describe three MI patients with cardiac rupture in whom plasma brain natriuretic peptide (BNP) and atrial natriuretic peptide (ANP) concentrations had been serially monitored from the onset of MI to cardiac rupture. In these cases, plasma BNP levels increased without symptomatic and hemodynamic changes and reached their highest level immediately before cardiac rupture, while plasma ANP levels remained unchanged. These cases suggest that the increased plasma BNP concentrations without symptomatic and hemodynamic changes may be a useful marker for predicting cardiac rupture after acute MI.