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[The prognostic value of continuously measured pulmonary artery pressure in recent myocardial infarct]
Insights
Elevated enddiastolic pulmonary artery pressure (PAEDP) in acute myocardial infarction patients predicts higher mortality. Early PAEDP levels effectively stratify risk and guide rehabilitation suitability.
Area of Science:
- Cardiology
- Critical Care Medicine
- Hemodynamics
Context:
- Acute transmural myocardial infarction presents significant mortality risks.
- Monitoring hemodynamic parameters is crucial for patient management.
- Enddiastolic pulmonary artery pressure (PAEDP) is a key indicator.
Purpose:
- To assess the prognostic value of PAEDP in acute myocardial infarction.
- To correlate PAEDP levels with short-term mortality.
- To evaluate PAEDP's role in long-term rehabilitation assessment.
Summary:
- 100 acute myocardial infarction patients were monitored for PAEDP. Patients were grouped by initial PAEDP: Group I (<12 mm Hg), Group II (12-20 mm Hg), and Group III (>20 mm Hg). Mortality rates were 4.9% (Group I), 16.3% (Group II), and 43.8% (Group III).
- Additional hemodynamic parameters improved acute-stage prognosis but not long-term fatal outcome prediction.
- Post-acute exercise stress tests with PAEDP evaluation indicated suitability for rehabilitation in Group I and 58% of Group II, with others showing poor tolerance.
Impact:
- PAEDP is a valuable, simple prognostic tool for acute myocardial infarction.
- Early PAEDP measurement aids in risk stratification and resource allocation.
- Findings guide rehabilitation strategies, identifying patients who may not benefit from standard exercise protocols.
Abstract:
Enddiastolic pulmonary artery pressure (PAEDP) was measured continuously in 100 patients with acute transmural myocardial infarction, beginning on admission to the CCU and lasting till the 3rd, 4th or 5th day. The PAEDPs of the first day were averaged and on this basis the patients were divided into three groups. Mortality in Group I (41 patients with PAEDP below 12 mm Hg) was 4.9%, in Group II (43 patients with PAEDP of 12-20 mm Hg) 16.3%, and in Group III (16 patients with PAEDP above 20 mm Hg) 43.8%. Use of additional hemodynamic parameters such as cardiac output, cardiac index, and cardiac work index increased prognostic precision for patients in the acute stage. However, they did not improve prognostic precision on fatal outcome in the post-acute stage. Bicycle exercise stress tests carried out several months later with simultaneous evaluation of hemodynamics (PAEDP) showed a good suitability for rehabilitation in Group I and in 58% of the patients in Group II. The other 42% had a significant rise in pulmonary artery pressure, could not undergo stress, and, in our view, are suitable for rehabilitation only in exceptional cases.