Factors other than ischemia, such as right ventricular distensibility and pericardial restraint, may be important in producing a hemodynamic pattern resembling constrictive pericarditis in acute myocardial infarction.
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Suggests pericardial restraint or RV distensibility may drive transient constrictive hemodynamics in acute MI; case report leaves open mechanistic confirmation.
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.
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Kubota et al. (1991) studied this question.
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