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Myocardial Infarction and Functional Outcome Assessment in Pigs
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Impaired microcirculation predicts poor outcome of patients with acute myocardial infarction complicated by
Corstiaan A den Uil1, Wim K Lagrand, Martin van der Ent
1Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Room V-017, s-Gravendijkwal 230, Rotterdam NL-3015 CE, The Netherlands. c.denuil@erasmusmc.nl
European Heart Journal
|September 11, 2010
Summary
Low sublingual perfused capillary density (PCD) in patients with acute myocardial infarction and cardiogenic shock predicts organ failure and mortality. Improving PCD during treatment indicates a better prognosis for these critically ill patients.
Area of Science:
- Cardiology
- Critical Care Medicine
- Microcirculation Research
Background:
- Cardiogenic shock following acute myocardial infarction (AMI) is associated with high mortality.
- Tissue perfusion, assessed by sublingual perfused capillary density (PCD), is a critical indicator of organ function and patient outcomes.
- Early identification of patients at risk for poor outcomes is essential for timely intervention.
Purpose of the Study:
- To investigate the relationship between sublingual perfused capillary density (PCD) and patient outcomes in cardiogenic shock secondary to AMI.
- To determine if baseline PCD predicts the development of organ failure and 30-day mortality.
- To assess the prognostic value of changes in PCD over time.
Main Methods:
- A prospective study was conducted on 68 patients with cardiogenic shock due to AMI.
- Sublingual PCD was measured at baseline (T0) and 24 hours (T1) using Sidestream Dark Field imaging.
- Sequential Organ Failure Assessment (SOFA) scores were calculated, and 30-day survival analyses were performed.
Main Results:
- Lower baseline PCD was associated with a greater increase in SOFA scores, indicating worsening organ dysfunction.
- Patients with higher baseline PCD (>10.3 mm mm⁻²) experienced more frequent recovery from organ failure (52% vs. 29%).
- A significantly lower 30-day mortality rate was observed in patients with higher baseline PCD (15% vs. 49%).
- Both cardiac power index and baseline PCD were independent predictors of 30-day mortality.
- Improvement in PCD from baseline to 24 hours correlated with a better prognosis.
Conclusions:
- Diminished sublingual PCD at baseline or after treatment is linked to multi-organ failure development.
- Sublingual PCD serves as a significant predictor of poor outcomes in AMI patients with cardiogenic shock.
- Monitoring sublingual PCD can aid in risk stratification and management of cardiogenic shock patients.
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