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Acute myocardial infarction with a hemodynamic pattern resembling constrictive pericarditis
T Kubota1, T Imaizumi, A Chishaki
1Research Institute of Angiocardiology and Cardiovascular Clinic, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Insights
Acute myocardial infarction can mimic constrictive pericarditis hemodynamics. However, right atrial pacing and volume challenges did not reproduce this pattern in a chronic state, suggesting other factors are involved.
Area of Science:
- Cardiology
- Cardiac Physiology
Background:
- Acute myocardial infarction (AMI) can present with complex hemodynamic disturbances.
- Constrictive pericarditis is characterized by impaired diastolic filling due to pericardial restriction.
Observation:
- A 49-year-old woman with AMI exhibited a hemodynamic pattern similar to constrictive pericarditis.
- Diagnostic tests, including right atrial pacing and volume challenge, were performed during the chronic phase.
Findings:
- Both right atrial pacing and volume challenge increased diastolic ventricular pressures.
- The characteristic dip and plateau pattern of constrictive pericarditis was not observed during these interventions.
- Ischemia alone may not fully explain the constrictive pericarditis-like hemodynamics in AMI.
Implications:
- The findings suggest that factors beyond myocardial ischemia contribute to the development of constrictive pericarditis-like hemodynamics in acute myocardial infarction.
- Further research is needed to elucidate the precise mechanisms involved.
- This understanding can refine diagnostic approaches and management strategies for patients with complex cardiac presentations.
Abstract:
A 49-year-old woman experienced acute myocardial infarction with a hemodynamic pattern resembling constrictive pericarditis. To clarify its mechanism, we performed right atrial pacing and volume challenge test during the chronic state. Although these two interventions elevated diastolic pressures of the both ventricles, the dip and plateau pattern was not reproduced. Factors other than ischemia may be important in producing a hemodynamic pattern resembling constrictive pericarditis in acute myocardial infarction.