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The efficacy of brain natriuretic peptide levels in differentiating constrictive pericarditis from restrictive
Ferdinand S Leya1, Dinesh Arab, Dominique Joyal
1Division of Cardiology, Section of Interventional Cardiology, Loyola University Medical Center, Maywood, Illinois, USA. fleya@lumc.edu
Insights
Brain natriuretic peptide (BNP) levels can help distinguish constrictive pericarditis (CP) from restrictive cardiomyopathy (RCMP). BNP was significantly higher in restrictive cardiomyopathy patients, offering a potential noninvasive diagnostic marker.
Area of Science:
- Cardiology
- Biomarkers
- Diagnostic Tools
Background:
- Differentiating constrictive pericarditis (CP) from restrictive cardiomyopathy (RCMP) is clinically challenging.
- Hemodynamic assessment is often required for diagnosis.
- No established laboratory marker exists to differentiate CP from RCMP.
Purpose of the Study:
- To evaluate the utility of brain natriuretic peptide (BNP) measurements in distinguishing between CP and RCMP.
- To identify a potential noninvasive biomarker for differentiating these two cardiac conditions.
Main Methods:
- BNP levels were measured in 11 patients with suspected CP or RCMP.
- All patients underwent hemodynamic assessment concurrently with BNP measurements.
- Patients were categorized into CP or RCMP groups based on established hemodynamic criteria.
Main Results:
- Six patients were diagnosed with CP and five with RCMP.
- Both groups exhibited elevated intracardiac pressures.
- Plasma BNP levels were significantly higher in RCMP patients (825.8 pg/ml) compared to CP patients (128.0 pg/ml).
Conclusions:
- BNP levels are markedly elevated in restrictive cardiomyopathy compared to constrictive pericarditis.
- BNP shows promise as a valuable noninvasive marker for differentiating CP from RCMP.
Objectives:
We sought to determine the usefulness of brain natriuretic peptide (BNP) measurements to differentiate constrictive pericarditis (CP) from restrictive cardiomyopathy (RCMP).
Background:
The differentiation of CP from RCMP may be clinically difficult and often requires hemodynamic assessment. No laboratory marker has been shown to differentiate the two conditions.
Methods:
We measured BNP levels in 11 patients suspected of having either CP or RCMP. All patients had hemodynamic assessment the day of BNP measurements.
Results:
Six patients had CP and five patients had RCMP based on established hemodynamic criteria. Both CP and RCMP patients had similar elevation in intracardiac pressures. Despite similar pressures, the mean plasma BNP levels were significantly higher in RCMP compared to CP (825.8 +/- 172.2 pg/ml vs. 128.0 +/- 52.7 pg/ml, p < 0.001, respectively).
Conclusions:
The BNP levels are significantly elevated in RCMP compared to CP patients; BNP may prove to be a useful noninvasive marker for the differentiation of the two conditions.
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